Greyhound 66015 User guide

HORIZONTAL
- OHV
SET UP, OPERATING, AND SERVICING
INSTRUCTIONS
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.
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2008 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Model 66015
6.5 HP GAS ENGINE

Page 2SKU 66015 For technical questions, please call 1-800-444-3353.
Contents
SPECIFICATIONS......................................................................................... 3
Save This Manual............................................................................................... 3
SAFETY WARNINGS AND PRECAUTIONS ................................................ 3
UNPACKING ................................................................................................. 5
MOUNTING................................................................................................... 6
OPERATION ................................................................................................. 6
Controls and Indicators ...................................................................................... 6
Pre-Operation Checks........................................................................................ 7
TROUBLESHOOTING .................................................................................. 9
General/Basic Troubleshooting .......................................................................... 9
Engine Difficult to Start ...................................................................................... 9
Low Engine Power .............................................................................................10
Engine not Running Smoothly............................................................................ 10
Engine Excessively Hot...................................................................................... 11
Abnormal Engine Noise ..................................................................................... 11
MAINTENANCE............................................................................................ 12
Scheduled Maintenance..................................................................................... 12
Cleaning Air Filter............................................................................................... 12
Cleaning and Replacing Spark Plug .................................................................. 12
Changing Oil ...................................................................................................... 13
Cleaning the Deposit Cup .................................................................................. 13
Torque Value for Major Engine Bolts .................................................................. 14
Transporting the Engine ..................................................................................... 14
Storing the Engine ............................................................................................. 14
PARTS LISTS AND ASSEMBLY DIAGRAMS.............................................. 16
Crankcase .......................................................................................................... 16
Crankcase Cover................................................................................................ 17
Cylinder Head and Cover ................................................................................... 18
Crankshaft, Piston, and Connecting Rod........................................................... 19
Camshaft and Rocker Valve ............................................................................... 20
Carburetor .......................................................................................................... 21
Fuel Tank............................................................................................................ 22
Air Cleaner ......................................................................................................... 23
Muffler ................................................................................................................ 24
Recoil Starter ..................................................................................................... 25
Regulator Control............................................................................................... 26
Flywheel............................................................................................................. 27
Ignition Coil ........................................................................................................ 28
Wiring Diagram .................................................................................................. 29
WARRANTY.................................................................................................. 29
Emission Control System Warranty.................................................................... 30

Page 3SKU 66015 For technical questions, please call 1-800-444-3353.
SPECIFICATIONS
Power Output 6.5 HP Gas Engine, EPA approved
Displacement / Stroke 196 cc; 4-stroke
Ignition Type Electronic ignition (T.C.I.)
Cooling System Forced air cooling
Idling Carburetor Adjust 1700 +/- 150 RPM
Valve clearance Cold engine – Intake: 0.15 +/- 0.02mm;
Exhaust: 0.20 +/- 0.02 mm
Maximum Power Output 4.8 KW @ 3600 RPM
Maximum Torque 11-N.M./2500-RPM
Distributor Timing Intake valve opening: BTDC 10 degrees;
Intake valve closing: ABDC 20 degrees
Bore and Stroke 68 x 54 mm
Spark Plug Type BP6ES, BPR6ES (NGK), or NHSPLD F6TC; 0.7~0.8 mm clearance
Gasoline Type Unleaded
Gasoline Tank Capacity 0.93gallon (3.5liters)
Drive Shaft Type Horizontal, ¾” straight, (3/16”) keyed shaft with ball bearings. Direction:
counterclockwise (facing shaft); Length: 2-1/4”; Central thread: 5/16”-24
Start Type Recoil
Speed 3600 RPM
Oil Capacity and Type 0.528 quart (0.5 liters); SAE 10W30 (in freezing weather use 5W30)
Engine Mounting Square pattern, 4 holes; 8.0-1.25 mm threads
Weight 33.8 lbs.
Overall Dimensions 12-3/4” L x 14” W x 10-1/4” H
Recommended Applications To drive: pump, sprayer, tiller, chipper, shredder, log splitter
Features Low oil shutdown, automatic
Longer engine life with bearing supported shaft
Meets EPA certification (2008)
Fuel shutoff valve
The Emission Control System for this generator’s engine is warranted for standards
set by the U.S. Environmental Protection Agency. For warranty information, refer to the back
two pages of this manual.
Save This Manual
You will need the manual for the safety warnings and precautions, assembly instruc-
tions, operating and maintenance procedures, parts list and diagram. Keep your invoice with
this manual. Write the invoice number on the inside of the front cover. Keep the manual and
invoice in a safe and dry place for future reference.
SAFETY WARNINGS AND PRECAUTIONS
WARNING: When using this Engine, basic safety precautions should always be followed to reduce
the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
Keep work area clean. Dark and cluttered areas invite injuries.
Observe work area conditions. Do not use the Engine in damp or wet locations. Do
not expose to rain. Keep work area well lit. Do not use powered tools in the presence
of flammable gases or liquids.
1.
2.

Page 4SKU 66015 For technical questions, please call 1-800-444-3353.
Keep children away. Children must never be allowed in the work area. Do not let
them handle machines, tools, or extension cords.
Store idle equipment. When not in use, the Engine must be stored in a dry location
to inhibit rust. Always lock up tools and keep out of reach of children.
Dress properly. Do not wear loose clothing or jewelry as they can be caught in moving
parts. Wear restrictive hair covering to contain long hair.
Use the right tool for the job. Do not attempt to force the Engine to do the work of
a larger industrial tool. There are certain applications for which this equipment was
designed. It will do the job better and more safely at the rate for which it was intended.
Do not modify the Engine for a purpose for which it was not intended.
Use eye and ear protection. Always wear ANSI-approved impact safety goggles and
ear plugs when working with the Engine.
Do not overreach. Keep proper footing and balance at all times. Do not reach over
or across running machines.
Maintain this equipment with care. Keep the Engine clean for better and safer per-
formance. Follow instructions for lubricating and changing accessories.
Remove adjusting keys and wrenches. Remove keys and adjusting wrenches from
the Engine before starting.
Avoid unintentional starting. Be sure the power switch and gas valve are in the Off
position when not in use.
Check for damaged parts. Check for alignment and binding of moving parts; any
broken parts or mounting fixtures; and any other condition that may affect proper opera-
tion. Any part that is damaged should be properly repaired or replaced by a qualified
technician. Do not use the Engine if the switch does not turn On and Off properly.
Do not operate the Engine while tired or under the influence of drugs, alcohol,
or medication. Read warning labels if taking prescription medicine to determine if
your judgment or reflexes are impaired while taking drugs. If there is any doubt, do
not operate the equipment.
Maintenance. For your safety, service and maintenance should be performed regularly
by a qualified technician.
People with pacemakers should consult their physician(s) before use. Electro-
magnetic fields in close proximity to heart pacemaker could cause pacemaker interfer-
ence or pacemaker failure. Caution is necessary when near coil, spark plug cables, or
distributor of running engine. Engine should be off during distributor adjustment.
Fire Hazard! Do not fill gas tank when the Engine is running. Do not operate if
gasoline has been spilled. Clean spilled gasoline before starting the Engine. Do not
operate near a pilot light or open flame.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.

Page 5SKU 66015 For technical questions, please call 1-800-444-3353.
Operate the Engine in well-ventilated areas only. Carbon Monoxide is produced
during operation and is deadly in a closed environment. Early signs of Carbon Monox-
ide poisoning resemble the flu, with headaches, dizziness, or nausea. If you develop
these symptoms, there may be inadequate ventilation in the work area or the engine
may not be working properly. Get fresh air immediately.
Avoid burns from the Engine. Certain parts of the Engine become very hot during
use. Do not touch the Engine until it cools down.
Install this product on a appropriate surface. Locate on a flat, level, and solid sur-
face that is capable of supporting the weight of the engine and the machinery that it
is powering.
Do not operate the Engine with the safety guards removed. While the engine is
running, do not attempt to reach around the safety guards for maintenance or any other
reason.
If the Engine is installed indoors, exhaust fumes must be piped out of the building
using leak-free, heat-resistant piping. Pipes and silencer should not use any flam-
mable materials, nor should they be installed near the same. Engine exhaust fumes
should be within legal limits.
Engine fuel and fumes are flammable, and potentially explosive. Do not smoke,
or allow sparks, flames or other sources of ignition around the engine, fuel tanks,
or batteries. Use proper fuel storage and handling procedures. Always have multiple
ABC class fire extinguishers nearby.
Never store fuel or other flammable materials near the Engine.
Keep hands, arms, long hair, loose clothing, and jewelry away from pulleys, belts,
and other moving parts. Be aware that when engine parts are moving fast they can-
not be seen clearly.
The Engine can produce high noise levels. Prolonged exposure to noise levels
above 85 dBA is hazardous to hearing. Always wear ANSI-approved hearing protec-
tion when operating or working around the Engine when it is running.
Warning: The warnings, cautions, and instructions discussed in this instruction manual can-
not 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.
UNPACKING
When unpacking, check to make sure all parts are included. If any parts are missing
or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon
as possible.
17.
18.
19.
20.
21.
22.
23.
24.
25.

Page 6SKU 66015 For technical questions, please call 1-800-444-3353.
MOUNTING
Mount the Engine using the four mounting holes at the base (hardware not supplied).
Select a flat, level location able to withstand the weight, vibration, and the load device
connected to the Engine. If installed indoors, proper exhaust ventilation tubing must
be installed. If installed outdoors, a weatherproof housing is recommended.
Install the Engine load.
The Engine load must be perfectly aligned with the Engine drive shaft to prevent undue
wear on the shaft and bearings. A qualified technician should perform this operation.
OPERATION
Controls and Indicators
Oil Plug (1B)Dip Stick
(8B)
Drain Plug
Muffler (4J)
Engine Switch (6K) Throttle
(18F)
Choke
(15F)
Gas Valve
Drive Shaft
Fuel Tank Cap (9 G) Air Filter
Drain Plug
Spark Plug (10C)
Starter Pull
Cord (16K)
Filter Cup
(7G)
Muffler (4J)
Oil Plug (2B)
1.
2.
level
handle

Page 7SKU 66015 For technical questions, please call 1-800-444-3353.
Pre-Operation Checks
Caution: Failure to add oil to the Engine before use will damage the Engine and void
the factory warranty. Engine oil is the key factor in engine performance. Do not use
Engine oil with additives. Do not use two-stroke gasoline-oil. Using these products will
shorten Engine life. See Specifications on page 2 for recommended oil type.
Check that all mounting nuts and bolts are tight.
Check oil level (See illustration below, left.) If needed, add oil. Unscrew the oil Dip Stick
(8B) and wipe clean. Insert the Dip Stick back into the hole without screwing it in. Re-
move it again and check the oil level. Full is indicated by oil on the Upper Level mark.
Use a siphon to avoid spilling the oil. Carefully screw the plastic Dip Stick back into the
metal Engine crankcase to avoid stripping the plastic threads on the Dip Stick.
Check Air Filter. (See illustration above, right.) Unscrew Air Filter Wing Nut (1H) and
remove the Air Filter Cover (2H) and Filter Elements. If dirty or dusty, clean (refer to
the Maintenance Section).
Caution: To avoid damaging the Engine, never run it without the Air Filter Assembly (11H)
attached.
Remove the fuel Filter Cup (7G), clean and replace it before filling. Fill the Fuel Tank
(11G), outdoors, with up to 0.93of a gallon of unleaded gasoline containing at least
86 octane. Do not top-off tank. Replace Fuel Cap (9G). Clean up any spilled gas
with a dry cloth.
Fire Hazard! Do not fill Gas Tank when the Engine is running, or near a pilot light or
open flame. Do not smoke. Do not operate if gasoline has been spilled. Clean spilled
gasoline before starting the engine.
1.
2.
3.
4.

Page 8SKU 66015 For technical questions, please call 1-800-444-3353.
Starting the Engine
During this procedure, it may be helpful to refer to the photos of the Engine Controls on
page 6.
Push the Gas Valve to the open (right) position.
Close the Choke (15F) by pulling it to the left.
Note: If the Engine is already hot, it is not necessary to close the Choke.
Push the Throttle Lever (18F) to the slow (right) position , then move
it back slightly.
Turn the Engine Switch (6K) to the On position.
Gently pull the Pull Cord Handle (16K) until it engages. Then pull it hard and all the
way out. Slowly guide the Pull Cord back into the starter.
The Engine should start. Try again if it does not start. Refer to the Troubleshooting
section if problems persist. Let the engine run for five minutes to warm up.
Push the Choke to the right
Push the Throttle Lever to the fast position (left).
Stopping the Engine
Push the Throttle Lever to the slow (right) position.
Turn the Engine Switch to the Off position.
Push the Gas Valve to the closed (left) position.
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.

Page 9SKU 66015 For technical questions, please call 1-800-444-3353.
TROUBLESHOOTING
General/Basic Troubleshooting
Symptom Probable Cause Possible Remedy
Engine will not start. 1. On/Off Switch in Off position.
2. Gas Valve in closed position.
3. Choke set to open position.
4. Gas Tank empty.
5. Spark plug dirty.
6. Technical problem.
1. Turn to On position.
2. Push to open position.
3. Set to closed position.
4. Fill Gas Tank.
5. Remove spark plug and clean.
6. Service by qualified mechanic.
Engine runs rough,
pinging noises.
1. Gasoline wrong type.
2. Gasoline has water.
1. Replace with 89 octane gas.
2. Empty tank and replace gas.
Engine stops by itself,
but has gas.
1. Low oil level auto shut off.
2. Technical problem.
1. Check oil level; Add if needed.
2. Service by qualified mechanic.
Engine does not reach
full speed.
1. Choke closed.
2. Air filters clogged.
3. Technical problem.
1. Open Choke.
2. Clean air filter elements.
3. Service by qualified mechanic.
Engine Difficult to Start
Symptom Probable Cause Possible Remedy
Engine difficult to start
–Cylinder compression OK
–Spark OK
Fuel supply blocked:
1. Air vent in Gas Cap clogged.
2. Gas Valve plugged up
3. Main jet cloged or misadjusted
4. Needle valve improperly
closed or start hole is clogged
5. Floater in fuel tank is damaged
or sticking
1. Clean Gas Cap air vent
2. Unclog Gas Valve
3. Clean and/or readjust
4. Take apart needle valve and
repair, clean, and blow out
5. Repair floater
Engine difficult to start
–Cylinder compression OK
–Spark OK
–Gas supply OK
Fuel system problem:
1. Gas dirty, has water, or is old
2. Engine cylinder flooded
3. Gas wrong type
1. Drain gas and replace
2. Drain extra gas, dry spark plug
electrodes
3. Drain gas and replace
Engine difficult to start
–Cylinder Compression OK
–Gas supply OK
–Ignition coil spark OK
1. Spark plug has carbon buildup
or dirt on and around electrodes
2. Electrodes are burned
3. Improper spark gap
1. Remove spark plug and clean
2. Replace spark plug
3. Adjust spark plug electrodes
Engine difficult to start
–Gas supply OK
–Ignition system OK
1. Piston ring worn
2. Piston ring is sticking
3. Piston ring broken
4. Spark plug loose or without a
gasket
5. Air leakage between cylinder
block and cylinder
6. Air leakage in valve
1. Replace piston rings
2. Clean out carbon fouling
3. Replace piston ring
4. Tighten with a gasket
5. Check cylinder gasket and
bolts
6. Check valve clearance and
thickness, repair if required

Page 10SKU 66015 For technical questions, please call 1-800-444-3353.
Low Engine Power
Symptom Probable Cause Possible Remedy
When pressing Throttle
for higher speed, engine
responds slowly; speed is
decreased; or engine stops.
Incorrect Ignition timing. Re-adjust ignition advance angle.
Fuel supply problem:
1. Fuel line is clogged or has air
2. Main jet not adjusted properly
3. Carburetor needle valve hole
and main jet clogged
4. Gas valve clogged
5. Carbon buildup in combustion
chamber.
6. Air filter is clogged.
7. Intake pipe leaking.
1. Clean line. Bleed line of air.
2. Readjust jet.
3. Clean needle valve hole and
main jet
4. Clean or replace gas valve.
5. Clean combustion chamber.
6. Clean filter elements.
7. Repair or replace.
Low compression:
1. Piston, piston ring, or cylinder
worn.
2. Air leakage from surface where
cylinder block contacts cylinder
head.
3. Valve clearance incorrect.
4. Valve tightness poor.
1. Replace damaged part.
2. Replace cylinder gaskets.
3. Adjust valve.
4. Repair or replace valve.
Engine not Running Smoothly
Symptom Probable Cause Possible Remedy
Engine pinging. 1. Piston, ring, or cylinder worn.
2. Piston pin and pin hole are
worn excessively.
3. Tie rod small head is worn.
4. Main crankshaft roller bearing
worn.
1. Replace worn part.
2. Replace piston and/or pin.
3. Replace tie rod.
4. Replace roller bearing.
Abnormal combustion. 1. Engine too hot.
2. Carbon fouling in combustion
chamber.
3. Wrong gasoline type.
1. Troubleshoot overheating (see
page 11).
2. Clean chamber.
3. Drain gas from system and
replace with correct type.
Spark plug not firing
correctly
1. Water in carburetor float
chamber.
2. Spark plug electrode gap
wrong.
3. Incorrect ignition timing.
4. Ignition coil malfunction.
1. Clean Carburetor.
2. Adjust spark plug gap.
3. Re-adjust.
4. Repair or replace coil.
Engine stops suddenly. 1. Gas tank empty.
2. Carburetor clogged
3. Floater is leaking.
4. Needle valve sticks.
5. Spark plug dirty or damaged.
6. Spark plug connector wire
damaged or disconnected.
7. Low oil auto-shutdown.
8. Ignition coil damaged.
9. Cylinder or valve damaged.
1. Fill gas tank.
2. Clean carburetor and check
fuel line.
3. Repair or replace.
4. Disassemble floater chamber
and clean.
5. Replace spark plug.
6. Check and repair spark plug
wire.
7. Fill with oil.
8. Repair or replace.
9. Disassemble, check, and
repair.

Page 11SKU 66015 For technical questions, please call 1-800-444-3353.
Engine Excessively Hot
Symptom Probable Cause Possible Remedy
Engine runs excessively
hot.
1. Ignition timing off.
2. Engine oil low.
3. Exhaust pipe or muffler
clogged.
4. Flow guard is leaking.
5. Cooling fan loose, damaged,
or clogged.
6. Cylinder, piston, or piston
ring is worn resulting in air flow
between cylinder and crankcase.
7. Engine speed maximum set
too high.
8. Crankshaft main bearing burnt.
1. Adjust ignition advance angle.
2. Fill with oil.
3. Clean out exhaust pipe and
muffler.
4. Repair leakage.
5. Clean, repair, or replace fan.
6. Replace damaged parts.
7. Re-adjust engine speed
governor.
8. Replace main bearing.
Abnormal Engine Noise
Symptom Probable Cause Possible Remedy
Noise of piston banging, or
other metal-on-metal
1. Piston, piston ring, or cylinder
worn.
2. Tie rod, piston pin and hole
worn.
3. Crankshaft main bearing worn.
4. Piston ring broken.
5. Carbon deposits in combustion
chamber.
6. Spark plug gap too small.
7. Using wrong gasoline.
8. Engine running too hot.
9. Incorrect valve clearance.
10. Flywheel not tightly
connected to crankshaft.
1. Replace worn parts.
2. Replace worn parts.
3. Replace main bearing.
4. Replace piston ring.
5. Clean combustion chamber.
6. Adjust electrode clearance.
7. Empty gas tank and refill with
proper gasoline.
8. See Troubleshooting
Excessively Hot Engine.
9. Readjust valve clearance.
10. Retighten flywheel.

Page 12SKU 66015 For technical questions, please call 1-800-444-3353.
MAINTENANCE
Before performing maintenance procedures, it may be helpful to locate the items to be
serviced in the photos on page 5. Many Engine maintenance, adjustments, and repairs must
be completed by a qualified, small engine mechanic.
Scheduled Maintenance
Frequency
Item
Each
Use
First
month or
20 hours
Each
50
hours
Every 6
months or
100 hours.
Each year
or 300
hours.
Engine oil Check Replace Replace
Air Filter Check Clean Clean Replace
Spark Plug Clean & Adjust Replace
Spark Eliminator Clean
Idling Check & Adjust*
Valve Clearance Check & Adjust**
Fuel Tank & Filter Clean
Fuel Line Check
Deposit Cup Clean
* Proper Idle: 1700 ± 150 RPM ** Valve Clearance
(cold engine)
Intake:
Exhaust:
0.15 ± 0.02mm
0.20 ± 0.02mm
Cleaning Air Filter
Using compressed air, blow the dust from both elements and the
Filter Base on the Engine. If the Filter Elements cannot be cleaned,
wash the foam element with mild soap and water, and dry. Purchase
a new paper Filter Element if necessary. Reinstall Filter Elements, Air
Filter Housing, and Nut.
Cleaning and Replacing Spark Plug
Remove the Spark Plug (10C) with a socket wrench (not sup-
plied).
Wait for the Engine to cool to avoid burning hands.
.027” to .031”
Clean Spark Plug with a steel brush. If the insulator is damaged, replace Spark
Plug.
Caution: Using other than the recommended Spark Plug replacement type can damage the
Engine (see Specifications on page 2).
1.
2.

Page 13SKU 66015 For technical questions, please call 1-800-444-3353.
Measure the Spark Plug electrode gap with a feeler gauge (not supplied). It should be
between 0.7 to 0.8 mm. If adjustment is necessary, bend the side electrode carefully,
then re-measure. If Spark Plug Gasket is damaged, replace it.
Replace Spark Plug by hand for the first few turns, then tighten with the socket wrench
completely. A Spark Plug with a new Gasket requires 1/2 more turns to tighten than
the used Gasket which requires 1/8 to 1/4 turns to tighten.
Changing Oil
Run the Engine for five minutes to warm up the oil, then shut off the Engine.
Place a drain pan under the Drain Plug.
Remove the Dip Stick and unscrew the Drain Plug.
Allow all the oil to drain out into the pan. Pour the used oil into a container with a lid.
Deliver used oil to a recycling center. Do not dump oil into the earth or storm drain.
Dispose of oil properly.
Replace Drain Plug and securely tighten.
Add 1/2 quart of 10W30 motor oil through a funnel (not included) into the Dip Stick fill
hole. Fill until the oil reaches the Upper Level line of the fill hole.
Replace the Dip Stick carefully.
Cleaning the Deposit Cup
Push the Gas Valve to the closed (left) position.
Using a wrench (not supplied), loosen and remove the Bolt
under the Deposit Cup. Place a pan below the Deposit
Cup to catch any remaining gasoline.
Remove the Deposit Cup and O-ring, and wash them in
cleaning solvent.
Reinstall the Deposit Cup.
Push the Gas Valve to the open (right) position and check
for gas leaks from the Deposit Cup. Reinstall the Deposit Cup and tighten hardware.
3.
4.
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.

Page 14SKU 66015 For technical questions, please call 1-800-444-3353.
Torque Value for Major Engine Bolts
Item Torque Value (ft-lb)
Cylinder Head Bolts 18
Flywheel Bolt 52~59
Crankcase Cover Bolts 18
Connecting Rod 9
Transporting the Engine
Press the Gas Valve to the left (closed) position.
Wait until the engine is cool before lifting and moving.
Keep the Engine level while carrying with another person.
Storing the Engine
Replace the Engine oil with new oil before storing as described on page 13.
Remove the Spark Plug as described on page 12. Add a spoonful of new Engine oil
through the Spark Plug mounting hole, into the cylinder. Rotate the driveshaft to dis-
tribute the oil evenly. Replace the Spark Plug. Wipe up any spilled oil.
With a gas can and funnel (neither included) underneath the Deposit Cup, unscrew the
Drain Plug of the Deposit Cup and drain all the gasoline from the Gas Tank. The Gas
Valve must be open. When drained, replace the Drain Plug. See illustration above,
left.
Pull the Starter Pull Cord slowly, and when it engages keep pulling until the arrow on
the starting sleeve aligns with the hole of the starter. See illustration above, right. This
ensures that the inlet and outlet valves are closed, preventing a buildup of moisture
and rust within the engine.
Cover the Engine with a waterproof cover.
1.
2.
3.
1.
2.
3.
4.
5.

Page 15SKU 66015 For technical questions, please call 1-800-444-3353.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THESE PARTS
LISTS AND ASSEMBLY DIAGRAMS IN THIS MANUAL AS A REFERENCE TOOL
ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRE-
SENTATION 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 MAN-
UFACTURER 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.
ORDERING PARTS
When ordering parts from the following Parts Lists and Diagrams be sure to indicate
which Parts List you are ordering from by including the alpha digit (A-N) of the Parts List and
the name of the engine subsystem, as well as the Part Number. Including this information
will assure that the correct part is received. Not all parts are available for order, some are just
listed to show an accurate representation of the mechanical aspects of the Engine.
Record Product’s Serial Number Here: _________________________________ .
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts.

Page 16SKU 66015 For technical questions, please call 1-800-444-3353.
PARTS LISTS AND ASSEMBLY DIAGRAMS
Crankcase Assembly Diagram
Note: When ordering parts from this list, specify: Parts List A, CRANKCASE ASSEMBLY
and the ITEM No.
Crankcase Parts List
Part Description Qty
1A Drain Plug 2
2A Washer 2
3A Bearing, 6205 1
4A Seal, Oil, Crankshaft 1
5A Crankcase 1
6A Sway Bar, Regulator 1
7A Washer 2
8A Pin, Split 1
9A Nut, M10 1
10A Sensor, Oil 1
Part Description Qty
11A Bolt, M6x14 2
12A Regulating Shaft 1
13A Washer, Drive Gear 1
14A Pin 2
15A Drive Gear, Regulator 1
16A Fly Block 2
17A Drive Gear Assembly Regulator 1
18A Snap Ring 1
19A Washer 2
20A Sliding Sleeve 1
Note: Some parts on this Parts List and the Parts Lists that follow are listed and shown for
illustration purposes only and are not available individually as replacement parts.

Page 17SKU 66015 For technical questions, please call 1-800-444-3353.
Crankcase Cover Assembly Diagram
Note: When ordering parts from this list, specify: Parts List B, CRANKCASE COVER AS-
SEMBLY and the ITEM No.
Crank Case Cover Parts List
Part Description Qty
1B Oil Plug with Seal 1
2B Oil Plug 1
3B Seal 2
4B Crankcase Cover 1
5B Bearing, 6250 1
6B Gasket, Crankcase 1
Part Description Qty
7B Pin, Set 2
8B Dipstick 1
9B Dipstick with seal 1
10B Oil Seal, Crankshaft 1
11B Bolt, M8x32 7

Page 18SKU 66015 For technical questions, please call 1-800-444-3353.
Cylinder Head and Cover Assembly Diagram
Note: When ordering parts from this list, specify: Parts List C, CYLINDER HEAD AND COVER
ASSEMBLY and the ITEM No.
Cylinder Head and Cover Parts List
Part Description Qty
1C Bolt, M6x12 6
2C Air duct 1
3C Intake Valve Guide 1
4C Lead Wind Cover 1
5C Stud, M6x109 2
6C Pin, Set 10x16 2
7C Gasket, Cylinder Head 1
8C Cylinder Head Assembly 1
Part Description Qty
9C Stud, M8x34 2
10C Spark Plug, F6TC 1
11C Exhaust Valve Guide 1
12C Circle Clip 1
13C Bolt 4
14C Gasket, Cylinder Head Cover 1
15C Cylinder Head Cover Assembly 1

Page 19SKU 66015 For technical questions, please call 1-800-444-3353.
Crankshaft, Piston, and Connecting Rod Assembly Diagram
Note: When ordering parts from this list, specify: Parts List D, CRANKSHAFT, PISTON, AND
CONNECTING ROD ASSEMBLY and the ITEM No.
Crankshaft, Piston, and Connecting Rod Parts List
Part Description Qty
1D Piston Ring (I) 1
2D Piston Ring (II) 1
3D Side Rail 2
4D Expander 1
5D Scraper Ring Set 1
6D Piston Ring Assembly 1
7D Piston Pin Circle Clip 2
8D Piston 1
9D Piston Pin 1
Part Description Qty
10D Connecting Rod 1
11D Connecting Rod Cover 1
12D Bolt 2
13D Connecting Rod Assembly 1
14D Woodruff Key 1
15D Drive Gear 1
16D Crankshaft 1
17D Timing Drive Gear 1
18D Crankshaft Assembly 1

Page 20SKU 66015 For technical questions, please call 1-800-444-3353.
Camshaft and Rocker Valve Assembly Diagram
Note: When ordering parts from this list, specify: Parts List E, CAMSHAFT AND ROCKER
VALVE ASSEMBLY and the ITEM No.
Camshaft and Rocker Valve Parts List
Part Description Qty
1E Lock Nut 2
2E Sleeve 2
3E Valve, Rocker 2
4E Bolt, Adjusting, Valve Gap 2
5E Valve, Rocker, Assembly 2
6E Pusher Guide 1
7E Pusher 2
8E Tappet 2
Part Description Qty
9E Spring, Extension 1
10E Camshaft Assembly 1
11E Valve, Exhaust 1
12E Valve, Intake 1
13E Spring, Valve 2
14E Spring Seat, Intake Valve 1
15E Spring Seat, Exhaust Valve 1
16E Cap 1