Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
REV 15e
Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains carbon monoxide.
This is a poison you cannot see or smell.
NEVER use inside
a home or garage,
EVEN IF doors and
windows are open.
Only use OUTSIDE
and far away from
windows, doors,
and vents.
Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2013 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Table of Contents
Specifications ............................................. 2
Safety ......................................................... 3
Setup .......................................................... 6
Operation ................................................... 16
Specifications
Displacement 670cc
Engine Type
Cooling System Forced air cooled
Fuel Type
Engine Oil
Sound Level at 3 feet 88 dB
Bore x Stroke 78 mm x 70 mm
Compression Ratio 8.2:1
Rotation viewed from PTO
(power takeoff - the output shaft)
Spark Plugs
Valve Clearance
Speed Idle 1800 RPM
Type
Capacity 2 Quart
Type
Gap 0.7 - 0.8 mm
Intake 0.13 - 0.17 mm
Exhaust 0.18 - 0.22 mm
Shaft Ø1″ x 3.56″
Maintenance .............................................. 20
Troubleshooting ......................................... 24
Warranties ................................................. 26
Parts Lists and Diagrams .......................... 28
Horizontal/Vertical Double Cylinder
4-stroke
87+ octane stabilizer treated
unleaded gasoline
SAE 10W-30 above 32° F
SAE 5W30 at 32° F or below
Counterclockwise
NGK® BPR5ES
Torch® F5RTC
Shaft
The emissions control system for this Engine is warranted for standards set by the
U.S. Environmental Protection Agency and by the California Air Resources Board (also known as CARB).
For warranty information, refer to the last pages of this manual.
Page 2 For technical questions, please call 1-888-866-5797. ITEM 61614
Keyway 1/4″
End Tapped 3/8″ - 24 UNF
Symbol Definitions
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
SAFETYOPERATIONMAINTENANCE SETUP
Symbol Property or Statement
RPM
HP
Revolutions Per Minute
Horsepower
WARNING marking concerning
Risk of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking concerning
Risk of Hearing Loss.
Wear hearing protection.
Symbol Property or Statement
WARNING marking concerning
Risk of Respiratory Injury.
Operate engine OUTSIDE and far away
from windows, doors, and vents.
WARNING marking concerning
Risk of Fire while handling fuel.
Do not smoke while handling fuel.
WARNING marking concerning
Risk of Fire.
Do not refuel while operating.
Keep flammable objects
away from engine.
IMPORTANT SAFETY INSTRUCTIONS
WARNING! Read all instructions.
Failure to follow all instructions listed below may result in fire, serious injury and/or DEATH.
The warnings and precautions discussed in this manual cannot cover all possible conditions and
situations that may occur. It must be understood by the operator that common sense and caution
are factors which cannot be built into this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS
Page 3For technical questions, please call 1-888-866-5797.ITEM 61614
Set up Precautions
1. Gasoline fuel and fumes are flammable, and
potentially explosive. Use proper fuel storage
and handling procedures. Do not store fuel
SAFETY OPERATION MAINTENANCESETUP
or other flammable materials nearby.
2. Have multiple ABC class fire extinguishers nearby.
3. Operation of this equipment may create sparks that
can start fires around dry vegetation.
A spark arrestor may be required. The operator
should contact local fire agencies for laws or
regulations relating to fire prevention requirements.
Operating Precautions
1. CARBON MONOXIDE HAZARD
Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains
carbon monoxide. This is a poison
you cannot see or smell.
NEVER use inside a home or garage,
EVEN IF doors and windows are open.
Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.
3. Keep all spectators at least six feet
from the Engine during operation.
4. Fire Hazard! Do not fill fuel tank while engine is
running. Do not operate if gasoline has been spilled.
Clean spilled gasoline before starting engine.
Do not operate near pilot light or open flame.
5. Do not touch engine during use.
Let engine cool down after use.
6. Never store fuel or other flammable
materials near the engine.
7. Only use a suitable means of transport and
lifting devices with sufficient weight bearing
capacity when transporting the engine.
8. Secure the engine on transport vehicles to
prevent it from rolling, slipping, and tilting.
4. Set up and use only on a flat, level,
well-ventilated surface.
5. Wear ANSI-approved safety goggles, heavy-duty
work gloves, and dust mask/respirator during set up.
6. Use only lubricants and fuel recommended
in the Specifications chart of this manual.
7. Fuel tank must be designed specifically for
containing gasoline and must be mounted to a
stable mounting frame. Some areas may have
specific gasoline vapor containment requirements;
comply with local, state, and federal laws.
9. Industrial applications must follow
OSHA requirements.
10. Do not leave the engine unattended when it is
running. Turn off the engine (and remove safety
keys, if available) before leaving the work area.
11. The engine can produce high noise levels.
Prolonged exposure to noise levels
above 85 dBA is hazardous to hearing.
Wear ear protection when operating the engine
or when working nearby while it is operating.
12. Wear ANSI-approved safety glasses
and hearing protection during use.
13. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to a heart pacemaker could cause
pacemaker interference or pacemaker failure.
Caution is necessary when near the
engine’s magneto or recoil starter.
14. Use only accessories that are recommended
by Harbor Freight Tools for your model.
Accessories that may be suitable for one
piece of equipment may become hazardous
when used on another piece of equipment.
15. Do not operate in explosive atmospheres,
such as in the presence of flammable
liquids, gases, or dust. Gasoline-powered
engines may ignite the dust or fumes.
16. Stay alert, watch what you are doing and use
common sense when operating this engine.
Do not use while tired or under the influence
of drugs, alcohol or medication.
17. Dress properly. Do not wear loose clothing or
jewelry. Keep hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.
18. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
19. Do not cover the engine during operation.
20. Keep the engine and surrounding
area clean at all times.
Page 4 For technical questions, please call 1-888-866-5797. ITEM 61614
21. Use the equipment, accessories, etc., in
accordance with these instructions and in the
manner intended for the particular type of
equipment, taking into account the working
conditions and the work to be performed.
Use of the equipment for operations different from
those intended could result in a hazardous situation.
22. Do not operate the equipment with known
leaks in the engine’s fuel system.
23. WARNING: This product contains or, when
used, produces a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
Service Precautions
24. When spills of fuel or oil occur, they must be
cleaned up immediately. Dispose of fluids and
cleaning materials as per any local, state, or
federal codes and regulations. Store oil rags in
a bottom-ventilated, covered, metal container.
25. Keep hands and feet away from moving parts.
Do not reach over or across
equipment while operating.
26. Before use, check for misalignment or binding of
moving parts, breakage of parts, and any other
condition that may affect the equipment’s operation.
If damaged, have the equipment serviced
before using. Many accidents are caused
by poorly maintained equipment.
27. Use the correct equipment for the application.
Do not modify the equipment and do not use the
equipment for a purpose for which it is not intended.
SAFETYOPERATIONMAINTENANCE SETUP
1. Before service, maintenance, or cleaning:
a. Turn the engine switch to its “OFF” position.
b. Allow the engine to completely cool.
c. Then, remove the spark plug caps
from the spark plugs.
2. Keep all safety guards in place and in
proper working order. Safety guards include
muffler, air cleaner, mechanical guards,
and heat shields, among other guards.
3. Do not alter or adjust any part of the
equipment or its engine that is sealed by the
manufacturer or distributor. Only a qualified
service technician may adjust parts that may
increase or decrease governed engine speed.
4. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and
dust mask/respirator during service.
5. Maintain labels and nameplates on the equipment.
These carry important information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. Have the equipment serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the equipment
is maintained. Do not attempt any service or
maintenance procedures not explained in this
manual or any procedures that you are uncertain
about your ability to perform safely or correctly.
7. Store equipment out of the reach of children.
8. Follow scheduled engine and
equipment maintenance.
Refueling:
1. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
2. Do not refill the fuel tank while the
engine is running or hot.
3. Do not fill fuel tank to the top.
Leave a little room for the fuel to expand as needed.
4. Refuel in a well-ventilated area only.
5. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.
SAVE THESE INSTRUCTIONS.
Page 5For technical questions, please call 1-888-866-5797.ITEM 61614
Set Up
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.
SAFETY OPERATION MAINTENANCESETUP
TO PREVENT SERIOUS INJURY:
Operate only with proper spark arrestor installed.
Operation of this equipment may create sparks that can start fires around dry vegetation.
A spark arrestor may be required.
The operator should contact local fire agencies for laws or regulations
relating to fire prevention requirements.
WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE.
WARNING! INSTALL THIS ENGINE ACCORDING TO EQUIPMENT INSTRUCTIONS BEFORE USE.
WARNING! If you do not connect a battery to the positive battery cable,
wrap its terminal securely with electrical tape (sold separately).
Page 6 For technical questions, please call 1-888-866-5797. ITEM 61614
Components and Controls
Lifting
Bracket
Spark Plug
(1 of 2)
Oil Fill
Plug
Muffler
SAFETYOPERATIONMAINTENANCE SETUP
Dipstick
Lifting
Bracket
Spark Plug
(2 of 2)
Radiator
Starter
Air Cleaner
Choke
Switch
Throttle
Circuit
Breaker
Page 7For technical questions, please call 1-888-866-5797.ITEM 61614
High Altitude Operation Above 3000 feet
WARNING! TO PREVENT SERIOUS INJURY FROM FIRE:
Follow instructions in a well-ventilated area away from ignition sources.
If the engine is hot from use, shut the engine off and wait for it to cool before proceeding. Do not smoke.
SAFETY OPERATION MAINTENANCESETUP
NOTICE: Warranty void if necessary adjustments are not made for high altitude use.
At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that control the fuel-air
ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude use and to prevent damage
to the engine and any other devices used with this product. The fuel system on this engine may be influenced by
operation at higher altitudes. Proper operation can be ensured by installing an altitude kit at altitudes higher than
3000 ft. above sea level. At elevations above 8000 ft, the engine may experience decreased performance, even
with the proper main jet. Operating this engine without the proper altitude kit installed may increase the engine’s
emissions and decrease fuel economy and performance. The kit should be installed by a qualified mechanic.
High Altitude Kit Parts List - A
Part Description Qty
A1 Left Main Jet 3000-6000 ft. 1
A2 Right Main Jet 3000-6000 ft. 1
A3 Left Main Jet 6000-8000 ft. 1
Disassembly
1. Turn off the engine.
2. Close the fuel valve, if equipped.
If no fuel valve is equipped, then clamp
the fuel hose closed right before the filter.
Be careful to avoid damaging the fuel hose.
3. Remove the Air Cleaner Top Knob (142a) and the
two Air Cleaner Front Knobs (102). See Figure A.
Air Cleaner
Top Knob (142a)
Air Cleaner
Front Knob
(102)
Part Description Qty
A4 Right Main Jet 6000-8000 ft. 1
137d Outer Bowl O-ring (replacement) 2
137e Inner Bowl O-ring (replacement) 2
4. Remove the Air Cleaner Front Cover (101),
pulling it up then out. See Figure B.
Air Cleaner
Front Cover (101)
Figure B: Remove Front Cover
Figure A: Remove Knobs
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5. Remove the Air Cleaner Top Cover (142b) and
internal Air Cleaner components
(Spacer, Foam and Paper Filters (142c-142e)).
See Figure C.
9. Remove the four Shroud Nuts (99) and the two
Flange Shoulder Bolts (112) from the Shroud (100).
The Flange Shoulder Bolt on the right holds the
Lifting Bracket (111) in place. See Figure E.
Air Cleaner
Top Cover
(142b)
Air Cleaner
Spacer (142c)
Foam Air
Filter (142d)
Paper Air
Filter (142e)
Figure C: Remove Air Cleaner
Top Cover and components
6. Remove the two Intake Cover Bolts (143) and the
two Air Cleaner Base Bolts (146). See Figure D.
7. Detach the top of the Fuel Filter Clip (147)
from the Air Cleaner Base (142g).
Flange
Shoulder
Bolt (112)
Shroud
Nuts (99)
Note: Air Cleaner Front Cover is still shown,
although it should have been removed in step 4.
Figure E: Remove Shroud
10. Remove the Shroud.
Flange Shoulder
Bolt (112)
behind Lifting Bracket
SAFETYOPERATIONMAINTENANCE SETUP
Shroud (100)
Intake Cover
Bolts (143)
Fuel Filter
Clip (147)
Figure D: Remove Bolts and Clip
from Air Cleaner Base
8. Remove the Air Cleaner Base.
Air Cleaner
Base Bolts
(146)
Air Cleaner
Base (142g)
Page 9For technical questions, please call 1-888-866-5797.ITEM 61614
11. WARNING! TO PREVENT SERIOUS INJURY FROM FIRE, BEFORE CONTINUING:
a. Make sure that the work area is well-ventilated and that there are no ignition sources.
b. Have multiple class ABC fire extinguishers available.
c. Double-check that fuel hose leading from fuel tank to Fuel Filter is clamped or fuel valve is closed.
SAFETY OPERATION MAINTENANCESETUP
d. Use a safe, proper means to clean up all fuel spills immediately.
12. Squeeze the Spring Clamp (140) and slide it back.
Detach the Fuel Hose (141) from the port at
the top of the Carburetor. See Figure F.
Spring
Clamp (140)
Fuel
Hose (141)
15. Disconnect the Throttle Rod Spring
from the Throttle Rod Clip.
16. Squeeze the Spring Wire Clamp (32) and slide
it back. Detach the Breather Hose (33) from
the right side of the Carburetor. See Figure I.
Spring Wire
Clamp (32)
fuel
port
Figure F: Detach Fuel Hose
13. Locate the Throttle Rod (174) connection on
the left side of the carburetor. See Figure G.
Throttle
Rod (174)
Throttle Rod
Spring (175)
Throttle Rod
Clip (139)
Figure G: Disconnect Throttle Rod
14. A: Swing the black Throttle Rod Clip (139) down
to release the Throttle Rod. See Figure H.
B: Pull the Throttle Rod out of the Clip.
Breather
Hose (33)
Figure I: Detach Breather Hose
17. Locate the Choke Rod (177) connection on the
right side of the carburetor. See Figure J.
Choke Rod
Clip (176)
Choke
Rod (177)
Figure J: Disconnect Choke Rod
18. Swing the black Choke Rod Clip (176) aside to
release the Choke Rod. Disconnect the Choke Rod.
B
A
Figure H: Throttle Rod Clip
Page 10 For technical questions, please call 1-888-866-5797. ITEM 61614
19. At the front of the Carburetor,
remove the Bolt (38) holding the
Fuel Pump Bracket (40) in place. See Figure K.
20. Underneath where the Fuel Pump Bracket was,
the Solenoid Valve (138) is connected.
Note the location of the green wire and green dot on
the connector. Unplug the connector. See Figure L.
Fuel Pump
Bracket (40)
Bolt (38)
Figure K: Remove Fuel Pump Bracket
Carburetor
Intake Elbow
(131)
Bolt
(132)
Solenoid wire
connector
Figure L: Disconnect Solenoid Valve wire connector
21. Remove Bolt (133) and two Bolts (132) from the
Carburetor Intake Elbow (131). See Figure L.
22. Remove the Carburetor assembly from the engine.
Keep it upright, it may contain fuel.
Bolt (133)
Bolt
(132)
Note location
of dots here.
SAFETYOPERATIONMAINTENANCE SETUP
Page 11For technical questions, please call 1-888-866-5797.ITEM 61614
23. Hold the fuel drain port over a bowl, and open the
Carburetor Drain Plug (137a) to allow fuel to drain
out of that port. Once the carburetor is empty,
close the Carburetor Drain Plug. See Figure M.
SAFETY OPERATION MAINTENANCESETUP
26. Use a carburetor screwdriver (sold separately)
to remove the Left Main Jet and replace it with
the proper replacement Left Main Jet (A1 or A3)
for the altitude. See Figure O.
27. Use a carburetor screwdriver to remove the
Right Main Jet and replace it with the replacement
Right Main Jet (A2 or A4) for the same altitude
as the Left Main Jet. See Figure O.
fuel
drain
port
Figure M: Carburetor Drain
24. Turn the Carburetor assembly over.
25. Remove the four Carburetor Bowl Bolts (137b) and
remove the Carburetor Bowl (137c). See Figure N.
Carburetor
Bowl Bolt
(137b)
Carburetor
Bowl
(137c)
Carburetor
Drain Plug
(137a)
Carburetor
Bowl Bolt
(137b)
Right
Main Jet
(A2/A4)
Note: Since carburetor is upside-down,
left and right sides are reversed.
Figure O: Main Jets
Left
Main Jet
(A1/A3)
Carburetor
Bowl Bolt
(137b)
Figure N: Carburetor Bowl Bolts
Page 12 For technical questions, please call 1-888-866-5797. ITEM 61614
Carburetor
Bowl Bolt
(137b)
Reassembly
Note: Reassembly step references shown in brackets.
1. Replace the Outer and Inner Bowl O-rings
(137d, 137e) with the replacements
from the altitude kit. Do not reuse existing O-rings.
Inner Bowl
O-ring
Outer Bowl
O-ring
Carburetor
Bowl
Figure P: Replace Bowl O-rings
2. Assemble the Carburetor Bowl using four
Carburetor Bowl Bolts. [#25] Assemble Carburetor
Intake Elbow to Intake using Bolts. [#21]
3. Attach Solenoid Valve connector, line up green
wire with the green dot on the connector. [#20]
4. Attach Fuel Pump Bracket to front of intake
using Bolt. Gently lift the Bracket after
assembly to ensure proper alignment. [#19]
5. Attach the Choke Rod on the right side of the
Carburetor, and secure it with its Clip. [#17,18]
6. Attach the Breather Hose to the Carburetor,
and secure it with its Clamp. [#16]
7. Attach the Throttle Rod Spring to the Throttle Rod
Clip on the left side of the Carburetor. [#15]
8. Insert the Throttle Rod on the left side of the
Carburetor, and secure it with its Clip. [#14]
9. Attach the Fuel Hose to the port at the top of the
Carburetor and attach it using its Clamp. [#12]
10. Install Shroud using four Shroud Bolts and two
Flange Shoulder Bolts. [#9,10] Include the Lifting
Bracket in place on the right Flange Shoulder Bolt.
11. Install Air Cleaner Base using two Air Cleaner Base
Bolts. Connect Fuel Filter Clip under left side of
Air Cleaner Base. Install the Intake Cover and
Intake Screen using the Intake Cover Bolts. [#6-8]
12. Place the Paper Air Filter, Foam Air Filter,
Air Cleaner Spacer, and Air Cleaner Top Cover
into place on the Air Cleaner Base. [#5]
13. Replace the Air Cleaner Front Cover. [#4]
14. Use the Air Cleaner Top Knob and Air Cleaner
Front Knobs to secure the Covers in place. [#3]
15. Once all connections are secure,
open fuel valve/unclamp fuel hose.
16. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.
SAFETYOPERATIONMAINTENANCE SETUP
Page 13For technical questions, please call 1-888-866-5797.ITEM 61614
Battery Setup Instructions
1. Place a fully charged, lead-acid 12 volt,
36 Ah battery (not included) in a stable,
flat location near the engine.
SAFETY OPERATION MAINTENANCESETUP
2. Only use cables sized to match
their length according to .
Cable Gauge
(lower gauge numbers
mean thicker cables)
6 5′
4 7′
2 12′
Table A: Minimum Cable Diameters
3. Attach the positive cable from the positive battery
terminal to the outer terminal on the Starter’s (164)
solenoid, see Figure Q and Figure R. Connect cable
securely to prevent disconnection and short circuits.
4. Attach the negative cable to the
negative battery terminal.
Maximum
Cable Length
solenoid on
Starter (164)
red wire
to positive
battery cable
connect negative
battery cable to
a mounting bolt
Figure Q: Battery Cable Connections
Connect Cable
from Positive
Battery
Terminal to
this Starter
Terminal
5. Connect the negative cable securely to one
of the engine mounting bolts, as shown
in Figure Q. Connect cable securely to
prevent disconnection and short circuits.
6. Coat the terminals and cable ends with
a corrosion-preventive coating.
Figure R: Connect Positive to this Terminal
Page 14 For technical questions, please call 1-888-866-5797. ITEM 61614
Fuel Tank Setup Instructions
1. If possible, incorporate a fuel shutoff valve
on the fuel hose (neither included).
2. WARNING! Fuel tank (not included) must be
designed specifically for containing gasoline and
must be mounted to a stable mounting frame.
Some areas may have specific
gasoline vapor containment requirements;
comply with local, state, and federal laws.
3. Connect a fuel hose from the fuel tank to the
exposed port of the Fuel Filter, and secure it
in place with a hose clamp. See Figure S.
SAFETYOPERATIONMAINTENANCE SETUP
fuel hose
connection
Figure S: Fuel Hose Connector
Page 15For technical questions, please call 1-888-866-5797.ITEM 61614
Operation
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.
SAFETY OPERATION MAINTENANCESETUP
Pre-Start Checks
Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting.
If any problems are found, do not use equipment until fixed properly.
Checking and Filling Engine Oil
NOTICE: Your Warranty is VOID if the engine’s
crankcase is not properly filled with oil before
each use. Before each use, check the oil level.
Do not run the engine with low or no engine oil.
Running the engine with no or low engine oil
WILL permanently damage the engine.
1. Make sure the engine is stopped and is level.
2. Close the Fuel Valve, if equipped.
3. Clean the top of the Dipstick and the
area around it. Pull the Dipstick out,
and wipe it off with a clean, lint free rag.
4. Reinsert the Dipstick and remove it to
check the oil level. The oil level should be
up to the upper mark on the dipstick.
5. If the oil level is at or below the low mark,
remove the Oil Fill Plug and add the appropriate
type of oil until the oil level is at the proper level.
SAE 10W-30 oil is recommended for general use.
(Table B: SAE Viscosity Grade on page 21 in the
Maintenance section shows other viscosities to use
in different average temperatures.)
Replace the Oil Fill Plug.
6. Insert the Dipstick back into the housing.
NOTICE: Do not run the engine with too little oil.
The engine will be permanently damaged.
Oil Fill Plug
Dipstick
Figure T: Oil Fill and Dipstick
Page 16 For technical questions, please call 1-888-866-5797. ITEM 61614
Checking and Filling Fuel
WARNING! TO PREVENT SERIOUS
INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area
away from ignition sources. If the engine
is hot from use, shut the engine off and
wait for it to cool before adding fuel. Do not smoke.
1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. Remove the Strainer and remove any dirt
and debris. Then replace the Strainer.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol. Add fuel
stabilizer to the gasoline or the Warranty is VOID.
Note: Do not use gasoline that has been stored in a
metal fuel container or a dirty fuel container. It can
cause particles to enter the carburetor, affecting
engine performance and/or causing damage.
4. If needed, fill the Fuel Tank to about 1 inch under
the fill neck of the Fuel Tank with 87 octane or
higher unleaded gasoline that has been treated
with a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use.
5. Then replace the Fuel Cap.
6. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.
SAFETYOPERATIONMAINTENANCE SETUP
Page 17For technical questions, please call 1-888-866-5797.ITEM 61614
Starting the Engine
Before starting the engine:
a. Follow the Set Up Instructions in this manual to prepare the engine.
SAFETY OPERATION MAINTENANCESETUP
1. To start a cold engine, pull the Choke Knob out
b. Follow the Set Up Instructions in the equipment manual to prepare the equipment.
c. Inspect the equipment and engine.
d. Fill the engine with the proper amount and type of both unleaded gasoline and oil.
e. Read the Equipment Operation section in the equipment manual.
to the START position.
To restart a warm engine, push the Choke in
to the RUN position.
1
2. Open the Fuel Valve, if equipped.
3. Slide the Throttle or Speed Control Lever to 1/3
away from the SLOW position (the “turtle”).
Note: Some tools have a Speed Control Lever located
elsewhere on the tool which functions the same as
the Throttle. Use the Speed Control Lever in place
of the Throttle when the tool is so equipped.
3
ON
4. Insert the Key and turn it to START
until the engine starts,
no more than a few seconds.
Release the Key when the engine starts.
Page 18 For technical questions, please call 1-888-866-5797. ITEM 61614
OFF START
4
5. Allow the Engine to run for several seconds.
Then, if the Choke Knob is in
the pulled-out START position,
push the Choke Knob in very slowly
to its RUN position.
Note: Moving the Choke Knob too
fast could stall the engine.
IMPORTANT: Allow the engine to run at no load for five minutes
after each start-up so that the engine can stabilize.
6. Adjust the Throttle as needed.
5
Break-in Period:
a. Breaking-in the engine will help to ensure proper equipment and engine operation.
b. The operational break-in period will last about 3 hours of use. During this period:
• Do not apply a heavy load to the equipment.
• Do not operate the engine at its maximum speed.
c. The maintenance break-in period will last about 20 hours of use.
• Change the engine oil after this period.
Under normal operating conditions subsequent maintenance follows
the schedule explained in the MAINTENANCE section.
SAFETYOPERATIONMAINTENANCE SETUP
Stopping the Engine
1. To stop the engine in an emergency,
turn the Key to OFF.
2. Under normal conditions, use the following procedure:
a. Slide the Throttle or Speed Control
Lever to SLOW (the “turtle”).
b. Turn the Key to OFF.
c. Close the Fuel Valve, if equipped.
OFF START
NOTICE
Drain fuel at end of season
or warranty is void.
See Storage on page 23 for
complete storage instructions.
ON
Page 19For technical questions, please call 1-888-866-5797.ITEM 61614
Maintenance
WARNING
SAFETY OPERATION MAINTENANCESETUP
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING:
Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect
the spark plug caps before performing any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM EQUIPMENT FAILURE:
Do not use damaged equipment. If abnormal noise, vibration, or
excess smoking occurs, have the problem corrected before further use.
Follow all service instructions in this manual. The engine may fail critically if not serviced properly.
Many maintenance procedures, including any not detailed in this manual, will need to be performed
by a qualified technician for safety. If you have any doubts about your ability to safely service the
equipment or engine, have a qualified technician service the equipment instead.
Cleaning, Maintenance, and Lubrication Schedule
Note: This maintenance schedule is intended solely as a general guide. If performance decreases or if
equipment operates unusually, check systems immediately. The maintenance needs of each piece of equipment
will differ depending on factors such as duty cycle, temperature, air quality, fuel quality, and other factors.
Note: The following procedures are in addition to the regular checks and maintenance
explained as part of the regular operation of the engine and equipment.
Monthly or
every 20
hr. of use
Procedure
Brush off outside of engine
Check engine oil level
Check air cleaner
Check sediment cup
Change engine oil and oil filter
Clean/replace air filter
1. Check and clean spark plugs
2. Replace fuel filter.
1. Check/adjust idle speed
2. Check/adjust valve clearance
3. Clean fuel tank, strainer
and carburetor
4. Clean carbon build-up from
combustion chambers
Replace fuel line if necessary
Before
Each Use
*Service more frequently when used in dusty areas.
**These items should be serviced by a qualified technician.
Every 3 mo. or
50 hr. of use
*
Every 6 mo. or
100 hr. of use
Yearly or
every 300
hr. of use
** **
Every
2 Years
**
Page 20 For technical questions, please call 1-888-866-5797. ITEM 61614
Checking and Filling Fuel
WARNING! TO PREVENT SERIOUS
INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area
away from ignition sources. If the engine
is hot from use, shut the engine off and
wait for it to cool before adding fuel. Do not smoke.
1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. Remove the Strainer and remove any dirt
and debris. Then replace the Strainer.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol. Add fuel
stabilizer to the gasoline or the Warranty is VOID.
Engine Oil Change
Note: Do not use gasoline that has been stored in a
metal fuel container or a dirty fuel container. It can
cause particles to enter the carburetor, affecting
engine performance and/or causing damage.
4. If needed, fill the Fuel Tank to about 1 inch under
the fill neck of the Fuel Tank with 87 octane or
higher unleaded gasoline that has been treated
with a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use.
5. Then replace the Fuel Cap.
6. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.
SAFETYOPERATIONMAINTENANCE SETUP
CAUTION! Oil is very hot during operation and can
cause burns. Wait for engine to cool before changing oil.
1. Make sure the engine is stopped and is level.
2. Close the fuel valve, if equipped.
3. Place a drain pan (not included) underneath
the crankcase’s Oil Drain Plug.
4. Remove the Oil Drain Plug and, if possible,
tilt the crankcase slightly to help drain the oil out.
Recycle used oil.
5. Replace the Oil Drain Plug and tighten it.
6. Move the drain pan underneath the Oil Filter.
7. Unthread and remove the Oil Filter. Allow the oil to
drain out of the filter completely before disposal.
8. Install a new Oil Filter of the same size and type.
9. Clean the top of the Dipstick and the
area around it. Pull the Dipstick out,
and wipe it off with a clean, lint free rag.
Oil Fill Plug
Dipstick
Oil Filter
Oil Drain Plug
Figure U: Oil Drain and Oil Filter Location
30
10W-30
10. Remove the Oil Fill Plug and add the appropriate
type of oil until the oil level is at the proper level.
SAE 10W-30 oil is recommended for general use.
The SAE Viscosity Grade chart shows other
viscosities to use in different average temperatures.
Replace the Oil Fill Plug.
11. Insert the Dipstick back into the housing.
NOTICE: Do not run the engine with too little oil.
The engine will be permanently damaged.
5W-30
-20 0 20 40 60 80 100°F
Average outdoor temperature
Table B: SAE Viscosity Grade
Page 21For technical questions, please call 1-888-866-5797.ITEM 61614
Air Filter Maintenance
1. Remove the Air Cleaner Top Cover and
the air filter elements and check for
dirt. Clean as described below.
2. Clean Paper Air Filter:
SAFETY OPERATION MAINTENANCESETUP
To prevent injury from dust and debris, wear
ANSI-approved safety goggles, NIOSH-approved
dust mask/respirator, and heavy-duty work gloves.
In a well-ventilated area away from bystanders,
use pressurized air to blow dust out of the Filter.
Spark Plug Maintenance
Spark
Plug
Cap
1.
Disconnect spark plug caps from ends of plugs.
Clean out debris from around spark plugs.
2. Using a spark plug wrench, remove the spark plugs.
3. Inspect the spark plugs:
If the electrode(s) is oily, clean it using a clean,
dry rag. If the electrode(s) has deposits on it, polish
it using emery paper. If the white insulator is cracked
or chipped, the spark plug needs to be replaced.
Recommended Spark Plugs
TORCH
NGK
®
®
F5RTC
BPR5ES
3. Clean Foam Air Filter:
Wash the Filter in warm water and mild
detergent several times. Rinse. Squeeze out
excess water and allow it to dry completely.
Soak the Filter in lightweight oil briefly,
then squeeze out the excess oil.
4. Install the cleaned filter. Secure the Air
Cleaner Top Cover before use.
NOTICE: Using an incorrect spark plug
may damage the engine.
4. When installing a new spark plug(s),
adjust the plug’s gap to the specification on the
Specifications chart. Do not pry against the
electrode, the spark plug can be damaged.
5. Install the new spark plug(s) or
the cleaned spark plug(s) into the engine.
• Gasket-style:
Finger-tighten until the gasket
contacts the cylinder head,
then tighten about 1/2-2/3 turn more.
• Non-gasket-style:
Finger-tighten until the plug
contacts the cylinder head,
then tighten about 1/16 turn more.
NOTICE: Tighten the spark plugs properly.
If loose, the spark plugs will cause the
engine to overheat.
If overtightened, the threads in the
engine block will be damaged.
6. Apply dielectric spark plug boot protector
(not included) to the end of the spark plugs
and reattach the wires securely.
Page 22 For technical questions, please call 1-888-866-5797. ITEM 61614
Storage
When the equipment is to remain idle for longer than
20 days, prepare the Engine for storage as follows:
1. CLEANING:
Wait for Engine to cool, then clean Engine with
dry cloth. NOTICE: Do not clean using water.
The water will gradually enter the Engine
and cause rust damage. Apply a thin coat
of rust preventive oil to all metal parts.
2. FUEL:
To protect the fuel tank during storage, fill the
tank with gasoline that has been treated with
a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use. Refer
to Checking and Filling Fuel on page 17.
WARNING! TO PREVENT SERIOUS
INJURY FROM FIRE:
Fill tank in a well-ventilated area away from
ignition sources. If the engine is hot from
use, shut the engine off and wait for it to
cool before adding fuel. Do not smoke.
3. LUBRICATION:
a. Change engine oil.
b. Clean out area around spark plug.
Remove spark plug and pour one tablespoon of
engine oil into cylinder through spark plug hole.
c. Replace spark plug, but leave
spark plug cap disconnected.
d. Pull Starter Handle to distribute oil in cylinder.
Stop after one or two revolutions when you
feel the piston start the compression stroke
(when you start to feel resistance).
4. BATTERY:
Disconnect battery cables (if equipped).
Recharge batteries monthly while in storage.
5. STORAGE AREA:
Cover and store in a dry, level, well-ventilated
area out of reach of children. Storage area should
also be away from ignition sources, such as
water heaters, clothes dryers, and furnaces.
NOTICE: During extended storage periods the
Engine must be started every 3 months and allowed
to run for 15 – 20 minutes or the Warranty is VOID.
6. AFTER STORAGE:
Before starting the Engine during or after
storage, keep in mind that untreated gasoline
will deteriorate quickly. Drain the fuel
tank and change to fresh fuel if untreated
gasoline has been sitting for a month, if
treated gasoline has been sitting beyond the
fuel stabilizer’s recommended time period,
or if the Engine does not start.
SAFETYOPERATIONMAINTENANCE SETUP
Page 23For technical questions, please call 1-888-866-5797.ITEM 61614
Troubleshooting
Problem Possible Causes Probable Solutions
Engine will not start
SAFETY OPERATION MAINTENANCESETUP
FUEL RELATED:
1. No fuel in tank or fuel valve closed.
2. Choke not in START position, cold engine.
3. Gasoline with more than 10% ethanol used.
(E15, E20, E85, etc.)
4. Low quality or deteriorated, old gasoline.
5. Carburetor not primed.
6. Dirty fuel passageways.
7. Carburetor needle stuck.
Fuel can be smelled in the air.
8. Too much fuel in chamber. This can be
caused by the carburetor needle sticking.
9. Clogged Fuel Filter.
IGNITION (SPARK) RELATED:
1. Spark plug caps not connected securely.
2. Spark plug electrodes wet or dirty.
3. Incorrect spark plug gaps.
4. Spark plug caps broken.
5. Circuit breaker tripped.
6. Incorrect spark timing or
faulty ignition system.
COMPRESSION RELATED:
1. Cylinder not lubricated.
Problem after long storage periods.
2. Loose or broken spark plugs.
(Hissing noise will occur
when trying to start.)
3. Loose cylinder head or damaged
head gasket. (Hissing noise will
occur when trying to start.)
4. Engine valves or tappets
mis-adjusted or stuck.
FUEL RELATED:
1. Fill fuel tank with fresh 87+ octane
stabilizer-treated unleaded gasoline and
open fuel valve.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Move Choke to START position.
3. Clean out ethanol rich gasoline from fuel
system. Replace components damaged by
ethanol. Use fresh 87+ octane stabilizer-
treated unleaded gasoline only.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
4. Use fresh 87+ octane stabilizer-treated
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
5. Pull on Starter Handle to prime.
6. Clean out passageways using
fuel additive. Heavy deposits
may require further cleaning.
7. Gently tap side of carburetor float
chamber with screwdriver handle.
8. Turn Choke to RUN position.
Remove spark plugs and briefly
turn the key to start to air out the
chambers. Reinstall spark plugs and
set Choke to START position.
9. Replace Fuel Filter.
IGNITION (SPARK) RELATED:
1. Connect spark plug caps properly.
2. Clean spark plugs.
3. Correct spark plug gaps.
4. Replace spark plug caps.
5. Reset circuit breaker. Check wiring and
starter motor if breaker continues to trip.
6. Have qualified technician diagnose/
repair ignition system.
COMPRESSION RELATED:
1. Pour tablespoon of oil into each
spark plug hole. Crank engine a
few times and try to start again.
2. Tighten spark plugs.
If that does not work, replace spark plugs.
If problem persists, may have
head gasket problem, see #3.
3. Tighten head.
If that does not remedy problem,
replace head gasket.
4. Have qualified technician adjust/
repair valves and tappets.
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Page 24 For technical questions, please call 1-888-866-5797. ITEM 61614
Problem Possible Causes Probable Solutions
Engine misfires
Engine stops
suddenly
Engine stops when
under heavy load
Engine knocks
Engine backfires
1. Spark plug caps loose.
2. Incorrect spark plug gaps or
damaged spark plugs.
3. Defective spark plug caps.
4. Old or low quality gasoline.
5. Incorrect compression.
1. Fuel tank empty or full of impure or
low quality gasoline.
2. Low oil shutdown.
3. Defective fuel tank cap creating vacuum,
preventing proper fuel flow.
4. Faulty magneto.
5. Disconnected or improperly
connected spark plug caps.
6. Starter motor has overheated.
1. Dirty air filter.
2. Engine running cold.
1. Old or low quality gasoline.
2. Engine overloaded.
3. Incorrect spark timing, deposit buildup,
worn engine, or other mechanical problems.
1. Impure or low quality gasoline.
2. Engine too cold.
3. Intake valve stuck or overheated engine.
4. Incorrect timing.
1. Check wire connections.
2. Re-gap or replace spark plugs.
3. Replace spark plug caps.
4. Use only fresh 87+ octane stabilizer-treated
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
5. Diagnose and repair compression.
(Use Engine will not start:
COMPRESSION RELATED section.)
1. Fill fuel tank with fresh 87+ octane
stabilizer-treated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Fill engine oil to proper level.
Check engine oil before EVERY use.
3. Test/replace fuel tank cap.
4. Have qualified technician service magneto.
5. Secure spark plug caps.
6. Allow starter motor to cool, then press
circuit breaker button on control panel.
Do not use starter for more than
a few seconds at a time.
1. Clean or replace element.
2. Allow engine to warm up prior
to operating equipment.
1. Fill fuel tank with fresh 87+ octane
stabilizer-treated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Do not exceed equipment’s load rating.
3. Have qualified technician
diagnose and service engine.
1. Fill fuel tank with fresh 87+ octane
stabilizer-treated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Use cold weather fuel and
oil additives to prevent backfiring.
3. Have qualified technician
diagnose and service engine.
4. Check engine timing.
SAFETYOPERATIONMAINTENANCE SETUP
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Page 25For technical questions, please call 1-888-866-5797.ITEM 61614
Warranties
SAFETY OPERATION MAINTENANCESETUP
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries
to persons or property, or for incidental, contingent, special or consequential damages arising from the use of
our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid.
Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or
we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement.
We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
Emissions Control System Warranty
California and United States Emissions
Control Defects Warranty Statement
The California Air Resources Board (herein CARB), the United
States Environmental Protection Agency (herein EPA), and
Harbor Freight Tools (herein HFT) are pleased to explain the
emissions control system warranty on your 2014-2015 Small OffRoad Engine (herein engine). In California, the engine must be
designed, built and equipped to meet the State’s stringent antismog standards. Elsewhere Within the United States, new off-
road, spark-ignition engines certified for model year 2014-2015,
must meet similar standards set forth by the EPA. HFT must
warrant the emissions control system on your engine for the
periods of time described below, provided there has been no
abuse, neglect or improper maintenance of your engine.
Your emissions control system may include parts such as the
carburetor or fuel-injection system, and the ignition system.
Also included may be hoses, belts, connectors
and other emissions-related assemblies.
Where a warrantable condition exists, HFT will repair your
engine at no cost to you including diagnosis, parts and labor.
Manufacturer’s Warranty Coverage
The 2014-2015 engines are warranted for two (2) years.
If any emissions-related part on your engine is defective,
the part will be repaired or replaced by HFT.
Harbor Freight Tools Emissions Control
Defects Warranty Coverage
Engines are warranted for a period of two (2) years relative
to emissions control parts defects, subject to the provisions
set forth below. If any emissions related part on your engine
is defective, the part will be repaired or replaced by HFT.
Owner’s Warranty Responsibilities
• As the engine owner, you are responsible for the performance
of the required maintenance listed in your Owner’s Manual.
HFT recommends that you retain all receipts covering
maintenance on your engine, but HFT cannot deny warranty
solely for the lack of receipts or for your failure to
ensure the performance of all scheduled maintenance.
• As the engine owner, you should, however, be aware
that HFT may deny you warranty coverage if your
engine or a part has failed due to abuse, neglect,
improper maintenance, or unapproved modifications.
• You are responsible for shipping your engine to a HFT
warranty station as soon as a problem exists. Contact the
HFT Customer Service department at the number below to
make shipping arrangements. The warranty repairs should be
completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights
and responsibilities, you should contact the Harbor Freight Tools
Customer Service Department at 1-888-866-5797.
Page 26 For technical questions, please call 1-888-866-5797. ITEM 61614
Harbor Freight Tools Emissions Control
Defects Warranty Provisions
1. Length of Coverage
HFT warrants to a first retail purchaser and each
subsequent purchaser that the engine is free from
defects in materials and workmanship that cause
the failure of warranted parts for a period of two (2) years
after the date of delivery to the first retail purchaser.
2. No Charge Repair or Replacement
Repair or replacement of any warranted part will be
performed at no charge to the owner if the work is
performed through a warranty station authorized by HFT.
For emissions warranty service, contact the HFT
Customer Service Department at 1-888-866-5797.
3. Consequential Damages Coverage
Coverage under this warranty shall also extend to the failure
of any engine components caused by the failure of any
warranted part while it is still covered under this warranty.
4. Coverage Exclusions
Warranty claims shall be filed in accordance with the provisions
of the HFT warranty policy explained in the box at the top of the
previous page. HFT shall not be liable for any loss of use of
the engine, for any alternative usage, for any damage to goods,
loss of time, or inconvenience. Warranty coverage shall also be
excluded for any part which fails, malfunctions, or is damaged
due to failure to follow the maintenance and operating instructions
set forth in the Owner’s Manual including, but not limited to:
a) Use of parts which are not authorized by HFT
b) Improper installation, adjustment or repair of
the engine or of any warranted part unless
performed by an authorized warranty center
c) Failure to follow recommendations on fuel use
contained in the Owner’s Manual
d) Improper or inadequate maintenance of any warranted parts
e) Repairs performed outside of
the authorized warranty service dealers
f) Alterations by changing, adding to or
removing parts from the engine.
5. Service and Maintenance
Component parts which are not scheduled for replacement
as required maintenance or are scheduled only for regular
inspection to the effect of “repair or replace as necessary”
are warranted for the warranty period. Any warranted part
which is scheduled for replacement as required maintenance
is warranted for the period of time up to the first scheduled
replacement point for that part. Any replacement part, provided
it is equivalent in durability and performance, may be used
in performance of maintenance or repairs. The owner is
responsible for commissioning a qualified technician/mechanic
to perform all required maintenance, as outlined in the
Inspection, Cleaning, and Maintenance section in this manual.
6. Warranted Parts
1) Fuel Metering System
i) Carburetor and its internal parts.
ii) Fuel pump (if so equipped).
iii) Cold start enrichment system.
2) Air Induction System
i) Intake pipe/manifold.
ii) Air cleaner.
3) Ignition System
i) Spark plugs.
ii) Magneto ignition system.
4) Catalyst System (if so equipped)
i) Exhaust pipe stud.
ii) Muffler.
iii) Catalytic converter (if so equipped).
5) Miscellaneous Items Used in Above Systems
i) Vacuum, temperature and time
sensitive valves and switches.
ii) Hoses, belts, connectors, and assemblies.
SAFETYOPERATIONMAINTENANCE SETUP
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
Page 27For technical questions, please call 1-888-866-5797.ITEM 61614
Parts Lists and Diagrams
Parts List
SAFETY OPERATION MAINTENANCESETUP
Part Description Qty
1 Bolt, Cylinder Head Cover 2
2 Cover, Left Cylinder Head 1
3 Gasket, Cylinder Head Cover 2
4 Spark Plug 2
5 Bolt, Cylinder Head 8
6 Head, Left Cylinder 1
7 Head, Right Cylinder 1
8 Pin 4
9 Gasket, Cylinder Head 4
10 Metal Head Gasket 2
11 Stud 4
12 Stud 4
13 Cover, Right Cylinder Head 1
14 Oil Fill Plug 1
15 Oil Fill Plug Seal 1
16 Crankcase 1
17 Cotter Pin 2
18 Washer 3
19 Governor Arm 1
20 Oil Seal 1
21 Drain Plug 2
22 Washer 2
23 Oil Seal 1
24 Breather Separator 1
25 Breather Plate 1
26 Breather Gasket 1
27 Breather Gasket 1
28 Breather Cover 1
29 Clamp 1
30 Bolt 2
31 Bolt 2
32 Spring Wire Clamp 2
33 Breather Hose 1
34 Gasket, Inlet 2
35 Intake 1
36 Nut 4
37 Fuel Pump 1
38 Bolt 3
39 Fuel Pump Sleeve 2
40 Fuel Pump Bracket 1
41 Fuel Filter 1
42 Spring Clamp 5
43 Vacuum Hose 1
44 Vacuum Hose 1
45 Spring Clamp 2
46 Fuel Hose 1
47 Fuel/Oil Separator 1
48 Fuel Hose 1
49 Clamp 1
50 PCV Valve 1
51 Sensor, Engine Oil 1
52 Bolt 2
53 Bolt 7
54 Bolt 2
55 Crankcase Cover 1
56 Pin 2
57 Crankcase Gasket 1
58 Seal, Oil 1
59 Hose, Suction Oil 1
60 O-Ring 1
61 Bolt 2
62 Bolt 2
63 Pin 2
64 Oil Pump Asm. 1
65 Cover, Oil Pump 1
66 Spring, Pressure Relief Valve 1
Part Description Qty
67 Ball, Steel 1
68 Strainer, Oil 1
69 Governor Gear Asm. 1
70 Dipstick, Oil 1
71 Gasket, Oil Pump 1
72 Crankshaft 1
73 Washer, Thrust 1
74 Rod, Connecting 2
75 Piston 2
76 Pin, Piston 2
77 Clip, Piston Pin 4
78 Primary Ring 2
79 Secondary Ring 2
80 Ring Set, Oil 2
81 Nut, Valve Lock 4
82 Bolt,Valve Adjusting 4
83 Rocker, Valve 4
84 Shaft, Valve Rocker 4
85 Lifter, Valve 4
86 Tappet, Valve 4
87 Seat, Valve Spring 4
88 Check Ring 4
89 Clamp, Valve Lock 8
90 Spring, Valve 4
91 Guide, Seal 4
92 Retainer, Valve Spring 4
93 Valve, Exhaust 2
94 Valve, Intake 2
95 Camshaft 1
96 Washer, Camshaft 1
97 Shield, Shroud 1
98 Bolt 3
99 Shroud Nut 4
100 Shroud 1
101 Air Cleaner Front Cover 1
102 Air Cleaner Front Knob 2
103 Shroud 2, Cylinder Body 1
104 Diode 1
105 Shroud, Cylinder Body 1
106 Shield, Lower 1
107 Bolt 13
108 Plug, End 1
109 Shield, Crankcase Side 1
110 Bolt, Flange Shoulder 1
111 Lifting Bracket 2
112 Flange Shoulder Bolt 2
113 Right Lower Cover 1
114 Right Shield 1
115 Gasket, Oil Filter Cover 1
116 Oil Filter Block 1
117 Ring, Seal 1
118 Hose, Oil Filter Installation 1
119 Oil Filter 1
120 Washer, Flat 2
121 Cooling Pipe Adapter 2
122 Clamp 4
123 Cooling Pipe 1
124 Cooling Pipe 1
125 Radiator 1
126 Bolt 2
127 Voltage Regulator Insulator 1
128 Regulator, Voltage 1
129 Gasket, Carburetor 3
130 Gasket, Carburetor Insulator 1
131 Carburetor Intake Elbow 1
132 Bolt 2
Part Description Qty
133 Bolt 1
134 O-ring 1
135 Air Cleaner Connector 1
136 Bolt 4
137 Carburetor Asm. 1
137a Carburetor Drain Plug 1
137b Carburetor Bowl Bolt 4
137c Carburetor Bowl 1
137d Outer Bowl O-ring 2
137e Inner Bowl O-ring 2
138 Solenoid Valve 1
139 Throttle Rod Clip 1
140 Spring Clamp 1
141 Fuel Hose 1
142 Air Cleaner Asm. 1
142a Air Cleaner Top Knob 1
142b Air Cleaner Top Cover 1
142c Air Cleaner Spacer 1
142d Foam Air Filter 1
142e Paper Air Filter 1
142f Air Cleaner Gasket 1
142g Air Cleaner Base Asm. 1
143 Intake Cover Bolt 2
144 Intake Cover 1
145 Intake Screen 1
146 Air Cleaner Base Bolt 2
147 Fuel Filter Clip 1
148 Coil, Ignition 1
149 Coil, Ignition 1
150 Bolt 2
151 Stud 2
152 Stud 2
153 Coil, Charge 1
154 Bolt 6
155 Flywheel 1
156 Gasket 1
157 Bolt, Flywheel 1
158 Impeller 1
159 Tray, Impeller Setting 1
160 Bolt 3
161 Protector, Oil 1
162 Bolt 1
163 Pin 2
164 Starter 1
165 Bolt 2
166 Control, Throttle Asm. 1
167 Control, Throttle Asm. 1
168 Spring, Governor 1
169 Bolt 2
170 Spring, Governor 1
171 Nut 2
172 Bolt, Governor Support 1
173 Throttle Support 1
174 Throttle Rod 1
175 Throttle Rod Spring 1
176 Choke Rod Clip 1
177 Choke Rod 1
179 Throttle Cable 1
180 Motor Control Box 1
181 Control Box Support 1
182 Bolt 2
183 Muffler Asm. 1
184 Nut 4
185 Bolt 2
186 Gasket, Exhaust Outlet 2
187 Spark Collector 1
Page 28 For technical questions, please call 1-888-866-5797. ITEM 61614
Record Product’s Serial Number Here:
53
160
98
182
Note: If product has no serial number,
record month and year of purchase instead.
Assembly Diagram
53
53
68
67
66
56
54
53
53
58
54
53
53
55
56
57
SAFETYOPERATIONMAINTENANCE SETUP
64
62
Note: Some parts are listed and shown
for illustration purposes only, and are not
available individually as replacement parts.
120
121
121
120120
122
123
122
124
148
152
152
150
151151
151
150
154
156
157
158
159
160
160
99
99
99
97
98
98
149
154
153
154
155
163
163
164
165
161
162
112
100
99
102
126
126
119
118
117
116
115
108
122
122
107
114
107
107
165
38
102
125
110
106
111
107
103
105
109
104104
34
36
41
38
39
40
101
107
107
107
113
111
107
107
112
127
128
21
22
23
27
31
30
29
31
34
36
3737
3838
4949
36
3636
4242
46
39
42
42
48
175
19
18
18
20
17
16
52
24
22
21
51
25
26
32
28
30
32
33
35
42
45
44
43
45
47
42
169
170
171
174
173
172
179
77
76
77
74
73
76
77
72
18
17
50
52
167
168
176
177
180
63
63
71
65
62
61
60
59
61
78
79
80
75
77
75
80
79
78
89
90
90
91
92
92
93
94
95
169
166
69
70
184
184
186
185
184
184
185
186
81
82
81
82
83
83
84
87
84
87
88
88
85
89
89
89
85
91
86
86
137a
139
129
130
86
96
86
93
92
94
92
91
137b
138
137c
137d
137e
129
132
132
129
131
85
84
85
91
90
84
89
87
88
83
90
88
89
87
136
136
136
135
134
137
133
140
141
183
187
4
5
5
12
12
8
8
9
10
9
10
9
9
11
11
83
82
81
82
81
142e
147
142g
11
142d
146
1
2
3
5
5
6
12
12
8
5
15
14
5
8
7
11
142b
142c
143
143
145
144
146
13
3
5
1
5
4
142142a
142f
181
Page 29For technical questions, please call 1-888-866-5797.ITEM 61614
Mounting Hole Diagram
Note: Not to scale.
SAFETY OPERATION MAINTENANCESETUP
2x 0.47" / 12mm
7.7" / 195.5mm
~4" / 102mm
4.625" / 117.5mm
4" / 101.5mm
3.375" / 86mm
4x
0.47" /
12mm
Page 30 For technical questions, please call 1-888-866-5797. ITEM 61614
Power Take-Off Diagram
Note: Not to scale.
9x 0.43"
/ 11mm
3/8" - 24UNF
0.2" / 5mm
2.84" / 72.2mm
2.375" / 60.5mm
1.1" / 28mm
1.4" / 36mm
18.3mm
PTO
0.25" / 6.3mm
1" / 25.4mm
0.72" /
1.3" / 34mm
0.86" /
SAFETYOPERATIONMAINTENANCE SETUP
21.8mm
Ø5.75" /
146mm
4x 5/16" - 24UNF
4x 3/8" - 16UNC
4x 7/16" - 14UNC
Ø7.75" /
196.9mm
Ø6.5" /
165.1mm
Ø5" /
127mm
5.3" / 135mm
Page 31For technical questions, please call 1-888-866-5797.ITEM 61614
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797
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