Powersmart ENGINE 159cc
Powersmart ENGINE 159cc
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Website: www.Amerisuninc.com
www.powersmartusa.com
TECHNICAL DATA
Engine type: 4 stroke, OHV, single cylinder with forced air cooling system
Displacement: 159 cc
Bore x stroke: 65 x 48 mm
Net. power: 2.7 KW/3600 rpm
Net. torque: 8.5 N.m/2500 rpm
Fuel consumption: ≤395 g/KW.h
Idle speed: 2200±150 rpm
Compression ratio: 7.6: 1
Lubrication mode: Splash
Starting mode: Recoil start
Rotation: Anti-clockwise (from P.T.O. side)
Valve clearance: Intake: 0.10 - 0.15 mm, Exhaust: 0.15 - 0.20 mm
Spark plug clearance: 0.7- 0.8 mm
Oil type: SAE 10W-30
Oil capacity: 17 fl.oz
Fuel tank capacity: 0.26 Gallon
The power rating of the engine indicated in this document is the net power output tested on a production
engine for the engine model and measured in accordance with SAE J1349 at 3,600 rpm (Net Power) and at
2,500 rpm (Max. Net Torque). Mass production engines may vary from this value.
Actual power output for the engine installed in the final machine will vary depending on numerous factors,
including the operating speed of the engine in application, environmental conditions, maintenance, and other
variables.
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INTRODUCTION
Thank You for Purchasing a PowerSmart® Product. This manual provides information regarding the safe
operation and maintenance of this product. Every effort has been made to ensure the accuracy of the
information in this manual. PowerSmart® reserves the right to change this product and specifications at
any time without prior notice.
Please keep this manual available to all users during the entire life of the engine.
This manual contains special messages to bring attention to potential safety concerns, engine
damage as well as helpful operating and servicing information. Please read all the
information carefully to avoid injury and machine damage.
QUESTIONS? PROBLEMS?
Please contact our Customer Service Dept. with any questions and/or comments, either by Email:
support@amerisuninc.com, or Toll Free at (800) 791-9458. We are available Mon-Fri 9am-5pm EST to
help solve any issues that you might encounter.
NOTICE REGARDING EMISSIONS
Engines that are certified to comply with U.S. EPA emission regulations for SORE (Small Off Road
Equipment), are certified to operate on regular unleaded gasoline, and may include the following
emission control systems: (EM) Engine Modifications and (TWC) Three-Way Catalyst (if so equipped).
SAFETY INFORMATION
IMPORTANT SAFETY INFORMATION
Most accidents with engines can be prevented if you follow all of the instructions in this manual and on
the engine. Some of the most common hazards are discussed below, along with the best way to protect
yourself and others.
Owner Responsibilities
• These engines are designed to provide safe and dependable service if operated according to
instructions. Read and understand this owner’s manual before operating the engine. Failure to do so
could result in personal injury or equipment damage.
• Know how to stop the engine quickly, and understand the operation of all controls. Never permit
anyone to operate the engine without proper instructions.
• Do not allow children to operate the engine. Keep children and pets away from the area of operation.
Warning: Gasoline and its vapors are extremely flammable and explosive.
Warning: Fire or explosion can cause severe burns or death.
• Turn engine OFF and let engine cool at least 2 minutes before removing gas cap.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. Fill tank to approximately 1-1/2 inches below top of neck to allow for fuel
expansion.
• Keep gasoline away from sparks, open flames, pilot lights, heat, and other ignition sources.
• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary.
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WHEN STARTING ENGINE
• Make sure spark plug, muffler, fuel cap and air cleaner are in place.
• Do not crank engine with spark plug removed.
• If fuel spills, wait until it evaporates before starting engine.
• If engine floods, set choke to OPEN/RUN position, place throttle in FAST and crank until engine
starts.
Store away from furnaces, stoves, water heaters or other appliances that have pilot light or other ignition
source because they can ignite gasoline vapors.
Warning: Rapid retraction of starter cord will pull hand and arm toward engine faster than
you can let go.
Warning: Broken bones, fractures, bruises or sprains could result.
• When starting engine, pull cord slowly until resistance is felt, then pull rapidly.
• Remove all external equipment/engine loads before starting engine.
• Direct coupled equipment components such as, but not limited to, blades, impeller, pulleys,
sprockets, etc., must be securely attached.
Warning: Internal combustion engines give off carbon monoxide, an odorless, colorless,
poison gas.
Warning: Rotating parts can contact or entangle hands, feet, hair, clothing, or accessories.
Traumatic amputation or severe laceration can result.
• Operate equipment with guards in place. Keep hands and feet away from rotating parts. Tie up long
hair and remove jewelry.
• Do not wear loose-fitting clothing, dangling drawstrings or items that could become caught.
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Warning: Running engines produce heat. Engine parts, especially muffler, become
extremely hot. Severe thermal burns can occur on contact. Combustible debris, such as leaves,
grass, brush, etc. can catch fire.
• Allow muffler, engine cylinder and fins to cool before touching.
• Remove accumulated combustibles from muffler area and cylinder area.
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ENGINE PREPARATION
The following section describes steps necessary to prepare the engine for use. If after reading this section,
you are unsure about how to perform any of the steps please call (800) 791-9458 Mon-Fri 9-5 EST for
customer service. Failure to perform these steps properly can damage the engine or shorten its lifespan.
ADD OIL
The engine is shipped without oil. User must add the proper amount of oil before operating the engine for
the first time. The oil capacity of the engine crankcase is 17 fl.oz. For general use (above 40° F), we
recommend 30W, 4-stroke engine oil.
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ADD GASOLINE
WARNING: This engine may emit highly flammable and explosive gasoline vapors, which
can cause severe burns or even death if ignited. A nearby open flame can lead to explosion
even if not directly in contact with gasoline.
Use fresh (within 30 days from purchase), lead-free gasoline with a minimum of 87 octane rating. Do not
mix oil with gasoline.
IMPORTANT:
• Never use an oil/gasoline mixture.
• Never use old gasoline.
• Avoid getting dirt or water into the fuel tank.
• Gasoline can age in the tank and make starting difficult. Never store engine for extended periods
of time with fuel in the tank or the carburetor.
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MAINTENANCE
Proper routine maintenance of this engine will help prolong the life of the machine.
The warranty on this product does not cover items that have been subjected to operator abuse or
negligence. To receive full valve from warranty, operator must maintain the engine as instructed here.
Periodically check all fasteners and make sure these are tight.
Warning: Always stop engine, allow engine to cool, disconnect spark plug wire before
performing any type of maintenance on your machine.
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CHANGE ENGINE OIL
Drain the used oil while the engine is warm. Warm oil
drains quickly and completely.
1. Place a suitable container below the engine to catch the
used oil, and then remove the filler cap/dipstick, the
drain bolt and sealing washer.
2. Allow the used oil to drain completely, and then
reinstall the drain bolt and sealing washer, and tighten
it securely.
3. With the engine in a level position, fill to the upper
limit mark on the dipstick with the recommended oil.
4. Reinstall the oil filler cap/dipstick securely.
CAUTION: Running the engine with a low oil level can cause engine damage.
AIR CLEANER
Remove the air cleaner cover and inspect the filter. Clean or replace dirty filter elements. Always replace
damaged filter elements.
CAUTION: A dirty air filter will restrict air flow to the carburetor, reducing engine performance.
If you operate the engine in very dusty areas, clean the air filter more often than specified in the
MAINTENANCE SCHEDULE.
Inspection
1. Press the latch tabs on the air cleaner cover. Check the filter to be sure it is clean and in good
condition.
2. Reinstall the filter and air cleaner cover.
Cleaning
1. Tap the paper filter on a hard surface a few
times to remove dirt. Alternatively, you can
blow compressed air (less than 30 PSI) through
the filter from the clean side that faces the
engine. Never attempt to brush the dirt from
and paper air filter. This will only force dirt
deeper into the fibers.
2. If the filter appears to be very dirty,
replacement is generally the best option.
3. Wipe dirt from the air cleaner body and cover it
using a moist rag. Be careful to prevent dirt from entering the air duct that leads to the carburetor.
SPARK PLUG
Recommended spark plugs: E7RTC or other equivalents.
CAUTION: An incorrect spark plug can cause engine damage.
1. Disconnect the spark plug cap, and remove any dirt from around the spark
plug area.
2. Remove the spark plug with a spark plug wrench.
3. Inspect the spark plug. Replace it if the electrodes are worn, or if the insulator
is cracked or chipped.
4. Measure the spark plug electrode gap with a suitable gauge. The gap should
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be 0.028 - 0.031 in (0.70 - 0.80 mm). Correct the gap, if necessary, by carefully bending the side
electrode.
5. Install the spark plug carefully, by hand, to avoid cross-threading.
6. After the spark plug seats, tighten with a spark plug wrench to compress the water. If reinstalling the
used spark plug, tighten 1/8 - 1/4 turn after the spark plug seats. If installing a new spark plug, tighten
1/2 turn after the spark plug seats.
CAUTION: A loose spark plug can overheat and damage the engine. Over tightening the spark plug can
damage the threads in the cylinder head.
7. Attach the spark plug cap.
STORAGE/ TRANSPORTING
Storage Preparation
Proper storage preparation is essential for keeping your engine trouble free and easy to start. The
following steps will help to keep rust and corrosion from impairing your engine’s function and
appearance, and will make the engine easier to start after storage.
Cleaning
If the engine has been running, allow it to cool for at least half an hour before cleaning. Clean all exterior
surfaces, touch up any damaged paint, and coat other areas that may rust with a light film of oil.
CAUTION: Using a garden hose or pressure washing equipment can force water into the air cleaner or
muffler opening. Water in the air cleaner will soak the air filter, and water that passes through the air filter
or muffler can enter the cylinder, causing damage.
Water contacting a hot engine can cause damage. If the engine has been running, allow it to cool for at
least half an hour before washing.
Gasoline
Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting, and leaves gum
deposits that clog the fuel system. If the gasoline in your engine deteriorates during storage, you may
need to have the carburetor and other fuel system components serviced or replaced.
The length of time that gasoline can be left in your fuel tank and carburetor without causing functional
problems will vary with such factors as seasonal blend, your storage temperatures, and whether the fuel
tank is partially or completely filled. The air in a partially filled fuel tank promotes fuel deterioration.
Very warm storage/temperatures accelerate fuel deterioration. Fuel deterioration problems may occur
within a few months, or even less if the gasoline was not fresh when you filled the fuel tank.
The Limited Warranty does not cover damage to fuel system or engine performance problems resulting
from improper off season storage or preparation.
You can extend fuel storage life by adding a fuel stabilizer that is formulated for that purpose, or you can
avoid fuel deterioration problems by draining the fuel tank and carburetor.
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2. After adding a fuel stabilizer, run the engine outdoors for 10 minutes to be sure that treated gasoline
has replaced the untreated gasoline in the carburetor.
Storage Precautions
1. Replace the engine oil.
2. Remove the spark plugs.
3. Pour a tablespoon (5-10 cc) of clean engine oil into the cylinder.
4. Pull the starter rope several times to distribute the oil in the cylinder.
5. Reinstall the spark plugs.
6. Pull the starter rope slowly until resistance is felt. This will close the valves so moisture cannot enter
the engine cylinder. Return the starter rope gently.
7. With the engine and exhaust system cool, cover the engine to keep out dust. A hot engine and exhaust
system can ignite or melt some materials. Do not use sheet plastic as a dust cover. A nonporous cover
will trap moisture around the engine, promoting rust and corrosion.
If the cylinders were coated with oil during storage preparation, the engine may smoke briefly at startup.
This is normal.
Transporting
If the engine has been running, please allow it to cool for at least 15 minutes before loading the power
equipment on the transport vehicle. A hot engine and exhaust system can burn you, and potentially can
ignite some materials. It is also important to keep the engine upright and level when transporting to
reduce the leakage of gasoline and oil.
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EXPLODED VIEW AND PARTS LIST
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CRANK CASE COVER CRANKSHAFT/PISTON
Item Stock # Description Qty Item Stock # Description Qty
1 110820038-0001 CASE COVER 1 1 130070150-0001 RING SET 1
2 380140054-0006 BOLT, FLANGE 7 2 130030170-0001 PISTON 1
3 380650347-0001 OIL SEAL 1 3 130060030-0001 PIN.PISTON 1
4 380600121-0001 PIN, DOWEL 2 4 380560055-0001 CLIP, PISTON PIN 2
5 380140077-0005 BOLT, FLANGE 1 5 130150051-0001 ROD ASSY., CONNECTING 1
EDDP GROOVE BALL
6 174280002-0001 GOVERNOR COMP 1 6 380630137-0002 1
BEAEING
7 171640003-0001 PLATE, GOVERNOR HOLDER 1 7 130290107-0001 CRANKSHAFT COMP 1
8 110830053-0001 PACKING, CASE COVER 1 8 380450518-0001 WASHER 1
9 380600120-0001 OCATION PIN 2
10 150570002-0001 RUBBER, OIL DEFLECTOR 1
11 110260025-0001 BOLT, DRAIN PLUG 1
12 380450514-0001 WASHER 1
13 110690016-0002 OIL DIPSTICK 1
14 380140100-0003 BOLT, FLANGE 1
CAMSHAFT STARTER
Item Stock # Description Qty Item Stock # Description Qty
1 140450086-0001 ARM, VALVE ROCKER 1 1 193490225-0001 STARTER SUBASSEMBIY 1
2 380450534-0001 WASHER 1 2 193690016-0004 HOOD, FAN COVER 1
3 140380020-0001 RETAINER, VALVE SPRING 2 3 380200008-0005 SCREW, PAN 3
4 140340022-0001 SPRING, VALVE 2 4 380370066-0001 NUT, FLANGE 3
LAMINA,CONTEOL
5 140400016-0001 SEAL, VALVE STEM 1 5 173910003-0001 1
THROTTLE
6 500550067-0001 VALVE ASSY. 1 6 141140003-0001 DUST CAP 1
HEXAGON SHAFT
7 140670029-0001 ROD, PUSH 2 7 380020090-0001 1
SHOULDER BOLT
CHOKE WALVE PULL
8 140690002-0001 LIFTER 2 8 171650021-0001 1
ROD
CHOKE WALVE PULL
9 140020105-0001 CAMSHAFT ASSY. 1 9 171650022-0001 1
ROD
CONTROL COMPONENTS 1
11 171470010-0001
OF CHOKE
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CARBURETOR FLYWHEEL/Ignition Comp
Item Stock # Description Qty Item Stock # Description Qty
1 170430155-0001 PACKING, INSULATOR 1 1 270920286-0001 COIL ASSY., IGNITION 1
2 170440079-0001 INSULATIR, CARBURETOR 1 2 380140086-0002 BOLT, FLANGE 1
3 170430147-0001 PACKING, CARBURETOR 2 3 270020096-0001 FLYWHEEL COMP 1
4 170450001-0001 INSULATOR, CARBURETOR 1 4 160180015-0001 FAN, COOLING 1
5 170021144-0001 CARBURETOR 1 5 193590005-0001 PULLEY, STARTER 1
6 170430133-0001 GASKET, AIR CLEANER 1 6 380370051-0001 NUT, SPECIAL 1
LOCKER OF CHOKE VALVE
7 173090001-0001 1
PULL ROB
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MUFFLER
FUEL TANK
Item Stock # Description Qty
1 170870112-0001 CAP COMP., FUEL FILLER 1
2 380370048-0001 NUT, FLANGE 1
3 380450444-0002 WASHER 1
4 170490136-0001 FUEL TANK COMP. 1
5 380140013-0005 BOLT, FLANGE 1
6 380850003-0001 BOLT, STUD 1
7 170010017-0001 STRAINER, FUEL 1
8 380940346-0001 CABLE CLEAT 1
9 380750425-0001 TUBE, FUEL 1
10 380960120-0004 LOOP, TUBE 2
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TWO (2) YEARS LIMITED WARRANTY
PowerSmart is committed to building equipment that will provide years of dependable service. Our warranties are
consistent with our commitment and dedication to quality.
TWO (2) YEARS LIMITED WARRANTY OF POWER SMART PRODUCTS FOR HOME USE.
PowerSmart (“Seller") warrants to the original purchaser only, that all PowerSmart consumer power tools will be
free from defects in material or workmanship for a period of two (2) years from date of purchase. If the tool(s) is
used while providing professional or commercial services, the warranty coverage shall be for a maximum of (90)
days.
SELLER’S SOLE OBLIGATION AND YOUR EXCLUSIVE REMEDY under this Two (2) Years Limited
Warranty and, to the extent permitted by law, any warranty or condition implied by law, shall be the re¬pair or
replacement of parts, without charge, which are defective in material or workmanship and which have not been
misused, carelessly handled, or improperly repaired, by person(s) other than an Authorized Seller or Service
Center.
Please be aware that normal wear parts are not covered this warranty. This includes drive belts, blades and grass
bags. Carburetor issues, and/or other damage found to be the result of stale, contaminated or compromised fuel, is
not covered under this limited warranty.
To make a claim under this Limited Warranty, you must return the entire power tool product; transportation
prepaid, to PowerSmart. The owner must include a legible copy of the original receipt, which shall list the date of
purchase, along with the company’s name where the product was purchased.
THIS LIMITED WARRANTY DOES NOT APPLY TO ANY ACCESSORY ITEMS INCLUDED WITH THE
TOOL SUCH AS CIRCULAR SAW BLADES OTHER RELATED ITEMS OR TO ANY REPLACEMENT
PARTS LISTED UNDER MAINTENANCE.
ANY IMPLIED WARRANTIES SHALL BE LIMITED IN DURATION TO TWO (2) YEARS FROM DATE OF
PURCHASE. SOME STATES IN THE U.S. AND SOME CANADIAN PROVINCES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY
NOT APPLY TO YOU.
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE
OTHER RIGHTS WHICH VARY FROM STATE TO STATE IN THE U.S., PROVINCE TO PROVINCE IN
CANADA AND FROM COUNTRY TO COUNTRY.
Please call toll free at: 1-800-791-9458 (M-F 9am – 5pm CST)
Email: support@amerisuninc.com
PLEASE SAVE ALL OF YOUR ORIGINAL RECEIPTS. THIS WARRANTY IS VOID WITHOUT THEM.
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