LONCIN LC1P61FA User manual

The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other re
p
roductive harm.
The safety alert symbol ()is used to identify safety information about hazards that can
result in personal injury.
A signal word (WARNING,DANGER, or CAUTION) is used with the alert symbol to indicate the
likelihood and the potential severity of injury. In addition, a hazard symbol may be used to
represent the type of hazard.
WARNING indicates a hazard which, if not avoided, will result in death or serious
injury.
DANGER indicates a hazard which, if not avoided, could result in death or serious
injury.
CAUTION indicates a hazard which, if not avoided, might result in minor or moderate
injury.
When used without the alert symbol, indicates a situation that could result in damage to
the engine.
CAUTION: We are not necessarily know what equipment this engine will power. For that
reason, you should carefully read and understand the operating instructions for the equipment on
which your engine is placed.
BEFORE OPERATING ENGINE
zRead entire Operating ＆Maintenance Instructions AND
the instructions for the equipment this engine powers.
zFailure to follow instructions could result in serious injury
or death.
THE OPERATING ＆MAINTENANCE INSTRUCTIONS CONTAIN
SAFETY INFORMATION TO
zMake you aware of hazards associated with engines
zInform you of the risk of injury associated with those hazards,and
zTell you how to avoid or reduce the risk of injury.
THE INTERNATIONAL SYMBOLS USED ON
THE ENGINE OR IN THIS MANUAL INCLUDE:
WARNING

HAZARD SYMBOLS AND MEANINGS

CONTENTS
1
CONTENTS
1. ENGINE SAFETY ………………………………………………………………………………… 2
2. COMPONENTS & CONTROL LOCATIONS …………………………………………………… 5
3. CONTROLS ………………………………………………………………………………………… 7
4. MAINTENANCE ………………………………………………………………………………… 10
5. STORAGE/TRANSPORTING …………………………………………………………………… 14
6. TROUBLESHOOTING …………………………………………………………………………… 17
7. TECHNICAL & CONSUMER INFORMATION ………………………………………………… 18
8. SPECIFICATIONS………………………………………………………………………………… 19

ENGINE SAFETY
2
1. ENGINE SAFETY
IMPORTANT SAFETY INFORMATION
Most accidents with engines can be prevented if you follow all 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
zThe engines are designed to give 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.
zKnow how to stop the engine quickly, and understand the operation of all controls. Never
permit anyone to operate the engine without proper instructions.
zDo not allow children to operate the engine. Keep children and pets away from the area of
operation.
Gasoline and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or death.
WHEN ADDING FUEL
zTurn engine OFF and let engine cool at least 2 minutes before removing gas cap.
zFill fuel tank outdoors or in well-ventilated area.
zDo not overfill fuel tank. Fill tank to approximately 1-1/2 inches below top of neck to
allow for fuel expansion.
zKeep gasoline away from sparks, open flames, pilot lights, heat, and other ignition
sources.
zCheck fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if
necessary.
WHEN STARTING ENGINE
zMake sure spark plug, muffler, fuel cap and air cleaner are in place.
zDo not crank engine with spark plug removed.
zIf fuel spills, wait until it evaporates before starting engine.
zIf engine floods, set choke to OPEN/RUN position, place throttle in FAST and crank
until engine starts.
WHEN OPERATING EQUIPMENT
zDo not tip engine or equipment at angle which causes gasoline to spill.
zDo not choke carburetor to stop engine.
WHEN TRANSPORTING EQUIPMENT
zTransport with fuel tank EMPTY or with fuel shut-off valve OFF
WHEN STORING GASOLINE OR EQUIPMENT WITH FUEL IN TANK
zStore away from furnaces, stoves, water heaters or other appliances that have pilot
light or other ignition source because they can ignite gasoline vapors.
WARNING

ENGINE SAFETY
3
Starting engine creates sparking.
Sparking can ignite nearby flammable gases.
Explosion and fire could result.
zIf there is natural or gas leakage in area, do not start engine.
zDo not use pressurized starting fluids because vapors are flammable.
Rapid retraction of starter cord (kickback) will pull hand and
arm toward engine faster than you can let go.
Broken bones, fractures, bruises or sprains could result.
zWhen starting engine, pull cord slowly until resistance is felt, then pull rapidly.
zRemove all external equipment/engine loads before starting engine.
zDirect coupled equipment components such as, but not limited to, blades, impellors,
pulleys, sprockets, etc., must be securely attached.
Engines give off carbon monoxide, an odorless, colorless,
poison gas.
Broken bones, fractures, bruises or sprains could result.
zStart and run engine outdoors.
zDo not start or run engine enclosed area, even if doors or windows are open.
Rotating parts can contact or entangle hands, feet, hair, clothing
,
or accessories.
Traumatic amputation or severe laceration can result.
zOperate equipment with guards in place.
zKeep hands and feet away from rotating parts.
zTie up long hair and remove jewelry.
zDo not wear loose-fitting clothing, dangling drawstrings or items that could become
caught.
WARNING
WARNING
WARNING
WARNING

ENGINE SAFETY
4
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.
zAllow muffler, engine cylinder and fins to cool before touching.
zRemove accumulated combustibles from muffler area and cylinder area.
Unintentional sparking can result in fire or electric
shock.
Unintentional start-up can result in entanglement,
traumatic amputation, or laceration.
BEFORE PERFORMING ADJUSTMENTS OR REPAIRS
zDisconnect spark plug wire and keep it away from spark plug.
zDisconnect battery at negative terminal (only engines with electric start).
WHEN TESTING FOR SPARK
zUse approved spark plug tester.
zDo not check for spark with spark plug removed.
WARNING
WARNING

COMPONENTS&CONTROLLOCATIONS
5
2. COMPONENTS & CONTROL LOCATIONS
1P61FA、1P65FA、1P68FA、1P70F、1P70FA
1P61FA、1P65FA
SPARK PLUG
AIR CLEANER
FUEL TANK CAP
STARTER GRIP
MUFFLER
OIL FILLER CAP/
DISPTIC
K
AIR CLEANER
FUEL TANK
FUEL TANK CAP
SPARK PLUG
CARBURETOR
CARBURETOR
FUEL TANK
MUFFLER
STARTER GRIP
OIL FILLERCAP/
DISPTICK

COMPONENTS&CONTROLLOCATIONS
6
1P65FE
STARTER GRIP FUEL TANK
CARBURETOR
AIR CLEANER
SPARK PLUG
OIL FILLERCAP/
DISPTICK
FUEL TANK CAP
MUFFLER

CONTROLS
7
3. CONTROLS
3.1 ENGINE OIL
ENGINE OIL RECOMMENDATIONS
Oil is a major factor affecting performance and service life. Use 4-stroke automotive detergent
oil.
SAE 10W-30 is recommended for general use. Other viscosities shown in the chart may be used
when the average temperature in your area is within the recommended range.
SAE Viscosity Grades
AMBIENT TEMPERATURE
The SAE oil viscosity and service classification are in the API label on the oil container. We
recommend that you use API SERVICE Category SE or SF oil.
CAUTION: This engine is shipped from factory without oil. Check oil level before starting
engine. If you start the engine without oil, the engine will be damaged beyond repair and will not
be covered under warranty.
zCheck the engine oil level with the engine stopped and in a level position.
zRemove the oil filler cap/dipstick and wipe it clean.
zInsert the oil filler cap/dipstick into the oil filler neck as shown, but do not screw it in, then
remove it to check the oil level.
zIf the oil level is near or below the lower limit mark on the dipstick, fill with the recommended
oil to the upper limit mark. Do not overfill.
zReinstall the oil filler cap/dipstick.
1P61FA、1P65FA、1P68FA、1P70F、1P70FA
OIL FILLER CAP/DIPSTICK
UPPER
LOWER

CONTROLS
8
OIL FILLER CAP/DIPSTICK
1P65FE
Engine oil capacities: 1P61FA、1P65FA : 0.55L (0.146 US Gal, 0.119 Imp Gal)
1P65FE : 0.5L (0.133 US Gal, 0.108 Imp Gal)
1P68FA、1P70F、1P70FA : 0.60L (0.16 US Gal, 0.13 Imp Gal)
CAUTION:
Do not overfill. Overfilling with oil may cause:
Smoking, Hard starting, Spark plug fouling, or Oil saturation of air filter.
Used oil should be sent to special recycle bin for disposing.
3.2 FUEL
FUEL RECOMMENDATIONS
Use clean, fresh, regular unleaded gasoline with a minimum of 85 octane.
zThese engines are certified to operate on unleaded gasoline. Unleaded gasoline produces
fewer engine and spark plug deposits and extends exhaust system life.
zNever use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt or
water in the fuel tank.
zOccasionally you may hear a light ‘‘spark knock’’ or ‘‘pinging’’ (metallic rapping noise) while
operating under heavy loads. This is no cause for concern.
zIf spark knock or pinging occurs at a steady engine speed, under normal load, change
brands of gasoline. If spark knock or pinging persists, see an authorized servicing dealer.
Fuel tank capacity:
1P61FA、1P65FA、1P68FA、1P70F、1P70FA: 1L (0.267 US Gal, 0.222 Imp Gal)
1P65FE: 0.9L(0.24 US Gal，0.2 Imp Gal)
DANGER: Gasoline and its vapors are extremely flammable and explosive.
zDo not use pressurized starting fluids.
zVapors are flammable.
WARNING
LOWER
UPPER

CONTROLS
9
3.3 STARTING ENGINE
3.3.1 Control Lever
zFOR STARTING A COLD ENGINE: Move the Control
Lever to the choke position.
zFOR RESTARTING A WARM ENGINE: Do not use the
choke when the engine is warm. Move the control Level
slightly past the idle position.
zFLYWHEEL BRAKE MODELS: Move the flywheel brake
lever (located on equipment) to release the flywheel
brake.
3.3.2 Start Engine
zGrasp rope handle. Pull slowly until resistance is felt, then pull rapidly to start engine and
avoid kickback.
zIf the choke was used to start the engine, move the throttle to the fast (or high) position as
soon as the engine warms up enough to run smoothly without use of the choke.
zFLYWHEEL BRAKE MODELS: Continue to hold the flywheel brake lever (located on
equipment). The engine will stop if you release the flywheel brake lever.
zPosition the control Level for the desired engine speed. For best engine performance, it is
recommended the engine be operated with the throttle in the FAST (or high) position.
z
If using air pump carburetor，because there is no
throttle rod, so press AIR PUMP one time to 3
times according to the direction of the arrow when
coldstart, then start it.
CAUTION: Carefully check if there is
enough oil before starting.
DANGER: Rapid retraction of starter cord
(kickback) will pull hand and arm toward engine
faster than you can let go.
Rotating parts can contact or entangle hands, feet,
hair, clothing, or accessories.
Running engines produce heat. Engine parts,
especially muffler, become extremely hot.
Severe thermal burns can occur on contact.
3.4 STOPPING ENGINE
1. Move the Control Level to the slow (IDLE) position.
2. Move the Control Level to the stop position.
3. FLYWHEEL BRAKE MODELS: Release the flywheel brake lever (located on equipment) to
stop the engine.
4. Turn the fuel valve to the OFF position if you do not intend to restart the engine soon.
AIR PUMP AIR CLEANER
STOP IDLE FAST CHOKE

MAINTENANCE
10
4. MAINTENANCE
THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-free operation. It will also help
reduce air pollution.
MAINTENANCE SAFETY
Regular maintenance will improve the performance and extend the life of the engine.
Safety Precautions
zMake sure the engine is off before you begin any maintenance or repairs. This will
eliminate several potential hazards:
Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate the engine.
Burns from hot parts.
Let the engine and exhaust system cool before touching.
Injury from moving parts.
Do not run the engine unless instructed to do so.
zRead the instructions before you begin, and make sure you have the tools and skills
required.
zTo reduce the possibility of fire or explosion, be careful when working around gasoline.
Use only a nonflammable solvent, not gasoline, to clean parts. Keep cigarettes, sparks and
flames away from all fuel-related parts.
To ensure the best quality and reliability, use only new, genuine parts or their equivalents for
repair and replacement.
MAINTENANCE SCHEDULE
☆Replace the paper element type only.
Improperly maintaining this engine, or failure to correct a problem before operation,
can cause a malfunction in which you can be seriously hurt or killed.
Always follow the inspection and maintenance recommendations and schedules in this
owner’s manual.
WARNING
Failure to properly follow maintenance instructions and precautions can cause you to
be seriously hurt or killed.
Always follow the procedures and precautions in the owner’s manual.
WARNING

MAINTENANCE
11
(1) Change engine oil every 25 hours when used under heavy load or in high ambient
temperatures.
(2) Clean more often under dusty conditions or when airborne debris is present. Replace air
cleaner parts, if very dirty.
(3) These items should be serviced by your servicing dealer unless you have the proper tools
and are mechanically proficient. Refer to manual for service procedures.
Failure to follow this maintenance schedule could result in nonwarrantable failures.
CAUTION: Used oil is a hazardous waste product. Dispose of used oil properly. Do not
discard with household waste. We suggest you take used oil in a sealed container to your local
recycling center or service station for reclamation.
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.
Running the engine with a low oil level can cause engine damage.
REGULAR SERVICE PERIOD
Performed at every indicated
month or operating hour interval,
whichever comes first.
ITEM
Before
Each use
First
month or
5 Hrs.
Every 3
months
or 25 Hrs.
Every 6
months
or 50 Hrs.
Every
year or
100 Hrs.
Check level ○
Engine oil
Change
○○(1)
Check ○
Clean
○(2)
Air cleaner
Replace
○☆
Check-Clean
○
Spark plug
Replace
○
Flywheel brake pad Check ○
Spark arrester
(optional parts) Clean
○
Idle speed Check-Adjust
○(3)
Valve clearance Check-Adjust
○(3)
Combustion
chamber Clean After every 100 Hrs. (3)
Fuel line Check Every 2 years (Replace if necessary) (3)

MAINTENANCE
12
1P61FA、1P65FA、1P68FA、1P70F、1P70FA 1P65FE
REFUELING
With the engine stopped, remove the fuel tank cap and check the fuel level. Refill the tank if the
fuel level is low.
Refuel in a well-ventilated area before starting the engine. If the engine has been running, allow it
to cool. Refuel carefully to avoid spilling fuel. Do not fill above the fuel strainer shoulder. After
refueling, tighten the fuel tank cap securely.
Never refuel the engine inside a building where gasoline fumes may reach flames or sparks.
Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools, etc.
Spilled fuel isn’t only a fire hazard, it causes environmental damage. Wipe up spills immediately.
CAUTION: Fuel can damage paint and plastic. Be careful not to spill fuel when filling
your fuel tank. Damage caused by spilled fuel is not covered under warranty.
AIR CLEANER
Remove the air cleaner cover and inspect the filter. Clean or replace dirty filter elements. Always
replace damaged filter elements. If equipped with an oil-bath air cleaner, also check the oil level.
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.
OIL FILLER
CAP/DIPSTICK
OIL FILLER
CAP/DIPSTICK
SEALING WASHER
DRAIN BOLT

MAINTENANCE
13
AIR CLEANER
COVER
FILTER
AIR CLEANER
BODY LATCH TABS
FILTER, OUTER
INSPECTION
1. Press the latch tabs on the air cleaner cover or remove the cap nuts, and remove the
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 filter several times on a hard surface to remove dirt, or blow compressed air(not
exceeding 30 psi [207kPa, 2.1kg/cm²])through the filter from the clean side that faces the
engine. Never try to brush off dirt. Brushing will force dirt into the fibers.
2. Tap the filter outer several times on a hard surface to remove dirt Clean. If the filter outer
is very dirty, replace the filter outer.
3. Wipe dirt from the air cleaner body and cover using a moist rag. Be careful to prevent dirt
from entering the air duct that leads to the carburetor.
CAUTION: Operating the engine without an air filter, or with a damaged air filter, will allow
dirt to enter the engine, causing rapid engine wear. This type of damage is not covered by the
Distributor’s Limited Warranty.
SPARK PLUG SERVICE
Recommended spark plugs: F7RTC 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.
0.028-0.031 in
(0.70-0.80 mm)

STORAGE/ TRANSPORTING
14
4. if the insulator is cracked or chipped.
5. Measure the spark plug electrode gap with a suitable gauge.
The gap should be 0.028 - 0.031 in (0.70 - 0.80 mm). Correct
the gap, if necessary, by carefully bending the side electrode.
6. Install the spark plug carefully, by hand, to avoid cross-threading.
7. 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.
8. Attach the spark plug cap.
5. STORAGE/ TRANSPORTING
STORING YOUR ENGINE
Storage Preparation
Proper storage preparation is essential for keeping your engine trouble free and looking good.
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.
Fuel
Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting, and it
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 gasoline 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 Distributor’s Limited Warranty does not cover fuel system damage or engine performance
problems resulting from neglected storage preparation.
You can extend fuel storage life by adding a fuel stabilizer that is formulated for that purpose, or

STORAGE/ TRANSPORTING
15
you can avoid fuel deterioration problems by draining the fuel tank and carburetor.
ADDING A FUEL STABILIZER TO EXTEND FUEL STORAGE LIFE
When adding a fuel stabilizer, fill the fuel tank with fresh gasoline. If only partially filled, air in the
tank will promote fuel deterioration during storage. If you keep a container of gasoline for
refueling, be sure that it contains only fresh gasoline.
1. Add fuel stabilizer following the manufacturer’s instructions.
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.
3. Stop the engine, and move the fuel valve to the OFF position.
DRAINING THE FUEL TANK AND CARBURETOR
1. Place an approved gasoline
container below the carburetor,
and use a funnel to avoid spilling
fuel.
2. Remove the carburetor drain bolt
and sealing washer, and then
move the fuel valve lever to the ON
position.
3. After all the fuel has drain into the
container, reinstall the drain bolt
and sealing washer. Tighten them
securely.
Storage Precautions
1. Change 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.
If your engine will be stored with gasoline in the fuel tank and carburetor, it is important to reduce
the hazard of gasoline vapor ignition. Select a well-ventilated storage area away from any
appliance that operates with a flame, such as a furnace, water heater, or clothes dryer. Also
avoid any area with a spark-producing electric motor, or where power tools are operated.
If possible, avoid storage areas with high humidity, because that promotes rust and corrosion.
CARBURETOR
FLOAT BOWL
SEALING WASHER
DRAIN BOLT

STORAGE/ TRANSPORTING
16
Unless all fuel has been drained from the fuel tank, leave the fuel valve lever in the OFF position
to reduce the possibility of fuel leakage.
Position the equipment so the engine is level. Tilting can cause fuel or oil leakage.
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 equipped with a battery for an electric starter, recharge the battery once a month while the
engine is in storage. This will help to extend the service life of the battery.
Removal from Storage
Check your engine as described in the chapter OPERATION.
If the fuel was drained during storage preparation, fill the tank with fresh gasoline. If you keep a
container of gasoline for refueling, be sure that it contains only fresh gasoline. Gasoline oxidizes
and deteriorates over time, causing hard starting.
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, allow it to cool for at least 15 minutes before loading the
engine-powered equipment on the transport vehicle. A hot engine and exhaust system can burn
you and can ignite some materials.
Keep the engine level when transporting to reduce the possibility of fuel leakage. Move the fuel
valve lever to the OFF position.

TROUBLESHOOTING
17
6. TROUBLESHOOTING
ENGINE WILL NOT
START Possible Cause Correction
Choke OPEN. Move lever to CLOSE unless
engine is warm.
1. Check control
positions Engine switch OFF. Turn engine switch to ON.
Out of fuel. Refuel
2. Check fuel.
Bad fuel; engine stored
without treating or draining
gasoline, or refueled with bad
gasoline.
Drain fuel tank and carburetor.
Refuel with fresh gasoline.
Spark plugs faulty, fouled, or
improperly gapped. Gap, or replace spark plugs. 3. Remove and
inspect spark
plugs. Spark plugs wet with fuel
(flooded engine).
Dry and reinstall spark plugs.
Start engine with control lever
in FAST position.
4. Take engine to
an authorized
servicing dealer,
or refer to
manual.
Fuel filter clogged, carburetor
malfunction, ignition
malfunction, valve stuck, etc.
Replace or repair faulty
components as necessary.
ENGINE LACKS
POWER Possible Cause Correction
1. Check air filter Filter element(s) clogged. Clean or replace filter
element(s).
Out of fuel. Refuel
2. Check fuel.
Bad fuel; engine stored
without treating or draining
gasoline, or refueled with bad
gasoline.
Drain fuel tank and carburetor.
Refuel with fresh gasoline.
3. Take engine to
an authorized
servicing dealer,
or refer to
manual.
Fuel filter clogged, carburetor
malfunction, ignition
malfunction, valve stuck, etc.
Replace or repair faulty
components as necessary.
ENGINE
OPERATES
ERRATICALLY Possible Cause Correction
Spark plug is defective. Install new, correctly gapped
plug,
1. Check spark plug
Spark plug gap is incorrect. Set gap between electrodes at
0.7 to 0.8 mm.
2. Check air cleaner Air cleaner element is dirty. Clean air cleaner element.