Ec 2004
Ec 2004
MANUAL DEL
DEL USUARIO
USUARIO
SERVICE
SERVICE MANUAL
MANUAL
MANUEL
MANUEL D’ENTRETIEN
D’ENTRETIEN
LIBRETTO
LIBRETTO USO
USO EE MANUTENZIONE
MANUTENZIONE
Compuesta
By choosing the new GAS GAS EC 2004 you have just entered the great GAS GAS family and, as a user of
the number one off-road motorbike manufacturer, you deserve the distinguished treatment that we wish to offer
to you both in our after-sale relationship and in the explanations that we provide in this manual.
Our EC 2004 is a bike conceived for the practice of high-competition enduro. It is actually the fruit of many
years of competition and experimentation in this demanding discipline, as well as the many great successes
achieved thanks to great trial riders who have contributed with their expertise to the basic data that have
allowed us to create a high-level motorbike.
Congratulations for making the right choice. With your skills at the commands of this motorbike, an adequate
preparation and the indispensable servicing for this GAS GAS to be highly reliable, you will be able to enjoy
the most comfortable and rewarding enduro practice.
July 2003
EC 2004 -64-
Whenever you see the symbols shown below, heed their instructions! TO PROTECT THE FUTURE OF YOUR SPORT, MAKE SURE
Always follow safe operating and maintenance practices. YOU USE YOUR BIKE LEGALLY, SHOW CONCERN FOR THE
ENVIRONMENT, AND RESPECT THE RIGHTS OF OTHER
PEOPLE.
WARNING
Off-road motorcycle riding is a wonderful sport, and we hope you
This warning symbol identifies special instructions or procedures will enjoy it to the fullest.
which, if not correctly followed, could result in personal injury, or loss
of live.
CAUTION
This caution symbol identifies special instructions or procedures
which, if noto strictly observed, could result in damage to or destruction
of equipment.
NOTE
This note symbol indicates points of particular interest for more
efficient and convenient operation.
EC 2004 -65-
EC 2004 -66-
TRANSMISSION
Transmission type 6 speed
Clutch type Multidisc in oil bath, hidraulic actuation
Driving system Chain
Gear Ratio 1ª 2.071(29/14)
2ª 1.625(26/16)
3ª 1.333(24/18)
4ª 1.100(22/20)
5ª 0.913(21/23)
6ª 0.791(19/24)
Primary reduction ratio 2.85 (57/20)
Final reduction ratio 3.692 (48/13)
EC 2004 -67-
CHASSIS
Type Chromolly tubular semi double cradle
Tires Front 80/100 x 21
Rear 120/90 x 18
Suspension Front Upside-down telescopic ø 43mm WP fork.
Upside-down telescopic ø 45mm Marzocchi fork.
Rear Progressive system with single shock, multi adjustable, ÖHLINS
Suspension stroke Front 282 mm.
Rear 320 mm.
Front fork oil (each) Marzocchi SAE 7,5
WP SAE 5
ÖHLINS SAE 5 - 7,5
Front fork oil level Marzocchi: 110 mm (compressed with spring removed).
WP: 120 mm (compressed with spring removed).
ÖHLINS: 110 mm (compressed with spring removed).
BRAKES
Type Front, rear Disc brake
Effective disc diameter Front 260 mm.
Rear 220 mm.
DIMENSIONS
Overall length 2135 mm.
Overall width 810 mm.
Overall height 1260 mm.
Wheell base 1475 mm.
Ground clearance 340 mm.
Fuel tank capacity 9,5 Litre (2,5 gallons u.s.)
Height seat 940 mm.
(Specifications are subject to change without notice and are not applicable in some countries).
EC 2004 -68-
1 3 42 5 6
1- Clutch lever
2- Engine Stop Button
3- Fuel Tank Fill Cap
4- Front Brake Fluid Reservoir
5- Front Brake lever
6- Throttle Twist-Grip
EC 2004 -69-
13 14 15 16 9 17 21 22 23 24 25 26
EC 2004 -70-
To operate the side stand: The GAS GAS FSE 400 cc has a four stroke engine and requires
95 octane, unleaded gasoline
Release the security strap (B), the sidestand is held in the down
position by the weight of the motorcycle. Thes sidestand automatically Gas Tank Capacity
retracts when the motorcycle is placed in the upright position. ENDUCROSS FSE 9,5L
(B)
(B)
(C)
(A)
(A)
NOTE Position the vent hose clip in a position which prevents spillage on
Do not start the engine or ride the motorcycle when the side the steering bearings and the clock.
stand is down. Always engage the security strab (B) before
operation of the motorcycle.
EC 2004 -71-
Use premium gasoline with an octane rating equal to or higher than Recomended Oil:
that shown in the table. OIL 2T SINTETIC
Research Octane No. (RON) 98 Proporción of gasoline and oil mixture (premix ratio)(50 parts gasoline
to 1 part oil).
NOTE CAUTION
If "knocking" or "pinging" occurs, try a different brand of Do not mix vegetable and mineral based oils.
gasoline or higher octane grade. Too much oil will cause excessive smoking and spark plug fouling.
Too little oil will cause engine damage or premature wear.
WARNING To make an gasoline-oil mixture, pour oil and half of the gasoline
into a container first and stir the mixture thoroughly. Then add the
Gasoline is extremely flammable and can be explosive under certain rest of the gasoline and stir the mixture well.
conditions. Always stop the engine and do not smoke. Make sure
the area is well ventilated and free from any source of flame or
sparks; this includes any appliance with a pilot light. NOTE
At low temperature, oil will not easily mix with gasoline. Take
time to ensure a well-blended mixture.
The lubricative quality of this mixture deteriorates rapidly; use
Engine Oil Mixing a fresh mixture for each day of operation.
Oil must be mixed with the gasoline to lubricate the piston, cylinder,
crankshaft, bearings, and connecting rod bearings.
EC 2004 -72-
OFF RES
Reserve
Close
(A)
(A)
(B)
3. If the engine is
cold, pull up the
choke knob (B).
EC 2004 -73-
To engage first gear from neutral, pull in the clutch lever and push
down on the shift pedal, gently release the clutch lever, then release
the shift pedal.
(F)
CAUTION
4. Start the
motorcycle with When changing gears, press firmly on the shift pedal to ensure
kick start pedal (F). complete, positive shifting. Careless, incomplete shifts can cause
the transmission to jump out of gear and lead to engine damage.
5. Even after the engine starts, keep the choke knob pulled up. Until
the engine is thoroughly warmed up.
(A)
(A)
2. After racing the
engine slightly,
close the throttle
completely and
push the engine (A). Shift pedal.
stop button (A).
EC 2004 -74-
EC 2004 -75-
The maintenance and adjustments outlined in this chapter are easily carried out and must be done in accordance with the Periodic Maintenance
Chart to keep the motorcycle in good running condition.
EC 2004 -76-
The maintenance and adjustments outlined in this chapter are easily carried out and must be done in accordance with the Periodic Maintenance
Chart to keep the motorcycle in good running condition.
EC 2004 -77-
NOTE
For the best engine performance, it is very important to adjust
125 cc. the ignition timing within the adjustable range just explained.
Radiator
Check the radiator fins for obstruction by insects or mud. Clean off
any obstructions with a stream of lowpressure water.
EC 2004 -78-
- Situate the motorcycle so that it is perpendicular to the ground. Permanent type of antifreeze (soft water and ethylene glycol plus
- Remove the radiator (A) cap in two steps. First turn the cap corrosion and rust inhibitor chemicals for aluminum engines and
counterclockwise to the first stop and wait there for a few seconds. radiators.
Then push and turn it further in the same direction and remove the
cap. NOTE
A permanent type of antifreeze is installed in the cooling system
when shipped. It is colored green, contains a 50% solution of
ethylene glycol, and has a freezing point of -35º C. (-32º F )(USA).
Coolant Change
(A)
(A)
(B)
(B)
(1). Coolant level.
(2). Breather Hose.
EC 2004 -80-
Drain plug tightening torque (look maintenance table) To find out whether the right temperature plug is being used, pull it
Water Pump Cover Plug: 9 Nm. out and examine the ceramic insulator around the center electrode.
If the ceramic is light brown, the spark plug is correctly matched to
engine temperature. If the ceramic is burned whit, the plug should
- Fill the radiator up to the bottom of the radiator filler neck be replaced with the next colder plug. If the ceramic is black, the
with coolant, and install the radiator cap. plug should be replaced with the next hotter plug.
- Check the cooling system for leaks.
- Start the engine, warm up the engine throughly, then stop the
engine. NOTE
- Check the coolant level after the engine cools down. Add If the engine performance drops, replace the spark plug first to
coolant up to the bottom of the radiator filler neck. regain performance.
TRANSMISSION
SPARK PLUG
For the transmission and clutch to function properly, maintain the oil
The standard spark plug is a shown in the table. level at the proper level. Change the oil periodically. Oil at an
Spark plug should have a specified gap, and be tightened to 27 N- insufficient level deteriorates and contaminates rapidly. This
m. (20FT.LBS). accelerates wear and promotes premature failures.
EC 2004 -81-
- Stand the motorcycle upright and level allow a few minutes for the
oil to settle. Viscosity: SAE 10W30.
Capacity: 1000 cc.
Oil Change
200/250/300 cc.
(C)
(B)
- By another way, if the oil level is smaller, fill up opening the fill plug
(C). Use the same oil type than you had. 125 cc.
EC 2004 -82-
CAUTION
A clogged air cleaner may allow dirt and dust to enter the engine
causing excessive wear and possible engine damage.
Inspect the element, without fail, before and after each racing or
practice session. Clean it if necessary.
- Take the element (B)
off the frame (A).
Element Cleaning
EC 2004 -83-
CARBURETOR
Idling Adjustment
- Install the element in
Iding adjustment is carried out using the air screw (A) and idle
the machine (A), and
ajusting screw (B).
make sure the sealing
- First turn in the air screw until it seats lightly, and back it out 1 1/2
surface of the element
turns.
is seated properly.
- After thoroughly warming up the engine, turn the idle adjusting
- Install the seat. screw to obtain the desired idle speed. If no idle is preferred, turn
out the screw until the engine stops.
THROTLLE CABLE
- Inspect the throttle grip for smooth operation in all steering positions.In
accordance with the Periodic Maintenance Chart, check and adjust (B)
the throttle cable.
. Check that the throttle grip has 2-3 mm of play and turns smoothly.
. If the play is incorrect, loosen the locknut on the upper end of the
throttle cable, and turn the adjuster to obtain the correct amount of
play. Tighten the locknut.
(C) (B)(A) (A)
- Open and close the throttle a few times to make sure the idle speed
does not change. Readjust if necessary.
- With the engine idling, turn the handlebar to each side. If handlebar
(A). Adjuster. movement changes the idle speed, the throttle cable may be
(B). Locknut. improperly adjusted or incorrectly routed, or it may be damaged. Be
(C). Throttle grip. sure to correct any of these conditions before riding.
EC 2004 -84-
Operation with a damaged cable could result in an unsafe riding The muffler and silencer reduce exhaust noise and conduct the
condition. exhaust gases back away from the rider.
When there is too much lever play, first try adjusting the clutch lever. - Remove the right side cover.
- Remove the silencer (B) mounting bolts (A) and pull the silencer
Loosen the knurled locknut, turn the adjuster to obtain the proper off toward the rear.
amount of lever play, and tighten the locknut.
(D) (B)
(A) (B)
(C) (A)
Install the inner pipe
(A). Clutch lever.
- Remove the inner pipe mounting rivots, and pull out the inner pipe.
(B). Knurled Locknut.
- Pull off the old silencer packing, and install the new silencer packing.
(C). Adjuster.
- Install the inner pipe into the silencer.
(D). Hydraulic fluid tank.
- Install the silencer and right side cover.
EC 2004 -85-
30-50 mm.
(A)
EC 2004 -86-
WARNING
When the chain has worn so much that it is more than 2% longer
than when new, it is no longer safe for use and should be replaced.
Whenever the chain is replaced, inspect both the engine and rear
sprockets, and replace them if necessary. Worn sprockets will cause (A)
a new chain to wear quickly.
NOTE
For maximum strech resistance and safety, a genuine part must
be used for replacement. (A). Chain Guide.
To minimize any chance of the master link coming apart, the
EC 2004 -87-
(A) (B)
(A). Apply oil.
HANDLEBAR
Sprocket Wear
(B) (A)
Visually inspect the sprocket teeth. If they are worn or damaged,
replace the sprockets.
Lubrication
EC 2004 -88-
BRAKES
(A) (B)
Disc and disc pad wear is automatically compensated for and has
no effect on the brake lever or pedal action. So there are no parts
that require adjustment on the brakes except brake lever play and
brake pedal position
WARNING
(B)
If the brake lever or pedal feels mushy when it is applied, there might
be air in the brake lines or the brake may be defective. Since it is
dangerous to operate the motorcycle under such conditions, have
the brake checked inmediately.
EC 2004 -89-
Fluid level inspection Do not mix two brands of fluid. Change the brake fluid in the brake
line completely if the brake fluid must be refilled with a type other
The front (A) and rear (B) reservoirs must be kept more than half than the brake fluid already in the reservoirs.
full with brake fluid.If the amount of brake fluid is insufficient, add
brake fluid. Brake wear inspection
(A) Steering
(B)
EC 2004 -90-
- Using the stand under the frame, stabilize the motorcycle. STEERING BLOCADE
- Place a stand or block under the engine to raise the front wheel
off the ground. This mecanism (A) allows us to blokade the steering. Is placed on
- Remove the handlebar (A). pipe steering.
(A) You have to turn right the handlebar, pull in the key, turn left the key,
push, turn right and pull out the key.
(A)
(C)
(D) (B)
- Loosen the front fork upper clamp bolts, and remove the steering
head nut and washer, and take off the steering stem head (B).
- Turn the steering stem locknut with the stem nut wrench to obtain
the proper adjustment (C). (A). Steering blocade.
- Install the stem head (D).
EC 2004 -91-
The front fork should always be adjusted for the rider´s weight and
track conditions by using one or more of the following methods.
- Oil level adjustment: The effects of higher or lower fork oil level - To adjust turn the knob located at the top of the fork.
are only felt during the final 100 mm of fork travel. A higher oil level - Adjust to rider preferance.
will make the fork rebound more slowly.
- Fork springs: Optional springs are available that are softer and
stiffer than standard.
Air Pressure
EC 2004 -92-
- To adjust, turn the knob located at the top of the fork. Adjust to
rider preferance.
Recomended oil
EC 2004 -93-
Fork Springs
- Pull up the push rod (A) slowly. Fork Clamp Position Adjustment
- At this time, the fork oil comes out of the push rod hole, let it
overflow until it stops. Steering qualities are greatly affected by the fork clamp position (the
- Put the fork spring (1) into the fork tube. amount of the outer tube projecting above the steering stem head).
- Pull down the fork spring and insert the spring holder (5) (special When the fork tube height is smaller, the front end becomes lighter
tool) under the push rod nut or piston holder. due to change in weight bias. Also, it tends to understeer in turns
- Install the top cap bolt (3) on the top of the fork tube and tighten at «whash out». When the height is greater, the results are opposite.Be
it to 29 N-m. (21 ft.lbs). sure the front tire doesn´t rub the fender when the fork tubes compress
- Repeat on other fork. fully. Make this adjustment in 5mm increments.
- Install removed parts.
CAUTION
The outer tubes, both right and left, should be adjusted evenly.
EC 2004 -94-
(1)
REAR SUSPENSION
The rear suspension system of this motorcycle is single shock. It (A). Rebound dampening adjuster.
consist of a rear shock absorber, swing arm, tie rods and rocker
arm.
Shock compression dampening adjustment
In general the operating characteristics of the single shock are similar
to the front fork. But, in achieving progressive spring characteristics To adjust schock compression dampening, turn the adjuster screw
a linkage system is used. on the gas reservoir until you feel a (click).
To suit various riding conditions, the spring preload of the shock The total number of adjustments is: 60 ¨CLICKS¨.
absorber can be adjusted or the spring can be replaced with an The standard setting is: 30 ¨CLICKS¨.
optional one. Also the dampening force can be adjusted easily so
changing oil viscosity is unnecessary. (Counterclockwise from fully closed).
EC 2004 -95-
(A) (C)
(A). Compression dampening adjuster
(B)
Adjusting the spring
(A). Adjusting
- Remove the seat, right and left side number plates. (B). Spring
- Loosen the air cleaner duct clamp screw. (C). Lock nut (ring)
- Remove the silencer.
- Remove the rear subframe with the air cleaner box.
- Tighten the locknut (ring) securely.
- After adjustment, move the spring up and down to make sure that
the spring is seated.
- Install the parts removed.
EC 2004 -96-
Improper removal of the spring from the rear shock absorber body
may cause the spring and associated parts to be ejected at high
velocity. Always wear eye and face protection. Removal and installation
of spring should be performed by an person or company.
WHEELS
Tires
(A). Spoke Wrench.
- Tire pressure affects traction, handling, and tire life.
- Adjust the tire pressure to suit track conditions and rider preference,
but do not stray too far from the recommended pressure.
EC 2004 -97-
- Remove the plastic bags, and clean the air cleaner intake.
1- Preparation for washing - Lubricate the points listed in the lubrication section.
- Start the engine and run for 5 minutes.
Before washing, precautions must be taken to keep water off the - Dry the brakes before operating the motorcycle.
following places:
Rear opening of: The silencer cover with a plastic bag secured WARNING
with rubber bands
Never wax or lubricate the brake disc. Loss of braking and an accident
Clutch and brake levers, hand grips, engine stop button: Cover could result. Clean the disc with an oil-less solvent such as
with plastic bags. trichloroethylene or acetone.
2- Where to be careful
Avoid spraying water with any great force near the following
places:
EC 2004 -98-
Every day before riding, check without fail the tighteness of the bolts and nuts described here. Also, check to see whether or not each cotter pin
is in place and in good condition.
10 11 12 13 14 15 16 17 18 26 27 28,29 30,31,32 33
1- Bead lock nut 10-Spokes 19-Seat mounting bolt 28-Rear brake pedal bolt
2- Front fork clamp bolts 11-Front axle clamps nuts 20-Subframe bolts 29-Rocker arm mounting bolt
3- Handlebar mounting bolt 12-Brake hose clamp nuts 21-Rear chock absorber bolts 30-Swingarm shaft nut
4- Clutch lever support bolt 13-Radiator mounting bolts 22-Exhaust mounting bolts and nut 31-Kick pedal bolt
5- Cylinder head bolts 14-Engine mounting nuts 23-Fork clampbots 32-Kick pedal nut
6- Spark plug 15-Shift pedal bolt 24-Steering shaft nut 33-Brake hose mounting bolts
7- Cylinder head bolts 16-Rear subframe mounting bolts 25-Rear brake mounting bolt
8- Air cleaner box bolts 17-Chain guide bolts 26-Rear axle nut
9- Disc plate screws 18-Chain adjuster locknuts 27-Connecting rod mounting bolt
EC 2004 -99-
Tighten all bolts and nuts to the proper torque using an accurate torque wrench. A bolt or nut if insufficiently tightened may become damaged or
fall out, possibly resulting in damage to the motorcycle and injury to the rider.
EC 2004 -100-
Lubricate the points shown here, with either motor oil or regular
grease, in accordance with the Periodic Maintenance Chart or
whenever the vehicle has been operated under wet or rainy conditions,
and especially after using a high pressure spray washer. Before
lubricating each part, clean off any rusty spots with rust remover and
wipe off any grease, oil, dirt, or grime.
(D)
General lubrication
The number of the main jet, stamped on the bottom or side of the
jet, indicates the relative size of the hole in the jet which meaters
fuel.
TUNING
1. CARBURETOR TUNING
EC 2004 -102-
The slow jet and air srew controls the mixture in the closed to 1/8 The jet needle and jet needle hole together have their greatest effect
throttle range, but has little effect on up to full throttle. To adjust the in the 1/4 to 3/4 throttle range. The needle moves in and out of the
mixture in this range, the air screw can be turned to change the air jet needle hole; since the needle is tapered, its position in the jet
flow through the circuit, or the slow jet can be changed to provide determines the amount of fuel allowed through. There are five
more or less fuel. Start by turning the air screw to provide more or grooves in the top of the needle in which a circlip fits. This clip
less fuel. Screwing it in richens the mixture. Air screw (A) specs locates the needle in the throttle valve and, therefore, determines
indicate the turns out from a lightly seated position. Make changes its position relative to the jet needle hole.
in 1/2 turn increments. If turning the srew between one and two- Clip position
and-a-half turns doesn´t provide the desired results, change the
slow jet (B).
Needle size
number
Working area
Test runs
EC 2004 -103-
- Set the carburetor so that the engine delivers satisfactory power Slow jet: # 50 x 0.94 = #47
at any throttle opening. Chiclé principal: # 162 x 0.94 = # 1
- If the air-fuel mixture is too lean, the engine tends to overheat and
may seize up; on the other hand, if it is too rich, the spark plug easily 3. Find your correction factor on the Jet Needle/Air Screw chart and
gets wet, thus causing richness, the spark plug easily gets wet, thus change the jet needle clip position and air screw opening as indicated.
causing misfires. The proper strength of the mixture varies depending
on atmospheric conditions (pressure, humidity, and temperature). Example: For correction factor of 0.94, raise the needle clip one
Taking these conditions into consideration, adjust the carburetor position and turn out the air screw one extra turn.
settings properly
- Jet needle clip setting: 3rd groove from top minus 1 - 2nd groove.
- Air screw opening: 1 1/2 + 1 turn = 2 1/2 turns out.
Standard Settings
NOTE
FUEL UNLEADED LEADED For the following recommendations to be accurate, you must
use the standard settings as a base-line. Also don´t change any
Throttle valve cutaway 7 7 of the settings until you´ve determined what changes are
Slow jet 38 35 necessary. All specifications are based on the use of the
Jet needle N1EC N1ED specified fuel and oil.
Main Jet 185 160
EC 2004 -104-
0
(32)
-10
(14) 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06
CORRECTION FACTOR
JET NEEDLE LOWER CLIP SAME SAME SAME RAISE CLIP ONE
SETTING ONE POSITION POSITION
AIR SCREW ONE TURN IN 1/2 TURN IN SAME 1/2 TURN OUT ONE TURN OUT
OPENING POSITION
EC 2004 -105-
No area of machine adjustment is more critical than proper suspension The fork oil level in the fork tube is adjustable. A change in the fork
tuning. An improperly tuned suspension will keep even the best rider oil level will not affect the spring force much at the top of fork travel,
from attaining the full benefit of his machine´s ability. Match the but it will have a great effect at the bottom:
suspension to the rider and the course conditions. - When the oil level is raised:
The air spring effect becomes more progressive, and the front fork
- If the machine is new, break-in the suspension with at least one action feels ¨harder¨in the later stage of travel, near the bottom.
hour of riding before making any setting evaluations or changes.
- When the oil level is lowered:
- The three major factors which must be considered in suspension The aire spring is less progressive, and the front fork does not
tuning are Rider weight, rider hability, and track conditions. Additional become as ¨hard¨ in the later stage of travel.
influences includE the rider´s style and positioning on the machine.
- Changing the fork oil level works effectively at the end of fork travel.
- If you have a problem, test by changing your riding posture or If fork bottoming is experienced, raise fork fork oil level in 10 mm
position so that the cause of the problem can be deduced. increments. This will change the secondary spring rate.
Standard oil
- When evaluating suspension performance the rider must make level
every effort to ride consistently and recognize the effects of his input; Decrease level
such things as changes in rider position and increasing fatigue may
lead to incorrect judgments about neceessary setting adjustments.
Weight
- When the proper settings have been determined for a particular
track, they should be written down for reference when returning to
that track. Later stage
Fork stroke of travel
EC 2004 -106-
Too soft
EC 2004 -107 -
Beginner Softer: spring with more rebound damping. Use this procedure to determine if the suspension is balanced
Experienced: Harder spring. reasonably well: Hold the bike upright (retract the side stand). While
standing next to the machine, lightly pull on the front brake, place
one foot on the footpeg closest to you, and push down hard. If the
Rider's weight bike maintains its level attitude as the suspension is compressed,
the spring rates are well balanced. Sit astride the bike and take a
Heavy: Harder spring. riding posture. Next check to see that the bike is in a horitzontal
Light: Softer spring. position. If one end drops noticeably more than the other, the front
and rear are not compatible and must be readjusted to achieve a
better balance.
Type of course This is one of the most effective adjustment procedures but suspension
settings will vary depending on the conditions at the track and the
- Many corners: rider´s preferences.
Lower the front end slightly (increase the fork tube height 5mm).This
quickes steering and turning ability.
Front end seaching during down hill or during acceleration out
- Fast course with many jumps: of corner:
Raise the fornt end slightly (decrease the front tube height 5 mm). Front fork is too soft.
- Deep whoops, or sandy ground: 1. Increase the compression damping or rebound damping.
Raise the front end slightly to gain stability. 2. Increase the oil level 10 mm.
3. Use alternate harder sping, or increase spring preload.
fter making such preliminary adjustments, begin the actual on-track
testing and evaluation. Front end ¨knifes¨or oversteers in turns: (front end tends to
turn inward):
Front fork is too soft.
CAUTION
1- Always make changes in small increments. 1. Increase the compression damping or rebound damping.
2-Make sure the rider is consistent in this evaluation of improper 2. Increase the oil level 10 mm.
suspension performance.
3- A change in the front suspension might require a change in the Front end pushes or ¨washes out¨in turns:
rear, and vise versa. 1. Decrease the compression damping or rebound damping.
2. Release the air at the fork tubes.
3. Decrease oil level 10-20 mm.
4. Use softer spring.
EC 2004 -108-
EC 2004 -109-
- If the straight portion of a course on which the machine can be run 6. In dusty conditions as the air cleaner collects dust, the engine
at maximum speed is longer, the machine should be set so that the runs richer. Therefore it may be advisable to run slightly leaner jetting
maximum machine speed can be developed toward the end of the (main jet) in very dusty conditions.
straight course, but care should be taken not to over-rev the engine.
- It is difficult to set the machine to be best suited for all portions of SPARE PARTS
the circuit. Therefore, determine which circuit portions will have the Look at part list.
greatest effect on lap time. Set the machine for these portions.
Confirm your settings by recording lap times after each change. In
this way the machine will deliver best performance for the entire
circuit.
2. When riding on wet heavy clay the mud adheres to the tires and
other parts of the vehicle. The mud can add significantly to the weight
of the vehicle and therefore reduce performance. Take care to remove
built-up mud from the tires and chassis after each ride, before drying
occurs.
EC 2004 -110-
EC 2004 -111-
When the motorcycle is to be stored for any lenght of time, it should The top button is the reset button.
be prepared for storage as follows: The bottom button is the mode button.
- Clean the entire vehicle thoroughly.
- Run the engine for about five minutes to warm the oil shut it off
and drain the transmission oil.
- Put in fresh trransmission oil.
- Empty the fuel from the fuel tank, and empty the carburetor float Reset
bowl. (If left in for a long time, the fuel will deteriorate).
- Remove the spark plug and put several drops of SAE 30 oil into Mode
00:00
the cylinder. Kick the engine over slowly a few times to coat the
cylinder wall with oil, and install the plug.
- Lubricate the drive chain and all the cables.
- Spray oil on all unpainted metal surfaces to prevent rusting. Avoid
getting oil on rubber parts or in the brakes.
- Tie a plastic bag over the exhaust pipe to prevent moisture from The initial display is the clock.(time) if you press mode (btm. button)
entering. the display goes:
- Set the motorcycle on a box or stand so that both wheels are
raised off the ground. (If this cannot be done, put boards under the 1. Speedometer.
front and rear wheels to keep dampness away from the tire rubber). 2. Speed (Km or miles).
- Put a cover over the motorcycle to keep dust and dirt from collecting 3. Total distance in kmh or miles (this has a memory even if battery
on it. disconnected).
4. Trip distance.
Speedometer Speed
EC 2004 -112-
0000 0.0 - The white plastic block connector on the speedo is for the display
backlight.
- The red wire is positve.
- The black wire is negative.
Total distance Trip distance
- Warning; your speedo is set for the diameter of your front wheel
To change the time:
enduro 21"
- Press mode until time display is shown. supermoto 17"
- Press mode again keeping the button pressed the hour will display
only add the hours by pressing the reset (top) button.
- Press mode again to adjust the minutes in the same way. If you get the display to read "a 00" then you are in the rolling radius
- Press mode again and the time is now set. changing mode. you can "trim" the speed to run fast or slow.
It ranges from "a-25" to "a 25".
(when you have set the time the seconds automatically start from
zero )
NOTE
Standard setting is "a 00", we recommend you keep it at that.
Trip distance:
- From time display press mode 3 times. (l- 0) to zero the trip , keep
the reset button pressed until it zeros.
EC 2004 -113-
NOTE
This is not an exhaustive list, giving every possible cause for each problem listed. It is meant simply as a rough guide to assist the
troubleshooting for some of the more common difficulties.
2 Engine start but stops few - Incorrect air supply. - Close the starter. Clean fuel tank air vent. Check the air
seconds ago. filter.
- There isn't fuel. - Fill up fuel tank.
3 Engine gets to hot - Insufficient cooling liquid. - Full up cooling liquid, check system refrigeration.
- Radiators very dirty. - Clean radiators.
4 Engine flooded - Spark plug dirty, or maladjusted. - Check spark plug, clean, adjust or replace.
- Spark plug cap or high tension wiring - Check spark plug cap, if it's damaged, change it.
trouble.
- Wiring shorted or open. - Change wiring.
EC 2004 -114-
4 Engine flooded - Water in fuel. - Empty fuel tank and fill up with new one.
5 Engine does not rev high, will - Fuel supply partically interrupted or - Clean and check fuel system as well as carburettor.
not reach full power carburettor dirty.
- Dirty air filter. - Clean and change the air filter.
- Hose of engine ventilation is bent. - Replace non-buckling ventilation hose.
- Main jet clogged. - Dismount carburetor and clean main jet.
- Crankshaft bearing worn or damaged. - Change crankshaft bearing.
- Clutch slipping. - Check clutch. Go to specialized garage.
8 Exhaust pipe get out white - Cylinder head gasket leaking. - Change cylinder head gasket leaking. Go to specialized
smoke. garage.
- Gas valve passage maladjusted. - Adjust gas valve passage. Go to specialized garage.
9 Exhaust pipe get out brown - Air filter is bloked. - Clean or change the air filter. Go to specialized garage.
smoke. - Main jet higher. - Check main jet. Go to specialized garage.
10 Clutch not disengaging properly - No clutch lever play maladjusted. - Go to specialized garage.
- Friction plate worn or warped. - Change friction plate.
- Steel plate worn or warped. - Go to specialized garage.
- Gear lever damaged. - Change gear lever.
- Clutch spring broken or weak. - Check or change clutch spring.
- Clutch release mechanism trouble. - Check clutch release mechanism.
EC 2004 -115-
10 Clutch not disengaging properly - Clutch hub or housing unevenly worn. - Change clutch hub.
11 Jumps out of gear - Shift fork worn, gear worn. - Change it and go to specialized garage.
- Gear dogs and/or dog holes worn. - Change it and go to specialized garage.
- Shift drum groove worn. - Change it and go to specialized garage.
- Gear positioning. - Change it and go to specialized garage.
- Lever spring weak or broken. - Change it and go to specialized garage.
13 Stability Unsatisfactory - Control cable routing incorrect. - Move control cable or unscrew.
- Wiring routing incorrect. - Unscrew wiring routing.
- Steering stem locknut too tight. - Change steering stem locknut.
- Steering stem bent. - Change and go to specialized garage.
14 Shock absorption too hard - Front fork oil excessive. - Empty and review level oil.
- Front fork oil viscosity too hight. - Empty oil from fork and go to specialized garage.
- Front fork leg bent. - Change it. Go to a specialized garage.
- Tire air pressure too high. - Check tire air pressure.
- Rear shock absorber maladjusted. - Check rear shock absorber.
15 Shock absorption too soft - Front fork oil insufficient and/ or leaking. - Fill up until correct level.
- Front fork oil viscosity too low. - Empty oil from fork and fill up with suitable viscosity oil.
- Front fork leg bent. - Change front fork. Go to specialized garage.
- Tire air pressure too small. - Check tire air pressure.
- Rear shock absorber maladjusted. - Check rear shock absorber.
EC 2004 -116-
16 Abnormal train noise - Rear and/or engine sprocket worn. - Change it.
- Chain lubrication insufficient. - Lubricate with apropiate chain oil.
- Rear wheel misaligned. - Align rear wheel.
- Oil front fork insufficient or too thin. - Add oil until correct level.
- Spring weak or broken. - Change spring.
- Disc brake worn. - Change disc brake.
- Pad installed incorrectly or surface glazed. - Replace pad or change.
- Cylinder damaged. - Change cylinder damaged.
- Bracket, nut, bolt, etc. not properly - Go to specialized garage.
mounted or tightened.
17 Handlebar shakes or excessivery - Tire, swing arm sleeve or needle bearin - Change it for new pieces.
vibrates damaged.
- Rim warped. - Centre rim.
- Wheel misaligned. - Check wheel rim pressure. Adjust if it is necessary.
- Front/ rear axle runout excessive. - Check rear/ front axle steering. Adjust if it's necessary.
20 Las lámparas se funden - El regulador de la tensión están - Dismount seat and fuel tank and chec connections, have
defectuosos. voltage regulator checked and fuse of box fuses.
21 El sistema de iluminación no - El fusible del relé de iluminación está - Dismount seat and fuse box cover and replace fuse.
funciona fundido.
EC 2004 -117-
EC 2004 -118-
Miscellaneous
EC 2004 -119-
PU010438002
JULIO / JULY 2003
C/ UNICEF nº 17 · Poligon Industrial Torremirona · 17190 Salt (Girona) SPAIN · Tel: +34 902 47 62 54 Fax: +34 902 47 61 60
E-mail: officegg@gasgasmotos.es / partsgg@gasgasmotos.es · Web: www.gasgasmotos.es
Compuesta