IMPORTANT 1

INFORMATION

50332

GENERAL INFORMATION and

SPECIFICATIONS
Table of Contents
Page
Propeller Information . . . . . . . . . . . . . . . . . . . . . . 1-1
How to Use this Manual . . . . . . . . . . . . . . . . . . . . 1-1
General Specifications . . . . . . . . . . . . . . . . . . . . . 1-2
Propeller Selection . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Propeller Installation . . . . . . . . . . . . . . . . . . . . . . . 1-3
Trim “In” Angle Adjustment . . . . . . . . . . . . . . . . . 1-4
Power Trim System (Models with Power
Trim) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
General Information . . . . . . . . . . . . . . . . . . . . . 1-4
Checking Trim System Fluid Level . . . . . . . . 1-5
Trimming (Models with Power Trim) . . . . . . . . . . 1-5
Trimming Outboard “Out” (“Up”)
Characteristics . . . . . . . . . . . . . . . . . . . . . . . 1-5
Trimming Outboard “In” (’Down”)
Characteristics . . . . . . . . . . . . . . . . . . . . . . . 1-5
Trim Tab Adjustment . . . . . . . . . . . . . . . . . . . . . . . 1-6
Boat Performance . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Test Instructions . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Boat Test Chart (Example) . . . . . . . . . . . . . . . 1-7
Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Ride-Guide Steering Cable and Pivot
Points Lubrication . . . . . . . . . . . . . . . . . . . . 1-9
Gear Housing Lubrication . . . . . . . . . . . . . . . 1-10
Salt Water Corrosion - Gear Housing
Bearing Carrier and Cover Nut . . . . . . . . 1-10
Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . 1-11
Flushing Outboard Cooling System . . . . . . . . . 1-11
Following Complete Submersion . . . . . . . . . . . 1-12
Salt Water Submersion (Special
Instructions) . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Submerged While Running (Special
Instructions) . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Submerged Engine (Fresh Water) (Plus
Special Instructions) . . . . . . . . . . . . . . . . . 1-12
Out-of-Season Outboard Storage . . . . . . . . . . 1-13
Out-of-Season Battery Storage . . . . . . . . . . . . 1-13
How Weather Affects Engine
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Conditions Affecting Operation . . . . . . . . . . . . . 1-15
Detonation: Causes and Prevention . . . . . . . . 1-15
Compression Check . . . . . . . . . . . . . . . . . . . . . . 1-16
Painting Procedure . . . . . . . . . . . . . . . . . . . . . . . 1-17
Decal Application . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-0 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Propeller Information
For in-depth information on marine propellers and
boat performance - written by marine engineers - see
your Authorized Dealer for the illustrated “What You
Should Know About Quicksilver Propellers and Boat
Performance Information” (Part No. 90-86144).

How to Use this Manual

The manual is divided into SECTIONS (shown, right)
which represents major components and systems.
Some SECTIONS are further divided into PARTS.
Each PART has a title page. A “Table of Contents” for
the particular PART is printed on the back of the title
page.
SECTIONS and PARTS are listed on the “Service
Manual Outline” sheet which immediately follows the
cover of this book.

Section Section Heading

1 Important Information
2 Electrical and Ignition
3 Fuel System and Carburetion
4 Powerhead
5 Mid-Section
6 Lower Unit
7 Outboard Installation/Attachments
8 Oil Injection System

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-1

General Specifications
Model 40
Horsepower 40
Engine Type 4 Cylinder, In-Line, Two-Stroke
Full Throttle RPM Range 5000-5500
Idle RPM Range (in Forward Gear) 600-700
Piston Displacement 44 cu. in. (721cc)
Cylinder Bore Standard 2.565 in. (65.151mm)
Stroke 2.125 in. (53.975mm)
Ignition Type Thunderbolt Capacitor Discharge
Firing Order 1-3-2-4
Recommended Spark Plug NGK BUHW-2
Gear Selection Forward - Neutral - Reverse
Gear Ratio 2:1
Gear Housing Lubricant Capacity 12.5 fl. oz. (370ml)
Outboard Weight (ELPTO) 192 lbs. (87kg)
Carburetion 2 Carburetors, Center Bowl
Recommended Gasoline Any leaded or unleaded (lead-free) gasoline, with
a minimum posted octane rating of 86
(research octane number 90)
Remote Fuel Tank
Capacity:
- U.S. Gallons 6.6
- Imperial Gallons 5.5
- Liters 25
Recommended Oil Quicksilver 2-Cycle Outboard Oil
Gasoline/Oil Ratio 50:1
Oil Tank Capacity* 0.935 gal. (3.54 Liters)
Maximum Operation at Full Throttle* 7 Hours
Oil Remaining when Warning Buzzer Sounds* 7.5 fl. oz.
Approximate Running Time Remaining at Wide 30 Minutes
Open Throttle when Buzzer Sounds*
Recommended Battery Rating Minimum Reserve Capacity rating of 100 Minutes
and Cold Cranking Amperage of 350 Amperes
*Specification for Oil Injected Model

1-2 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Propeller Selection Coat the propeller shaft with Quicksilver Anti-Corro-
sion Grease or 2-4-C Marine Lubricant with Teflon.
1. Select a propeller that will allow the engine to op-
erate at or near the top of the recommended full IMPORTANT: To prevent the propeller hub from
throttle RPM range (listed in “Specifications,” corroding and seizing to the propeller shaft, es-
preceding) with a normal load. Maximum engine pecially in salt water, always apply a coat of the
speed (RPM) for propeller selection exists when recommended lubricant to the entire propeller
boat speed is maximum and trim is minimum for shaft at the recommended maintenance intervals
that speed. (High RPM, caused by an excessive and also each time the propeller is removed.
trim angle, should not be used in determining cor- Flo-Torq I Drive Hub Propellers
rect propeller.) Normally, there is a 150-350 RPM
change between propeller pitches. c b
2. If full throttle operation is below the recom-
mended range, the propeller MUST BE changed
to a lower pitch to prevent loss of performance
and possible engine damage.
3. For better acceleration, such as is needed in wa- a
ter skiing, propping up to 500 RPM above the rec-
ommended range is advised. Continuous opera-
a - Forward Thrust Hub
tion above the recommended maximum RPM, b - Propeller Nut Retainer
however, is not permissible. c - Propeller Nut
4. After initial propeller installation, the following Flo-Torq II Drive Hub Propellers
common conditions may require that the propel- c
ler be changed to a lower pitch: e d
a. Warmer weather and great humidity will
cause an RPM loss.
b. Operating in a higher elevation causes an
RPM loss.
c. Operating with a damaged propeller or a dirty b a
boat bottom or gear housing will cause an
RPM loss. a - Forward Thrust Hub
b - Replaceable Drive Sleeve
d. Operation with an increased load (additional c - Rear Thrust Hub
passengers, equipment, pulling skiers, etc.). d - Propeller Nut Retainer
e - Propeller Nut
1. Tighten propeller nut to 55 lb.ft. (75 N·m). Bend
Propeller Installation tabs against nut.

WARNING a

If the propeller shaft is rotated while the engine

is in gear, there is the possibility that the engine
b
b
will crank over and start. To prevent this type of
accidental engine starting and possible serious
injury caused from being struck by a rotating pro-
peller, always shift outboard to neutral position
and remove spark plug leads when you are serv- a - Propeller Nut - Torque To 55 lb. ft. (75 N·m)
b - Bend Tabs Against Nut
icing the propeller.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-3

Trim “In” Angle Adjustment Power Trim System (Models
WARNING with Power Trim)
Operating some boats with outboard trimmed to General Information
the full “in” trim angle [not using trim adjustment
bolt (a)] at planing speed will cause undesirable The power trim system is filled at the manufacturer
and/or unsafe steering conditions. Each boat and is ready for use.
must be water tested for handling characteristics Trim outboard through entire trailering range several
after outboard installation and after any trim ad- times to remove any air from the system.
justments.
The trim system is pressurized and is not externally
IMPORTANT: Some boat/outboard combina- vented.
tions, that do not use the trim adjustment pin (a)
and are trimmed to the full “in” trim angle, will not The outboard can be raised or lowered manually by
experience any undesirable and/or unsafe steer- loosening the manual release valve 2 to 3 turns coun-
ing conditions during planing speed. Thus, not terclockwise.
using trim adjustment pin may be desired. How- The trim “out” angle of this outboard is not adjustable.
ever, some boats with outboard trimmed to the The trim system has an internal valve which will auto-
full “In” trim angle at planing speeds will cause matically stop the outward trim travel at 200 when en-
undesirable and/or unsafe steering conditions. If gine RPM is approximately 2000 RPM or higher; out-
these steering conditions are experienced, un- board also has to be in water and in gear.
der no circumstances should the outboard be
The outboard can be operated beyond the 200 trim
operated without the trim adjustment pin and
limit for operating outboard in shallow water if engine
without the pin adjusted in the proper holes to
RPM is kept below approximately 2000 RPM.
prevent unsafe handling characteristics.
Water test the boat not using the trim adjustment pin.
If undesirable and/or unsafe steering conditions are
experienced (boat runs with nose down), install trim
adjustment pin in proper hole to prevent unsafe han-
dling characteristics.

50158

50157 50146
a - Fill Screw (System is Pressurized, DO NOT Open Unless
Outboard is Tilted to Full Up Position)
b - Manual Tilt Release Valve Location

1-4 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Checking Trim System Fluid Level Trimming (Models with
IMPORTANT: This trim system is pressurized. Power Trim)
Remove fill screw when outboard is trimmed to
the full “up” position. Retighten fill screw secure- NOTE: Because varying hull designs react differently
ly. in various degrees of rough water, it is recommended
to experiment with trim positions to determine wheth-
1. Trim outboard to full “up” position. Engage tilt lock er trimming up or down will improve the ride in rough
level (a). Trim system fluid can only be checked water.
when outboard is in this position.
When trimming your outboard from a mid-trim posi-
tion (trim tab in neutral straight fore-and-aft position),
you can expect the following results:

Trimming Outboard “Out” (“Up”)

Characteristics

WARNING
Excessive trim “out” also may reduce the stabil-
ity of some high speed hulls. To correct instabili-
ty at high speed, reduce the power GRADUALLY
and trim the outboard “In” slightly before resum-
ing high speed operation. (Rapid reduction in
power will cause a sudden change of steering
torque and may cause additional momentary
50157 boat instability.)
2. Remove fill screw and check fluid level. Fluid lev- 1. Will lift bow of boat, generally increasing top
el should be to bottom of threads in fill hole (b). speed.
3. If necessary, add Quicksilver Power Trim & 2. Transfers steering torque harder to left on stan-
Steering Fluid or; Automatic Transmission Fluid dard or slightly elevated transom installation
(ATF) Type F, FA or Dexron 11 fluid to trim (single outboard).
system. 3. Increases clearance over submerged objects.
4. Reinstall fill screw. 4. In excess, can cause porpoising and/or ventila-
tion.
5. If trimmed out beyond the water pickup, reduced
water supply can cause serious overheating.

b Trimming Outboard “In” (“Down”)

Characteristics

WARNING
Excessive speed at minimum trim “in” may
cause undesirable and/or unsafe steering condi-
tions. Each boat should be tested for handling
characteristics after any adjustment is made to
the trim angle (trim adjustment pin relocation).
1. Will help planing off, particularly with a heavy
load.
2. Usually improves ride in choppy water.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-5

3. In excess, can cause boat to veer to the left or Boat Performance
right (bow steer).
4. Transfers steering torque harder to right (or less Test Instructions
to the left) on single outboard installations.
5. Improves planing speed acceleration. WARNING
A tight grip on the steering wheel/tiller handle is
always advisable and is required when accelerat-
ing, decelerating or when trimming the boat. On
Trim Tab Adjustment models with Power Trim, upon reaching cruising
1. Check trim tab position as follows: speed, the outboard should be trimmed to obtain
a. Operate boat at the speed at which it would a balanced steering condition. While trimming,
normally be operated. steering loads will vary and will pull in one direc-
tion until a balanced condition has been attained.
b. If the boat pulls to the right (starboard), the If the outboard is trimmed past the balanced
trailing edge of trim tab must be moved to the steering condition, the steering wheel/tiller han-
right. If the boat pulls to the left (port), the trail- dle then will have a tendency to pull in the oppo-
ing edge of trim tab must be moved to the left. site direction. Excessive trimming past the bal-
2. If necessary, adjust trim tab as follows: anced steering position will result in increased
steering loads and, in most boat applications, a
a. Shift outboard control into neutral and turn decrease in performance.
ignition key to “Off” position.
b. Remove plug from rear of drive shaft housing CAUTION
and loosen bolt and trim tab. When trimming boat with dual outboards, both
c. If boat pulls to the left, adjust trailing edge of outboards should be at approximately the same
trim tab to the left. If boat pulls to the right, ad- tilt angle and be tilted out (up) simultaneously (to
just trailing edge of trim tab to the right. prevent boat from pitching side-to-side) until de-
sired boat attitude is achieved. Outboards can
d. Tighten trim tab bolt securely and replace
then be trimmed individually to precisely adjust
plug.
boat trim angle and pitch.
e. Operate boat per “Check trim tab position as
1. With boat in water, trim the outboard(s) (trim but-
follows,” preceding, to check trim tab setting.
ton in remote control handle) so that the decal on
If necessary, readjust trim tab.
the side of cowl is horizontal. This is a typical av-
erage setting that should give reasonable accel-
eration and top speed.
2. Go for a short familiarization ride at various
throttle and trim settings BEFORE starting test-
ing.
NOTE: Instruments should be read with eye directly
in front to eliminate any error in reading the instru-
ments.
3. When making either top speed or acceleration
runs, best accuracy will be obtained by running
with or against any wind. Side winds require driv-
ing in a constant turn to keep the boat moving
straight ahead. If winds are 10 MPH (16 km/hr) or
22750 greater, it is suggested that all acceleration runs
be made downwind.
a - Anti-Ventilation Plate
b - Adjustable Trim Tab
c - Plug

1-6 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

4. The top speed WOT (wide-open-throttle) test 6. Prop “break loose” (sudden higher RPM), if not
should be done with the boat normally loaded (to excessive, in some cases can be beneficial dur-
duplicate actual running conditions). Operate ing acceleration. If undesirable “break loose” oc-
boat in gear at WOT and check RPM. Engine curs, it can be decreased by trimming the out-
RPM must be within the recommended full board further under. If it remains excessive with
throttle RPM range (listed in the Operation and all similar propellers, the outboard must be low-
Maintenance Manual). ered.
NOTE: When performing an acceleration test, it is 7. It is suggested that all applicable data be re-
recommended that a stop watch be used to improve corded on a chart (such as that illustrated, follow-
testing accuracy. A wrist watch with a second hand ing) and retained for future reference.
may also be substituted.
8. After several propellers of different pitch and/or
5. An acceleration test can also be performed if de- design have been tried, select one that best
sired. Start the test with boat motionless in the serves the general purpose of the boat. The se-
water and outboard in neutral. A stop watch lected propeller should enable the engine to op-
should be started as the throttle is quickly pushed erate within its recommended full throttle RPM
to WOT (wide-open-throttle). Stop the watch as range, without excessive propeller “break loose”
the speedometer needle sweeps past 20 MPH during acceleration or turns. A second propeller
(32 km/hr). Several runs should be made to as- that would make both a suitable spare or a spe-
sure a good average. cial purpose alternate might also be desirable.
NOTE: A higher pitch often gives best top speed, but
the next lower pitch gives adequate top speed with
much better acceleration.

Boat Test Chart (Example)

* WOT is wide-open-throttle

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-7

Lubrication Points
Item Fresh Water Salt Water
Description Type of Lubricant
No. Frequency Frequency
Throttle/Shift
1 Linkage Pivot
Points
2 Upper Shift Shaft Quic sil er
Quicksilver
3 Tilt Lock Lever 2-4-C E ery
Every E ery
Every
M ri e
Marine 60 Days
ys 30 Days
ys
4 Swivel Pin Lubricant
Ride Guide
5
Steering Cable
6 Tilt Tube
Steering Link SAE 30W Every Every
7
Rod Pivot Points Motor Oil 60 Days 30 Days
Quicksilver
- Special Lubricant
101 50195
Once in Every
8 Propeller Shaft - Anti-Corrosion Season 60 Days 1 - Throttle/Shift Linage Pivot Pint Lubrication
Grease
- 2-4-C Marine
Lubricant
Starter Motor SAE 10W Once in Every
9
Pinion Gear Motor Oil Season 60 Days
Quicksilver
Gear Housing - Special Lubricant After first 20

Bearing Carrier 101 hours, then
and Cover Nut - 2-4-C Marine once in season
Lubricant
Check and fill Check and fill
after first 10 after first 10
days, then days, then
every 30 days every 30 days

Quicksilver
Quic sil er Drain and refill Drain and refill
 Gear
e r Housing
ousi after 1st 25 after 1st 25
Gear Lube
hours, then hours, then
after every 100 after every 100
hours, or once hours, or once
a year before a year before
storing storing 54634

Engine Quicksilver 2 - Upper Shift Shaft Lubrication

Crankshaft 2-4-C Once in Once in

Splines to Drive Marine Season Season
Shaft Splines Lubricant

Refer to lubrication instructions outlined in “Salt Water Corrosion - Gear

Housing Bearing Carrier and Cover Nut” of this section (see “Table of
Contents”).
 Refer to “Gear Housing Lubrication” of this section (see “Table of Con-
tents”).
 Refer to “Gear Housing Removal and Installation” (Section 5).

1-8 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

 8

26474

8 - Propeller Shaft Lubrication

50157
3 - Tilt Lock Lever Grease Fitting
4 - Swivel Pin Grease Fittings
9

Ride-Guide Steering Cable and Pivot

Points Lubrication

WARNING
Core of steering cable (transom end) must be ful-
ly retracted into cable housing before lubricating
cable. If cable is lubricated while extended, hy-
draulic lock of cable could occur.
With core of Ride-Guide Steering cable (transom
end) fully retracted, lubricate transom end of steering 12579
cable thru grease fitting and exposed portion of cable 9 - Starter Motor Pinion Gear Lubrication
end with Quicksilver 2-4-C Marine Lubricant. Lubri-
cate all pivot points with SAE 30W engine
oil.

5 7

6 50334
5 - Ride-Guide Steering Grease Fitting
6 - Tilt Tube Grease Fitting
7 - Steering Link Rod Pivot Point Lubrication

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-9

Gear Housing Lubrication 5. Note color of gear lubricant. White or cream color
indicates presence of water in lubricant. Gear lu-
NOTE: Refer to “Specifications,” for gear housing lu- bricant which has been drained from a gearcase
bricant capacity. recently in operation will have a yellowish color
due to lubricant agitation/aeration. This is normal
WARNING and should not be confused with the presence of
If gear housing is installed on outboard, to avoid water.
accidental starting, disconnect (and isolate) 6. Presence of water in gear lubricant indicates the
spark plug leads from spark plugs before work- need for disassembly and inspection of oil seals,
ing near the propeller. seal surfaces, O-rings, water pump gaskets as
well as gear housing components for damage.
CAUTION IMPORTANT: Never add lubricant to gear hous-
Do not use automotive grease in the gear hous- ing without first removing VENT plug, as trapped
ing. Use only Quicksilver Gear Lube or Quicksil- air will prevent housing from being filled. Fill gear
ver Super-Duty Lower Unit Lubricant. housing only when outboard is in operating posi-
1. Tilt outboard so that lubricant in gear housing will tion.
drain toward front of housing, out fill hole and into 7. With outboard in operating position, insert lubri-
clean container. cant tube into fill hole.
IMPORTANT: Inspect fill and VENT plug washers 8. Fill gear housing with lubricant, until excess
for damage. Use new washer as needed. starts to flow from VENT hole.
2. Remove lubricant fill plug and washer. Note 9. At this point, drain approximately one fluid ounce
amount of metal particles on magnetic fill plug. (30ml) from gear housing to permit expansion of
3. Remove VENT plug with washer and allow suffi- lubricant.
cient time for all lubricant to drain. 10. Install VENT plug and washer.
11. Remove lubricant tube and install cleaned mag-
netic fill plug with washer.

Salt Water Corrosion - Gear Housing

Bearing Carrier and Cover Nut
a
Salt water corrosion buildup can be sufficient to split
a gear housing and destroy an entire lower unit. To
protect against such damage, therefore, it is recom-
mended that the gear housing bearing carrier and
b gear housing cover nut be lubricated on a regular ba-
sis, as follows:
Service first at the 20-hour inspection, then on an
annual basis. Remove the cover nut and entire
bearing carrier to adequately clean corrosive de-
posits and dried-up lubricant from both ends of the
a - Lubricant VENT Plug bearing carrier, as well as the gear housing internal
b - Lubricant Fill Plug/Washer threads and cover nut external threads. Apply a lib-
4. Inspect gear lubricant for metal particles (lubri- eral amount of Quicksilver Special Lubricant 101;
cant will have a “metal flake” appearance). Pres- or 2-4-C Marine Lubricant to the 2 ends of the bear-
ence of fine metal particles (resembling powder) ing carrier and to the gear housing and cover nut
on the drain plug bar magnet indicates normal threads, then reassemble and retorque. Refer to
wear. The presence of metal chips on the drain gear housing disassembly and reassembly (Sec-
plug bar magnet indicates the need for gear tion 5).
housing disassembly and components inspec-
tion.

1-10 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Periodic Inspection Flushing Outboard Cooling
Conduct a periodic, systematic inspection to uncover System
and correct a failure before it can cause inconve-
nience or mechanical damage. Inspection interval is WARNING
based on average operating conditions in utility ser-
vice. Under severe conditions, the inspection interval When flushing, be certain that area in vicinity of
should be shortened. Inspection includes: propeller is clear and that no person is standing
nearby - to avoid possible injury. It is recom-
1. Clean entire unit thoroughly, including all acces- mended to remove propeller as a precautionary
sible powerhead parts. measure.
2. Check entire unit for loose, damaged or missing 1. Install Quicksilver Flushing Attachment
parts. Tighten or replace as required. (44357A2) [or equivalent tool] on the gear hous-
3. Lubricate gear housing as instructed previously. ing from the FRONT side, positioning the rubber
cups over the water intake openings.
4. Lubricate other points as indicated, previously.
5. Lubricate starter motor shaft with light film of SAE Typical Gear Housing
1OW motor oil. Do not over-lubricate.
6. Service spark plugs. Inspect spark plug leads
and electrical leads for damage or deterioration,
as explained in Section 2 “Electrical and Ignition”
section.
7. Inspect fuel lines for damage or deterioration and
service fuel filters as indicated in Section 3 “Fuel b
System and Carburetion.”
8. Remove propeller and inspect. Trim nicks and
burrs with a file, being careful not to remove more
metal than absolutely necessary. Inspect for
cracks, damage or bent condition. If condition is a
doubtful, refer to authorized Quicksilver Propeller
Repair Station facilities. Before reinstalling pro-
peller, coat propeller shaft with Quicksilver Spe-
cial Lubricant 101, Anti-Corrosion Grease or
2-4-C Marine Lubricant. a - Water Hose (1/2 in. [13mm] I.D. or Larger)
b - Flushing Attachment (44357A2)
9. Inspect the outboard surface finish for damage or 2. Connect hose (1/2 in. [13mm] I.D. or larger) be-
corrosion. Thoroughly clean damaged or cor- tween flushing attachment and water tap.
roded areas and apply matching paint (Quicksil-
ver Spray Paints). IMPORTANT: To prevent water pump damage, do
not start or run engine unless cooling water is
10. Check trim tab and galvanic corrosion inhibitor flowing.
for damage or for deterioration from salt water
operation. 3. With the outboard in normal operating position
(vertical), partially open water tap (IT IS NOT
11. Check remote controls and steering. Be sure that NECESSARY to use full water pressure) and ad-
all connections and fittings are in good condition, just water flow so that there is a significant water
properly secured and correctly adjusted. loss around the rubber cups.
4. Start engine and idle in neutral. Then increase
engine speed, not to exceed 2500 RPM.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-11

5. Flush or service engine as required. Be sure ade- Submerged Engine (Fresh Water)
quate cooling water is provided.
(Plus Special Instructions)
a. Water must be discharged thru “tell-tale.”
1. Recover engine as quickly as possible.
IMPORTANT: Prevent engine overheating. If wa-
ter flow is insufficient, stop engine and deter- 2. Remove cowling.
mine cause before continuing. 3. Flush exterior of outboard with fresh water to re-
b. Flush until discharged water is clear. In salt- move mud, weeds, etc. DO NOT attempt to start
water areas, run outboard 3 to 5 minutes. engine if sand has entered powerhead, as power
head will be severely damaged. Disassemble
c. Stop engine before turning off water. powerhead if necessary to clean components.
6. Stop engine, turn water off and remove flushing 4. Remove spark plugs and get as much water as
attachment from gear housing. possible out of powerhead. Most water can be
IMPORTANT: While and after flushing, keep out- eliminated by placing engine in a horizontal posi-
board in upright position until all water has tion (with spark plug holes down) and rotating fly-
drained from drive shaft housing to prevent wa- wheel.
ter from entering the powerhead via drive shaft 5. Pour alcohol into carburetor throat (alcohol will
housing and exhaust ports. absorb water). Again rotate flywheel.
6. Turn engine over and pour alcohol into spark plug
openings and again rotate flywheel.
Following Complete 7. Turn engine over (place spark plug opening
Submersion down) and pour engine oil into throat of carbure-
tors while rotating flywheel to distribute oil
Submerged engine treatment is divided into 3 distinct throughout crankcase.
problem areas. The most critical is submersion in salt
water; the second is submersion while running. 8. Again turn engine over and pour approximately
one teaspoon of engine oil into each spark plug
opening. Again rotate flywheel to distribute oil in
Salt Water Submersion (Special cylinders.
Instructions) 9. Remove and clean carburetors and fuel pump
assembly.
Due to the corrosive effect of salt water on internal
engine components, complete disassembly is nec- 10. Reinstall spark plugs, carburetors and fuel pump.
essary before any attempt is made to start the en- 11. Attempt to start engine, using a fresh fuel source.
gine. If engine starts, it should be run for at least one
hour to eliminate any water in engine.
12. If engine fails to start, determine cause (fuel,
Submerged While Running (Special electrical or mechanical). Engine should be run
Instructions) within 2 hours after recovery of outboard from
When an engine is submerged while running, the water, as serious internal damage may occur. If
possibility of internal engine damage is greatly in- unable to start engine in this period, disassemble
creased. If, after engine is recovered and with spark engine and clean all parts and apply oil as soon
plugs removed, engine fails to turn over freely when as possible.
turning flywheel, the possibility of internal damage
(bent connecting rod and/or bent crankshaft) exists.
If this is the case, the powerhead must be disas-
sembled.

1-12 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Out-of-Season Outboard 10. If the water pickup is clogged, the speedometer
will be inoperative. Clean the pickup with a piece
Storage of wire or blow out with compressed air. Before
blowing out with air, disconnect the tubing from
WARNING the speedometer.
As a safety precaution, when boat is in storage, 11. To prevent freeze damage, drain the speedome-
remove positive (+) battery cable. This will elimi- ter system of water completely before storage.
nate possibility of accidental starting of engine Remove tubing from speedometer fitting and
and resultant overheating and damage to engine blow thru the tubing to remove water.
from lack of water. 12. Store battery as outlined in “Out-of-Season Bat-
In preparing an outboard for out-of-season storage, tery Storage,” following.
2 precautions must be considered: 1) The engine 13. For out-of-season storage information on Auto-
must be protected from physical damage and 2) the Blend units, refer to Section 8 in this service
engine must be protected from rust, corrosion and manual.
dirt.
IMPORTANT: When storing outboard for the win-
1. Remove cowling from engine. ter, be sure that all water drain holes in gear hous-
2. Place outboard in water or install Quicksilver ing are open and free so that all water will drain
Flushing Attachment over water intake by follow- out. If a speedometer is installed in the boat, dis-
ing instructions outlined in “Flushing Outboard” connect the pickup tube and allow it to drain. Re-
(see “Table of Contents”). connect the tube after draining. Trapped water
may freeze and expand, thus cracking gear hous-
3. Start engine and allow to warm up. Disconnect ing and/or water pump housing. Check and refill
fuel line and allow engine to run at low RPM while gear housing with Quicksilver Gear Lube before
inducing approximately 2 oz. (57 g) of Quicksilver storage to protect against possible water leak-
Storage Seal into each carburetor throat. Allow age into gear housing which is caused by loose
engine to stall out, indicating that carburetors lubricant vent plug or loose grease fill plug. In-
have run dry. spect gaskets under lubricant vent and fill plugs,
4. Remove spark plugs from engine and spray replacing any damaged gaskets, before reinstal-
approximately one ounce (30ml) of Quicksilver ling plugs.
Storage Seal into each spark plug hole. Manually
turn engine over several times to distribute Stor-
age Seal throughout cylinders. Reinstall spark
plugs. Out-of-Season Battery
5. If engine fuel filter appears to be contaminated, Storage
remove and replace. Refer to Section 3 “Fuel 1. Remove battery as soon as possible and remove
System and Carburetion.” all grease, sulfate and dirt from top surface.
6. Drain and refill lower unit with Quicksilver Gear 2. Cover plates with distilled water, but not over
Lube, as explained in “Gear Housing Lubrication” 3/16in. (5mm) above perforated baffles.
(see “Table of Contents”).
3. Cover terminal bolts well with grease.
7. Clean outboard thoroughly, including all accessi-
ble powerhead parts, and spray with Corrosion 4. Store battery in a COOL, DRY place in a dry car-
and Rust Preventive. ton or box.

8. Refer to lubrication chart in this section (see 5. Remove battery from storage every 60 days.
“Table of Contents”) and lubricate all lubrication Check water level and place on charge for 5 to 6
points. hours at 6 amperes. DO NOT fast charge.

9. Remove propeller. Apply Special Lubricant 101, CAUTION

Anti-Corrosion Grease or 2-4-C Marine Lubricant
to propeller shaft and reinstall propeller. Refer to A discharged battery can be damaged by freez-
“Propeller Installation” (see “Table of Contents”). ing.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-13

How Weather Affects Engine In pointing out the practical consequences of weath-
er effects, an engine--running on a hot, humid sum-
Performance mer day--may encounter a loss of as much as 14%
of the horsepower it would produce on a dry, brisk
spring or fall day. The horsepower, that any internal
combustion engine produces, depends upon the
density of the air that it consumes and, in turn, this
density is dependent upon the temperature of the air,
its barometric pressure and water vapor (or humidity)
content.
Accompanying this weather-inspired loss of power is
a second but more subtle loss. At rigging time in early
spring, the engine was equipped with a propeller that
allowed the engine to turn within its recommended
RPM range at full throttle. With the coming of the
summer weather and the consequent drop in avail-
able horsepower, this propeller will, in effect, become
too large. Consequently, the engine operates at less
than its recommended RPM.
Due to the horsepower/RPM characteristics of an en-
gine, this will result in further loss of horsepower at
the propeller with another decrease in boat speed.
This secondary loss, however, can be regained by
switching to a smaller pitch propeller that allows the
engine to again run at recommended RPM.
It is a known fact that weather conditions exert a pro- For boaters to realize optimum engine performance
found effect on power output of internal combustion under changing weather conditions, it is essential
engines. Therefore, established horsepower ratings that the engine be propped to allow it to operate at or
refer to the power that the engine will produce at its near the top end of the recommended maximum
rated RPM under a specific combination of weather RPM range at wide-open-throttle with a normal boat
conditions. load.
Corporations internationally have settled on adop- Not only does this allow the engine to develop full
tion of I.S.O. (International Standards Organization) power, but equally important is the fact that the en-
engine test standards, as set forth in I.S.O. 3046 gine also will be operating in an RPM range that dis-
standardizing the computation of horsepower from courages damaging detonation. This, of course, en-
data obtained on the dynamometer, correcting all val- hances overall reliability and durability of the engine.
ues to the power that the engine will produce at sea
level, at 30% relative humidity at 77
F (25
C) tem-
perature and a barometric pressure of 29.61 inches
of mercury.
Summer Conditions of high temperature, low baro-
metric pressure and high humidity all combine to re-
duce the engine power. This, in turn, is reflected in
decreased boat speeds--as much as 2 or 3 miles-
per-hour in some cases. (Refer to previous chart.)
Nothing will regain this speed for the boater, but the
coming of cool, dry weather.

1-14 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Conditions Affecting Detonation: Causes and
Operation Prevention
1. Proper positioning of the weight inside the boat Detonation in a 2-cycle engine somewhat resembles
(persons and gear) has a significant effect on the the “pinging” heard in an automobile engine. It can be
boat’s performance, for example: otherwise described as a tin-like “rattling” or “plank-
ing” sound.
a. Shifting weight to the rear (stern)
Detonation generally is thought of as spontaneous
(1.) Generally increases top speed.
ignition, but it is best described as a noisy explosion
(2.) If in excess, can cause the boat to por- in an unburned portion of the fuel/air charge after the
poise. spark plug has fired. Detonation creates severe, un-
(3.) Can make the bow bounce excessively in timely shock waves in the engine, and these shock
choppy water. waves often find or create a weakness: The dome of
a piston, piston rings or piston ring lands, piston pin
(4.) Will increase the danger of the following- and roller bearings.
wave splashing into the boat when com-
ing off plane. While there are many causes for detonation in a
2-cycle engine, emphasis is placed on those causes
b. Shifting weight to the front (bow) which are most common in marine 2-cycle applica-
(1.) Improves ease of planing off. tion. A few, which are not commonly understood, are:
(2.) Generally improves rough water ride. 1. Over-advanced ignition timing.
(3.) If excessive, can make the boat veer 2. Use of low octane gasoline.
back-and-forth (bow steer). 3. Propeller pitch too high (engine RPM below rec-
2. Boat Bottom: For maximum speed, a boat bot- ommended maximum range).
tom should be nearly a flat plane where it con- 4. Lean fuel mixture at or near wide-open-throttle.
tacts the water and particularly straight and
smooth in fore-and-aft direction. 5. Spark plugs (heat range too hot - incorrect reach
- cross-firing).
a. Hook: Exists when bottom is concave in fore-
and-aft direction when viewed from the side. 6. Inadequate engine cooling (deteriorated cooling
When boat is planing, “hook” causes more lift system).
on bottom near transom and allows bow to 7. Combustion chamber/piston deposits (result in
drop, thus greatly increasing wetted surface higher compression ratio).
and reducing boat speed. “Hook” frequently
is caused by supporting boat too far ahead of
transom while hauling on a trailer or during
storage.
b. Rocker: The reverse of hook and much less
common. “Rocker” exists if bottom is convex
in fore-and-aft direction when viewed from
the side, and boat has strong tendency to por-
poise.
c. Surface Roughness: Moss, barnacles, etc.,
on boat or corrosion of outboard’s gear hous-
ing increase skin friction and cause speed
loss. Clean surfaces when necessary.
3. Gear Housing: If unit is left in the water, marine
vegetation may accumulate over a period of time
in certain types of water. This growth must be re-
moved from unit before operation, as it may clog
the water inlet holes in the gear housing and
cause the engine to overheat.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-15

Detonation usually can be prevented, provided that 6. Compression check is important because an en-
1) the engine is correctly set up and 2) diligent main- gine with low or uneven compression cannot be
tenance is applied to combat the detonation causes, tuned successfully to give peak performance. It
listed, preceding. is essential, therefore, that improper compres-
sion be corrected before proceeding with an en-
gine tuneup.
7. Cylinder scoring: If powerhead shows any indica-
tion of overheating, such as discolored or
scorched paint, remove transfer port cover and
visually inspect cylinders for scoring or other
damage as outlined in Section 4 “Power Head.”

54635

Damaged Piston Resulting From Detonation

a
Compression Check
1. Remove spark plugs.
54636
2. Install compression gauge in spark plug hole.
a - Compression Gauge (P/N 91-29287)
3. Hold throttle plates at W.O.T.
4. Crank engine thru at least 4 compression strokes
to obtain highest possible reading.
5. Check and record compression of each cylinder.
Variation of more than 15 lbs. per sq. in. (103.5
kPa) between cylinders indicates that lower com-
pression cylinder is in some way defective, such
as worn or sticking piston rings and/or scored pis-
ton and cylinder.

1-16 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996

Painting Procedures 3. Sand blistered area with 3M 180 grit sandpaper
or P180 Gold Film Disc to remove paint blisters
only. Feather edge all broken paint edges.
Cleaning & Painting Aluminum 4. Clean gear housing thoroughly with (DX-330)
Propellers & Gear Housings wax and grease remover.
5. Spot repair surfaces where bare metal is ex-
WARNING posed with (DX-503) alodine treatment.
Avoid serious injury from flying debris. Avoid se- IMPORTANT: Do not use any type of aerosol
rious injury from airborne particles. Use eye and spray paints as the paint will not properly adhere
breathing protection with proper ventilation. to the surface nor will the coating be sufficiently
thick to resist future paint blistering.
PROPELLERS
6. Mix epoxy chromate primer (DP-40) with equal
1. Sand the entire area to be painted with 3M 120 part catalyst (DP-401) per manufacturers
Regalite Polycut or coarse Scotch-Brite, disc or instructions, allowing proper induction period for
belts. permeation of the epoxy primer and catalyst.
2. Feather edges of all broken paint edges. Try not 7. Allow a minimum of one hour drying time and no
to sand through the primer. more than one week before top coating assem-
blies.
3. Clean the surface to be painted using PPG
Industries DX330 Wax and Grease Remover or 8. Use Ditzler Urethane DU9000 for Mercury Black,
equivalent (Xylene or M.E.K.). DU34334 for Mariner Grey, and DU35466 for
Force Charcoal, and DU33414M for Sea Ray
4. If bare metal has been exposed, use Quicksil-
White. Catalyze all three colors with Ditzler DU5
ver’s Light Gray Primer.
catalyst mixed 1:1 ratio. Reduce with solvents
5. Allow a minimum of 1 hour dry time and no more per Ditzler label.
than 1 week before applying the finish coat.
6. Apply the finish coat using Quicksilver’s EDP
CAUTION
Propeller Black. Be sure to comply with instructions on the label
for ventilation and respirators. Using a spray
GEAR HOUSINGS gun, apply one half to one mil even film thick-
ness. Let dry, flash off for five minutes and apply
The following procedures should be used in refinish- another even coat of one half to one mil film thick-
ing gear housings. This procedure will provide the ness. This urethane paint will dry to the touch in
most durable paint system available in the field. The a matter of hours, but will remain sensitive to
materials recommended are of high quality and scratches and abrasions for a few days.
approximate marine requirements. The following
procedure will provide a repaint job that compares 9. The type of spray gun used will determine the
with a properly applied factory paint finish. It is rec- proper reduction ratio of the paint.
ommended that the listed materials be purchased IMPORTANT: Do not paint sacrificial zinc trim tab
from a local Ditzler Automotive Finish Supply Outlet. or zinc anode.
The minimum package quantity of each material
shown following is sufficient to refinish several gear 10. Cut out a cardboard “plug” for trim tab pocket to
housings. keep paint off of mating surface to maintain good
continuity circuitry between trim tab and gear
Procedure: housing.

1. Wash gear housing with a muriatic acid base

cleaner to remove any type of marine growth,
and rinse with water, if necessary.
2. Wash gear housing with soap and water, then
rinse.

90-814676R1 DECEMBER 1996 IMPORTANT INFORMATION - 1-17

Decal Application DECAL APPLICATION
1. Mix 1/2 ounce (16 ml) of dish washing liquid in one
gallon (4 l) of cool water to use as wetting solu-
Decal Removal tion.
1. Mark decal location before removal to assure NOTE: Leave protective masking, if present, on the
proper alignment of new decal. face of decal until final steps of decal installation. This
will ensure that the vinyl decal keeps it’s shape during
2. Carefully soften decal and decal adhesive with a installation.
heat gun or heat blower while removing old decal.
2. Place the decal face down on a clean work sur-
3. Clean decal contact area with a 1:1 mixture of iso- face and remove the paper backing from “adhe-
propyl alcohol and water. sive side” of decal.
4. Thoroughly dry decal contact area and check for 3. Using a spray bottle, flood the entire “adhesive
a completely cleaned surface. side” of the decal with the pre-mixed wetting solu-
tion.

Instructions for “Wet” Application 4. Flood area where the decal will be positioned
with wetting solution.
NOTE: The following decal installation instructions
5. Position pre-wetted decal on wetted surface and
are provided for a “Wet” installation. All decals
slide into position.
should be applied wet.
6. Starting at the center of the decal, “lightly”
TOOLS REQUIRED squeegee out the air bubbles and wetting solu-
tion with overlapping strokes to the outer edge of
1. Plastic Squeegee*
the decal. Continue going over the decal surface
2. Stick Pin until all wrinkles are gone and adhesive bonds to
the cowl surface.
3. Dish Washing Liquid/Detergent without am-
monia** “Joy” and “Drift” are known to be com- 7. Wipe decal surface with soft paper towel or cloth.
patible for this process.
8. Wait 10 - 15 minutes.
** Automotive Body Filler Squeegee
9. Starting at one corner, “carefully and slowly” pull
** Do not use a soap that contains petroleum based the masking off the decal surface at a 180° angle.
solvents.
NOTE: To remove any remaining bubbles, pierce the
SERVICE TIP: Placement of decals using the decal at one end of the bubble with stick pin and
“Wet” application will allow time to position de- press out the entrapped air or wetting solution with
cal. Read entire installation instructions on this your thumb (moving toward the puncture).
technique before proceeding.

TEMPERATURE
IMPORTANT: Installation of vinyl decals should
not be attempted while in direct sunlight. Air and
surface temperature should be between 60°F
(15°C) and 100°F (38°C) for best application.

SURFACE PREPARATION
IMPORTANT: Do not use a soap or any petroleum
based solvents to clean application surface.
Clean entire application surface with mild dish wash-
ing liquid and water. Rinse surface thoroughly with
clean water.

1-18 - IMPORTANT INFORMATION 90-814676R1 DECEMBER 1996