Page 1
9 HP RIDE-ON TRENCHER
Model
65162
SET UP, OPERATING, AND SERVICING
INSTRUCTIONS
WARNING!
IMPORTANT INFORMATION
The Hitch Coupler MUST be properly
secured to the hitch ball of the towing vehicle.
After assembly and attachment, pull up and
down on the Hitch Coupler to make sure the
hitch ball is tting snugly in the Hitch Coupler.
There must be no play between the hitch
ball and Hitch Coupler. If there is play, tighten
the Adjustment Nut until no play is present. If
the Adjustment Nut is too tight, the Handle
will not lock. Carefully read and follow
the complete instructions in this manual
BEFORE setup or use.
If the Coupler is not secured
properly, the ball could come loose
while the Log Splitter is in motion,
possibly causing property damage,
SERIOUS PERSONAL INJURY, or
DEATH.
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. 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Revised 11a
Page 2
CONTENTS
IMPORTANT SAFETY
INFORMATION ............................ 4
SET UP PRECAUTIONS .................... 4
OPERATING PRECAUTIONS ............ 5
SERVICE PRECAUTIONS ............. 6
REFUELING: .................................7
TRENCHER PRECAUTIONS ........ 7
BASIC SPECIFICATIONS ............. 8
CLEANING, MAINTENANCE, AND
LUBRICATION SCHEDULE .......... 21
AFTER 20 OPERATION HOUR
BREAK-IN PERIOD: ................21
AFTER EVERY 25 OPERATION
HOURS: ....................................21
AFTER EVERY 50 OPERATION
HOURS: ....................................21
AFTER EVERY 100
OPERATION HOURS: ..............21
AFTER EVERY 300
OPERATION HOURS: ..............21
PERIODICALLY: .........................21
UNPACKING .................................. 8
SET UP INSTRUCTIONS ............... 8
ASSEMBLY.........................................8
ATTACHING THE LEG ASSEMBLY 10
PURGING THE CYLINDER ..............12
OPERATING INSTRUCTIONS .... 12
STARTING THE ENGINE .................12
CHECKING ENGINE OIL LEVEL 12
ENGINE DIAGRAM ...................... 13
CHECKING FUEL LEVEL ........... 14
BREAK-IN PERIOD ....................14
EQUIPMENT OPERATION ...............15
MOVING THE TRENCHER ......... 16
TRANSPORTING THE
TRENCHER ..............................17
TECHNICAL SPECIFICATIONS .. 19
SERVICING .................................. 19
MAINTENANCE PROCEDURES .....19
ENGINE OIL CHANGE ...............19
AIR FILTER ELEMENT
MAINTENANCE .......................19
SPARK PLUG MAINTENANCE .. 20
FUEL FILTER REPLACEMENT
(IF EQUIPPED) .........................20
STORAGE ........................................21
LUBRICATION POINTS ...................22
TROUBLESHOOTING ...................... 23
PARTS LIST ................................. 25
GENERAL ASSEMBLY
DIAGRAM .................................. 26
CYLINDER HEAD PARTS LIST
& DIAGRAM .............................. 27
CRANK CASE PARTS LIST &
DIAGRAM .................................. 28
CRANK CASE COVER PARTS
LIST AND DIAGRAM ................. 29
CRANKSHAFT/PISTON PARTS
LIST & DIAGRAM ...................... 30
GAS DISTRIBUTION
ADJUSTMENT SYSTEM
PARTS LIST & DIAGRAM ......... 31
STARTER SUBASSEMBLY
PARTS LIST & DIAGRAM ......... 32
DIVERSION ASSEMBLY PARTS
LIST & DIAGRAM ...................... 33
Page 2SKU 65162 For technical questions, please call 1-800-444-3353.
Page 3
CARBURETOR PARTS LIST &
DIAGRAM .................................. 34
FLYWHEEL/COIL ASSEMBLY
PARTS LIST & DIAGRAM ......... 35
CONTROL SYSTEM PARTS
LIST & DIAGRAM ...................... 36
AIR CLEANER PARTS LIST &
DIAGRAM .................................. 37
MUFFLER PARTS LIST &
DIAGRAM .................................. 38
FUEL TANK PARTS LIST &
DIAGRAM .................................. 39
LIMITED 1 YEAR / 90 DAY
WARRANTY .............................. 40
EMISSION CONTROL SYSTEM
WARRANTY .............................. 40
Page 3SKU 65162 For technical questions, please call 1-800-444-3353.
Page 4
SAVE THIS MANUAL
Keep thi s man ual for th e safety
warnings and prec autions , asse mbly,
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.
IMPORTANT SAFETY
INFORMATION
In this manual, on the labeling,
and all other information
provided with this product:
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.
DANGER indicates
DANGER
situation which, if not
avoided, will result in death or
serious injury.
WARNING
WARNING
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
CAUTION
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
a hazardous
indicates a
with the safety
Notice
CAUTION
NOTICE is used to
address practices
not related to personal injury.
CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
WARNING! Read all instructions.
Failure to follow all instructions
listed below may result in re,
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
SET UP PRECAUTIONS
Gasoline fuel and fumes are 1.
ammable, and potentially explosive.
Use proper fuel storage and handling
procedures. Do not store fuel or
other ammable materials nearby.
Have multiple ABC class re 2.
extinguishers nearby.
This equipment has a spark 3.
arresting mufer included. A spark
arresting mufer is required by law
in California, on some US Forest
Service land, and possibly in other
areas or situations.
Set up and use only on a at, level, 4.
well-ventilated surface.
Page 4SKU 65162 For technical questions, please call 1-800-444-3353.
Page 5
Wear ANSI-approved safety goggles, 5.
heavy-duty work gloves, and dust
mask/respirator during set up and
use.
Use only oil and fuel recommended 6.
in the “Specications” section of this
manual.
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.
Keep children and observers 20 feet 2.
away from the equipment while it is
operating.
Tools for your model. Accessories
that may be suitable for one piece of
equipment may become hazardous
when used on another piece of
equipment.
Stay alert, watch what you are 7.
doing and use common sense when
operating a piece of equipment. Do
not use a piece of equipment while
tired or under the inuence of drugs,
alcohol or medication.
Do not overreach. Keep proper 8.
balance at all times. This enables
better control of the equipment in
unexpected situations.
Dress properly. Do not wear loose 9.
clothing or jewelry. Keep hair,
clothing and gloves away from
moving parts. Loose clothes, jewelry
or long hair can be caught in moving
parts.
Parts of the equipment, especially 10.
exhaust system components, get
very hot during use. Stay clear of hot
parts.
Do not leave the equipment 3.
unattended when it is running. Turn
off the equipment (and remove safety
keys, if available) before leaving the
work area.
Wear ANSI-approved safety goggles 4.
and hearing protection during use.
People with pacemakers should 5.
consult their physician(s) before
use. Electromagnetic elds 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.
Use only accessories that are 6.
recommended by Harbor Freight
Do not cover the engine or equipment 11.
during operation.
Keep the equipment, engine, and 12.
surrounding area clean at all times.
Use the equipment, accessories, etc., 13.
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.
Do not operate the equipment with 14.
known leaks in the engine’s fuel system.
Page 5SKU 65162 For technical questions, please call 1-800-444-3353.
Page 6
This product contains or, when 15.
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.)
When spills of fuel or oil occur, they 16.
must be cleaned up immediately.
Dispose of uids and cleaning
materials as per any local, state,
or federal codes and regulations.
Store oil rags in a bottom-ventilated,
covered, metal container.
Keep hands and feet away from 17.
moving parts. Do not reach over or
across equipment while operating.
Before use, check for misalignment 18.
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 use.
Many accidents are caused by poorly
maintained equipment.
Use the correct equipment for the 19.
application. Do not modify the
equipment and do not use the
equipment for a purpose for which it
is not intended.
SERVICE PRECAUTIONS
Before service, maintenance, or 1.
cleaning:
Turn the engine switch to its a.
“OFF” position.
Allow the engine to completely cool.b.
Then, remove the spark plug c.
wire(s) from the spark plug(s).
guards include mufer, air cleaner,
mechanical guards, and heat shields,
among other guards.
Do not alter or adjust any part of 3.
the equipment or its engine that
is sealed by the manufacturer
or distributor. Only a qualied
service technician may adjust
parts that may increase or
decrease governed engine speed.
Wear ANSI-approved safety goggles, 4.
heavy-duty work gloves, steel toe
work boots, dust mask/respirator and
hard hat during use and service.
Do not allow the hydraulic hose to 5.
come in contact with any hot part
of the unit. The hose might be
damaged, possibly causing it to burst
or leak under high pressure.
Maintain labels and nameplates 6.
on the equipment. These carry
important information. If unreadable
or missing, contact Harbor Freight
Tools for a replacement.
Have the equipment serviced by a 7.
qualied 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.
Store equipment out of the reach of 8.
children.
Follow scheduled engine and 9.
equipment maintenance.
Keep all safety guards in place and 2.
in proper working order. Safety
Page 6SKU 65162 For technical questions, please call 1-800-444-3353.
Page 7
Refueling:
Do not smoke, or allow sparks, 1.
ames, or other sources of ignition
around the equipment, especially
when refuelling.
Do not rell the fuel tank while the 2.
engine is running or hot.
do this type of work. To reduce your
exposure to these chemicals: work in
a well ventilated area, and work with
approved safety equipment, such as
those dust masks that are specially
designed to lter out microscopic
particles. (California Health & Safety
Code § 25249.5, et seq.)
Do not ll fuel tank to the top. Leave 3.
a little room for the fuel to expand as
needed.
Refuel in a well-ventilated area only.4.
TRENCHER PRECAUTIONS
Always make sure the hitch coupler 1.
is securely xed to the vehicle before
moving it. If the Coupler is not secured properly, the link could come
loose while the trailer is in motion,
possibly causing property damage,
SERIOUS PERSONAL INJURY, or
DEATH.
Contact local utility companies 2.
before beginning any project. Buried
utility lines may not be marked
and, if struck, can cause SERIOUS
PERSONAL INJURY or DEATH.
Never place your hands or body near 4.
a hydraulic uid leak. High-pressure
uid can be forced under the skin
resulting in serious injury.
Do not exceed 30 MPH when towing 5.
the Trencher.
Do not tow the Trencher on roads or 6.
highways. This product is not D.O.T.
compliant, and is not road legal.
SAVE THESE
INSTRUCTIONS.
WARNING: Some dust created by 3.
power sanding, sawing, grinding,
drilling, and other construction
activities, contains chemicals
known [to the State of California] to
cause cancer, birth defects or other
reproductive harm. Some examples
of these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and
cement or other masonry products
• Arsenic and chromium from
chemically treated lumber
Your risk from these exposures
varies, depending on how often you
Page 7SKU 65162 For technical questions, please call 1-800-444-3353.
Page 8
BASIC SPECIFICATIONS
Fuel
Type
Capacity 1.58 Gallons
Type SAE
Engine Oil
Capacity 1.2 Quarts
Hydraulic Oil 3.5 Gallons
Engine Speed 3,600 RPM
Engine Family 6CGP.2702GA
Tire Ination 65 PSI
Digging Depth 5-1/2 and 7 Feet Deep
Maximum Digging
Reach
Spool Valve Rated 10.6 G.P.M.
Pump Rated 2.7 G.P.M.
Boom Travel 60° Left/Right
Bucket Load Capacity 1.24 Cubic Feet
Hitch Ball size 1-7/8” Diameter
Note: Additional specications found
in the TECHNICAL ENGINE
SPECIFICATIONS chart in this
manual.
The emission control system for this
product’s 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.
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 qualied mechanic to allow
efcient high-altitude use and to prevent
damage to the engine and any other devices
used with this product.
86+ octane unleaded
gasoline
10W 30 above 32° F
5W30 at 32° F or below
8 Feet
UNPACKING
When unpacking, check to make sure
that the item is intact and undamaged. If
any parts are missing or broken, please call
Harbor Freight Tools at the number shown
on the cover of this manual as soon as
possible.
SET UP INSTRUCTIONS
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.
WARNING
Note: For additional information regarding
Risk of accidental
starting; resulting
in serious personal injury.
Turn the Power Switch of the
equipment to its “OFF”
position, wait for the engine to
cool, and unplug the spark
plug wire(s) before
assembling or making any
adjustments to the equipment.
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
Assembly
This equipment has a spark arresting 1.
mufer. A spark arresting mufer is
required by law in California, on some
US Forest Service land, and possibly
in other areas or situations.
Due to the size of the Trencher and 2.
its components, assistance may be
required during the entire assembly
process.
Use jacks (not included) to evenly 3.
raise the Frame Assembly (90)
& support with jack stands (not
included).
REV 09b, 09i
Page 8SKU 65162 For technical questions, please call 1-800-444-3353.
Page 9
Page 9SKU 65162 For technical questions, please call 1-800-444-3353.
Page 10
Mount both Axles (50) near the boom 4.
end of the frame and secure with
Lock Pins (82).
Boom
Pivot (38)
Clevis Pin
No. 1 (29)
Place a Tire (52) over the four studs 5.
on each Hub. Secure the Tires to
the Hubs, using four Lug Nuts (53)
per Tire. The lug nuts must be snug.
Inate the tires to 65 PSI.
Slightly raise the Jacks, remove the 6.
Jack Stands, then lower the Jacks.
Block the tires and tighten the Lug
Nuts to at least 90 Ft-Lbs.
Attach Seat (73) to the Seat Bottom 7.
Plate (10) and secure both Seat and
Plate to the post on top of Hydraulic
Oil Tank.
Attach the Control Support (3) to the 8.
Frame Assembly (90) using four Hex
Bolts (81).
NOTE: The Hydraulics of this unit are
tested before shipment. There
may be hydraulic uid present in
components. Assemble the unit in
an area that will not be damaged
by leaking hydraulic uid. It is
recommended that you wrap
rags securely over the Hydraulic
connectors on all the Cylinders during
assembly. Wear splash-resistant
ANSI approved safety goggles and
other protective gear to prevent injury
from leaking uid.
Attach the Main Boom (36) to the 9.
Boom Pivot (38) using the Pin (42)
through the bottom hole and Clevis
Pin No. 1 (29) through the upper
hole. Secure both pins with Hair Pin
Clip (31); Pin (42) requires one Cotter
pin on each end. See photo above
right.
Main
Boom
(36)
Pin
(42)
Mount the Boom Extension (34) to 10.
the Main Boom (36) using the Pin
(42), left, and Clevis Pin No. 1 (29),
top. Secure both pins with Hair Pin
Clip (31).
Attach the Hitch Coupler (58) to 11.
the Frame Assembly (90) under the
Engine (74) using Hex Bolts (75) and
Hex HD. Bolt (72).
Connect, tighten, and check all 12.
hydraulic hose ttings to the proper
connections, as shown in the Hose
Connection Diagram. Hoses and
ttings are numbered. Tighten all
ttings.
Open the Hydraulic Fluid Fill Plug 13.
(11). Top off the Hydraulic Fluid
Reservoir with high quality hydraulic
uid. Check that the Fluid level is
between the lines on the attached
Dipstick. Close the Hydraulic Fluid Fill
Plug securely.
Attaching the Leg Assembly
To use the Trencher, the Leg 1.
Assemblies must be installed next to
the Boom (36), and the Wheels and
Axles (50) moved to the rear.
REV 09i
Page 10SKU 65162 For technical questions, please call 1-800-444-3353.
Page 11
Hose Connection Diagram
Control Panel / Spool Valve (9)
Hydraulic Fluid
Reservoir
part of Frame (90)
Hydraulic
Pump (65)
Bucket
Control
Cylinder
7
2
Boom
Extension
Cylinder
8
3
Main Boom
Cylinder
9
4
5
10
Boom Swing
Cylinder
Clevis Pin No. 1
(29)
Pin
(42)
Hydraulic Fluid
Fill Plug (11)
Seat (73)
Engine (74)
Mount Hitch
Coupler (58)
Here
Hydraulic
Fluid
Reservoir
Control
Panel
(9)
Boom Extension (34)
Frame Assy. (90)
TOW CONFIGURATION
REV 09b, 11a
Page 11SKU 65162 For technical questions, please call 1-800-444-3353.
Page 12
Move the Trencher to the work area 2.
(See “Starting The Engine” - page
14).
Start the engine and use the Boom 3.
Controls to curl the bucket toward the
boom without touching the ground.
Moving the Bucket As sembly (32)
down to the ground will raise the
Frame Assembly (90). Lift the Tires
just off the ground and stop.
Ensure the controls will not be 4.
touched or bumped, and that the
Trencher will remain motionless.
Never place any part of your body
under the trencher.
With the Tires (52) off the ground, 5.
remove the Wheel and Axle (50)
to the operator’s left and replace
with the left side Extension Leg (19)
and Leg Assembly (24). Direct the
Extension Leg so it turns toward the
Bucket end of the Trencher. Secure
with Lock Pin No. 2 (82). Repeat
procedure for the right side. Raise
Bucket As sembly again to lower onto
Leg Assembly, and turn Engine off.
Using a jack and jack stands (not 6.
included), raise up the engine end of
the trencher and disconnect from the
towing hitch. Slide the Wheels and
Axles (50) into the engine end of the
Frame (90). Secure each axle with
Lock Pin No. 2 (82).
Press forward on the Main Boom 3.
Lever until the Main Boom is fully
raised. Then, press Forward on the
Boom Extension Lever until the Boom
is fully extended.
Press forward on the Bucket Lever 4.
until the bucket is fully extended. Pull
back on the lever to retract it fully.
Pull back on the Boom Extension 5.
Lever until the Boom is pulled back
all the way. Pull back on the Main
Boom Lever until the Main Boom is
lowered completely.
Adjust the boom back to its rest 6.
position and replace all locking
devices.
Shut off the Engine, check the 7.
Hydraulic Fluid level and rell as
necessary.
Note: The Fill Plug is vented. When 8.
tightening the Fill Plug, tighten it
securely then back it off slightly.
OPERATING INSTRUCTIONS
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.
Starting the Engine
Purging the Cylinder
Remove all Safety Locking Pins (15), 1.
disengage the Safety Latch (41) and
loosen Hydraulic Tank Fill Plug (11).
Press forward on the Boom Swing 2.
Lever (located on Control Panel (9)
until the Boom stops moving, then
pull back on it until it moves in the
other direction. Center the Boom.
Inspect engine and equipment
looking for damaged, loose,
and missing parts before
set up and starting. If any
REV 09i
Page 12SKU 65162 For technical questions, please call 1-800-444-3353.
Page 13
COMPONENTS & CONTROL LOCATIONS
2.
COMPONENTS & CONTROL LOCATIONS
THROTTLE LEVER
MUFFLER
SPARK PLUG
AIR CLEANER
FUEL VALVE LEVER
CHOKE LEVER
RECOIL STARTER
STARTER GRIP
IGNITION SWITCH
FUEL FILLER CAP
FUEL TANK
OIL DRAIN PLUG
OIL FILLER CAP/DIPSTICK
ENGINE DIAGRAM
Page 13SKU 65162 For technical questions, please call 1-800-444-3353.
Page 14
problems are found, do not use
equipment until xed properly.
gasoline according to fuel stabilizer
directions.
Checking Engine Oil Level
CAUTION! Your Warranty is VOID if the
engine’s crankcase is not properly
lled 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.
Clean the Oil Filler Cap and the area 1.
around it.
Remove the Oil Filler Cap/Dipstick. 2.
Read the engine service manual for
the proper way to check the oil level.
If the oil level is low, add the proper 3.
type and weight. See information
below.
Oil type:
32° F or above = SAE 10W-30
Below 32° F = SAE 5W-30.
Replace the Oil Filler Cap.4.
Fill the Fuel Tank to about 1 inch 3.
under the lip of the gasoline tank
with the stabilized unleaded gasoline
mixture.
Then replace the Fuel Filler Cap.4.
Start Procedure
Before starting the engine:
Follow the Set Up a.
Instructions to prepare the
equipment.
Inspect the equipment and b.
engine.
Fill the engine with the c.
proper amount and type of
both fuel and oil.
Read the Equipment d.
Operation section that
follows.
Turn the fuel valve lever to its 1.
“OPEN” position.
CAUTION! Do not run the engine with too
little or too much oil. The engine will
be permanently damaged.
Checking Fuel Level
WARNING! To prevent re,
shut the engine off and wait
for it to cool before adding
fuel. Do not smoke.
Clean the Fuel Filler Cap and the 1.
area around it.
To Check the fuel level, unscrew and 1.
remove the Fuel Filler Cap.
Mix fuel stabilizer (not included) 2.
with 86 octane (or better) unleaded
Turn the ignition switch to its ON or 2.
RUN position.
Then, turn the engine choke lever to 3.
its “CHOKE” position. Set the choke
lever in the “RUN” position when
starting a warm engine.
Grasp the starter handle, and pull 4.
slowly until resistance is felt. While
holding the handle, allow the starter
rope to rewind slowly. Then, pull the
starter handle with a rapid, full arm
stroke. Once again while holding
the handle, allow the rope to rewind
slowly. Repeat as necessary, until
the engine starts.
Page 14SKU 65162 For technical questions, please call 1-800-444-3353.
Page 15
After the engine starts and warms 5.
up, slowly move the choke lever to its
“RUN” position.
Cylinder (26)
Pin
IMPORTANT: Allow the engine to 6.
run at no load for ve minutes with no
load after each start-up so that the
engine can stabilize.
Break-in Period
Breaking-in the engine will help to 1.
ensure proper equipment and engine
operation.
The operational break-in period will 2.
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.
The maintenance break-in period will 3.
last about 20 hours of use. After this
period:
Change the engine oil.•
Main
Boom
(36)
Cylinder (26)
Boom
Pivot
(38)
Pin
Under normal operating conditions
subsequent maintenance follows
the schedule explained in the
MAINTENANCE AND SERVICING
section.
Equipment Operation
This Trencher can be used with two 1.
arm positions. See illustrations to the
right.
Main
Boom
(36)
Boom
Pivot
(38)
REV 09f
Page 15SKU 65162 For technical questions, please call 1-800-444-3353.
Page 16
While the end of the boom is being 2.
supported; remove the Pin (29), align
the cylinder with the appropriate hole,
insert the Pin (29), and secure it with
the Hair Pin Clip (31).
With the Engine running, sit in the 3.
Operator Seat (73) and pull the Boom
Lever control backward to raise the
Main Boom (36).
Pull back on the Boom Extension 4.
handle control to raise the Boom
Extension (34).
Push forward on the Bucket handle 5.
control to open the Bucket Assembly.
(32).
Push forward on the Boom handle 6.
to lower the Boom until the Bucket
reaches the ground.
Pull back on the Bucket Lever control 7.
until the Bucket scoops up the dirt.
Pull back on both the Boom and 8.
Boom Extension control levers to
raise the load.
Press in, or push out, the Boom 9.
Swing control levers to move the
Bucket left or right. Note: The Boom’s
travel is 60 degrees left and 60
degrees right.
Press in on the Bucket control handle 10.
to dump the load.
Moving the Trencher
One method for moving the trencher 11.
around the work area is by using the
Boom to push the Trencher across
the ground.
12. WARNING: This technique
can be difcult to control and
should only be attempted by an
experienced operator. The stability
of the Trencher is dependent on the
stability of the ground; if you choose
to move the Trencher in this way, do
so at your own risk. Do not use the
Trencher near ditches or drop-offs.
Swing the Bucket inward so that the 13.
front of the bucket, not the scoop, is
facing downward. Press the Bucket
down onto a solid piece of ground
and press down hard enough to raise
the front legs off the ground.
Carefully operate the controls to 14.
move the boom and slowly roll
yourself in the desired direction. Be
certain that the Tires and the new
resting places for the Legs all remain
on solid, stable ground.
Controls operate by
pushing in or pulling out
Bucket: IN - OUT
Boom Extension: IN - OUT
Boom: IN - OUT
Boom Swing: LEFT - RIGHT
REV 09i
Page 16SKU 65162 For technical questions, please call 1-800-444-3353.
Page 17
After you have repositioned the 15.
Trencher, raise the Boom to lower the
outriggers back onto the ground. The
procedure can be repeated to move
farther.
Transporting the Trencher
When transporting the Trencher, 19.
make sure your hitch (not included)
is compatible with the Hitch Coupler
(92). Follow all of the safety warnings
for towing in your vehicle’s manual.
The Hitch Coupler will only accept a 2
inch hitch ball.
Lock the Boom in Place. Use the 16.
Bucket Lever to line the hole on the
Bucket (32) up with the hole on the
Boom Extension (34). Insert a Safety
Locking Pin (15) and secure with a
Ball Pin.
Use the Boom Swing Lever to line up 17.
the hole in the Boom Pivot (38) with
the Hole in the Frame (90). Insert a
Safety Locking Pin (15) and secure
with a Ball Pin.
Safety Locking
Pin (15)
To reduce friction between the hitch 20.
ball and Hitch Coupler (58), apply a
layer of heavy weight grease over the
hitch ball.
See illustration below. Temporarily 21.
remove the “R” Pin and Safety Pin.
Then, pull up on the Trigger and lift
up on the Handle.
R-Pin
Safety Pin
Hitch
Coupler (58)
Safety
Latch (41)
Put the Boom into the Shallow 18.
Position and raise it until the pin on
the side of the Main Boom (36) is
close enough for the Safety Latch
(41) to swing over it. To use the
Safety Latch, pull out on the handle,
swing it over the pin, and lower it over
the pin, locking it in place.
Place the Hitch Coupler (58) over 22.
the vehicle’s hitch ball, pull the
trigger, push down on the Handle,
and release the Trigger, making
sure it locks in the slot. Pull up and
down on the Coupler to make sure
the hitch ball is tting snugly in the
Coupler. There should be no play
between the hitch ball and Coupler. If
there is play, tighten the Adjustment
Nut until no play is present. If the
Adjustment Nut is too tight, the
Handle will not lock. WARNING! If
the Hitch Coupler is not secured
properly, the ball could come loose
while the Trencher is in motion,
Page 17SKU 65162 For technical questions, please call 1-800-444-3353.
Page 18
possibly causing property damage or
SERIOUS PERSONAL INJURY.
Trigger
Handle
Adjustment
Hitch Ball
(Not Included)
Make sure to attach each side of 23.
the Safety Chain (56) equally to
the towing vehicle’s rear bumper or
frame.
Nut
Safety
Chain
(56)
CAUTION! Care must be taken 24.
when backing up the Trencher. Only
back up the Trencher on a straight
path. If the Trencher is allowed
to turn off the straight path while
backing up, the Trencher could
jackknife, causing severe damage
to the Trencher and to the towing
vehicle.
To prevent accidents, turn off the 25.
engine, wait for it to cool, and
disconnect its spark plug wire after
use. Clean external parts with clean
cloth, then store the equipment out of
children’s reach.
Page 18SKU 65162 For technical questions, please call 1-800-444-3353.
Page 19
TECHNICAL
Maintenance Procedures
SPECIFICATIONS
Single Cylinder 4 stroke
Engine Type
Battery Required 12V 18Ah
Bore x Stroke 77mm x 58mm
Displacement 270cc
Compression Ratio 8.2:1
Rotation viewed from PTO
(power takeoff - the output shaft)
Fuel
Engine Oil
Spark Plug
Valve
Clearance
Speed
Type
Capacity 1.58 Gallons
Type SAE
Capacity 1.2 Quarts
Type
Gap 0.028 - 0.031”
Intake 0.15 ± 0.02 mm
Exhaust 0.20 ± 0.02 mm
Idle 1,400 ± 150 RPM
Maximum 3600 RPM
OHV, 9HP Air Cooled,
Recoil Start
Counterclockwise
86+ octane unleaded
gasoline
10W30 above 32° F
5W30 at 32° F or below
NGK®, BPR7ES
LD®, F7TC
Many maintenance procedures,
including any not detailed
in this manual, will need to
be performed by a qualied
technician for safety. If you
have any doubts about your
ability to safely service the
equipment or engine, have a
qualied technician service the
equipment instead.
Engine Oil Change
CAUTION! Oil is very hot during
operation and can cause burns. Wait
for engine to cool before changing oil.
Place a drain pan (not included) 1.
underneath the crankcase’s drain
plug.
Remove the drain plug and drain the 2.
oil out. Recycle used oil.
Replace the drain plug and tighten it.3.
SERVICING
Risk of serious
WARNING
from accidental starting. Turn
the Power Switch of the
equipment to its “OFF”
position, wait for the engine to
cool, and unplug the spark
plug wire(s) before performing
any inspection, maintenance,
or cleaning procedures.
Damaged equipment can fail,
causing serious personal
injury. Do not use damaged
equipment. If abnormal noise,
vibration, or excess smoking
occurs, have the problem
corrected before further use.
Rell the oil to the proper level 4.
following the instructions under the
Starting the Engine section.
personal injury
Air Filter Element Maintenance
The air cleaner cover is held in place 1.
by a wing nut or clamps. Remove it.
Remove the air lter element.2.
Cleaning:3.
For “paper” lter elements: a.
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 air lter. If this does not get the
lter reasonably clean, replace it.
REV 09b, 09f
Page 19SKU 65162 For technical questions, please call 1-800-444-3353.
Page 20
For foam lter elements: b.
Wash the element in warm water
and mild detergent several times.
Rinse. Squeeze out excess water
and allow it to dry completely. Soak
the lter in lightweight oil briey, then
squeeze out the excess oil.
Install the new lter or the cleaned 4.
lter. Secure the Air Cleaner Cover
before use.
Spark Plug Maintenance
Disconnect spark plug wire from 1.
end of plug. Clean out debris from
around spark plug.
Using a spark plug wrench, remove 2.
the spark plug.
Inspect the spark plug: 3.
If the electrode is oily, clean it using a
clean, dry rag.
If the electrode has deposits on it,
polish it using emery paper.
If the white insulator is cracked or
chipped, the spark plug needs to be
replaced.
the spark plug and reattach the wire
securely.
Fuel Filter Replacement (if equipped)
WARNING! RISK OF FIRE
OR EXPLOSION. Replace the
fuel lter in a well-ventilated
area away from ignition
sources. Do not smoke.
Wait for engine to cool before 1.
proceeding.
Wear protective gear including, ANSI-2.
approved safety goggles, NIOSHapproved dust mask/respirator, and
nitrile gloves.
Wipe Fuel Cap and top of Fuel Tank.3.
Remove Fuel Filter (6R). Reattach 4.
Fuel Cap to prevent debris from
entering into Gas Tank.
Remove Buel Strainer. Wash with 5.
warm water and light detergent.
Flush and let dry.
Reinstall in the Gas Tank.6.
When installing a new spark 4.
plug, adjust the plug’s gap to the
specication on the Technical
specication chart. Do not pry
against the electrode, the spark plug
can be damaged.
Install the spark plug into the engine. 5.
Gasket-style: Finger-tighten until the
gasket contacts the cylinder head,
then turn about 1/2-2/3 more.
Non-gasket-style: Finger-tighten until
the plug contacts the head, then turn
about 1/16 more.
Apply dielectric spark plug boot 6.
protector (not included) to the end of
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: These procedures are in addition to
the regular checks and maintenance
explained as part of the regular
Page 20SKU 65162 For technical questions, please call 1-800-444-3353.
Page 21
operation of the engine and
equipment.
After 20 Operation Hour Break-in
Period:
Change engine oil.a.
After Every 25 Operation Hours:
Clean/replace air lter element.a.
Inspect/clean spark plug.b.
Blow out water lters.c.
After Every 50 Operation Hours:
Change engine oil.a.
Replace fuel lter (if equipped).b.
After Every 100 Operation Hours:
Replace spark plug.a.
Replace air lter element.b.
When the equipment is to remain idle 2.
for longer than 20 days, prepare the
engine for storage as follows:
Change engine oil and empty fuel a.
tank.
Either leave fuel tank empty or b.
rell fuel tank with fresh unleaded
gasoline mixed with a fuel stabilizer
intended for long term engine
storage (not included). After lling,
run engine for about 5-10 minutes
to circulate the treated gasoline
through the carburetor. Wait for
engine to cool before proceeding.
Clean out area around spark plug. c.
Remove spark plug and pour one
tablespoon of engine oil into cylinder
through spark plug hole.
Replace spark plug, but leave spark d.
plug wire disconnected.
Note: All maintenance procedures
scheduled for 25, 50, and 100
operation hours should be performed
at least yearly.
After Every 300 Operation Hours:
Clean fuel tank and carburetor.a.
Clean carbon build-up from b.
combustion chamber.
Periodically:
Periodically, apply grease to all boom 1.
axis-movement points using a grease
gun, at the points shown in the
illustration on the next page.
Storage
Wait for engine to cool, then clean 1.
engine with clean cloth.
Pull recoil starter to distribute oil e.
in cylinder. Pull one full length of
Recoil Starter Rope.
Disconnect battery cables (if f.
equipped).
Apply a thin coat of rust preventive oil 3.
to all metal parts.
Cover and store in a dry, well-4.
ventilated area out of reach of
children.
Before starting the engine after 5.
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
properly.
Page 21SKU 65162 For technical questions, please call 1-800-444-3353.
Page 22
Lubrication Points
(38)
(36)
Page 22SKU 65162 For technical questions, please call 1-800-444-3353.
Page 23
Troubleshooting
Problem Possible Causes Probable Solutions
Engine will not start FUEL RELATED:
No fuel in tank or fuel valve closed.1.
Choke not in start position, 2.
especially with cold engine.
Low quality or deteriorated old 3.
gasoline.
Carburetor not primed. 4.
Dirty fuel passageways blocking 5.
fuel ow.
Carburetor needle stuck. Fuel can 6.
be smelled in the air.
Too much fuel in chamber. This can 7.
be caused by the carburetor needle
sticking.
IGNITION (SPARK) RELATED:
Spark plug wire not connected 1.
securely.
Spark plug electrode wet or dirty.2.
Incorrect spark plug gap.3.
Spark plug wire broken.4.
Incorrect spark timing or faulty 5.
ignition system.
COMPRESSION RELATED:
Cylinder not lubricated. Problem 1.
after long storage periods.
Loose or broken spark plug. 2.
(Hissing noise will occur when
trying to start.)
Loose cylinder head or damaged 3.
head gasket. (Hissing noise will
occur when trying to start.)
Engine valves or tappets 4.
misadjusted or stuck.
FUEL RELATED:
Fill fuel tank and open fuel valve.1.
Move choke to start position if 2.
engine is cold.
Use only fresh 86+ octane 3.
unleaded gasoline.
Prime carburetor by pressing 4.
priming bulb (if equipped).
Clean out passageways using 5.
fuel additive. Heavy deposits may
require further cleaning.
Gently6. tap side of carburetor oat
chamber with screwdriver handle.
Turn Fuel Valve to its off position. 7.
Turn choke to run position.
Remove spark plug and pull the
start handle several times to air out
the chamber. Reinstall spark plug
and set choke to start position.
IGNITION (SPARK) RELATED:
Connect spark plug wire properly. 1.
Clean spark plug.2.
Correct spark plug gap.3.
Replace spark plug wire.4.
Have qualied technician diagnose/5.
repair ignition system.
COMPRESSION RELATED:
Pour tablespoon of oil into spark 1.
plug hole. Crank engine a few
times and try to start again.
Tighten spark plug. If that does 2.
not work, replace spark plug. If
problem persists, may have head
gasket problem, see #3.
Tighten head. If that does not 3.
remedy problem, replace head
gasket.
Adjust valve clearance. If that does 4.
not work, clean or replace valves/
tappets.
Follow all safety precautions whenever diagnosing or servicing the
equipment or engine.
Page 23SKU 65162 For technical questions, please call 1-800-444-3353.
Page 24
Troubleshooting
Problem Possible Causes Probable Solutions
Trencher loses
performance
Engine misres Spark plug wire loose.1.
Engine stops
suddenly
Engine knocks Old or low quality gasoline. 1.
Engine backres Impure or low quality gasoline. 1.
Mushy hydraulic operation.1.
Oil Leaks.2.
Incorrect spark plug gap or 2.
damaged spark plug.
Defective spark plug wire.3.
Old or low quality gasoline. 4.
Incorrect compression.5.
Low oil shutdown. 1.
Fuel tank empty or full of impure or 2.
low quality gasoline.
Defective fuel tank cap creating 3.
vacuum, preventing proper fuel
ow.
Faulty magneto.4.
Engine overloaded. 2.
Incorrect spark timing, deposit 3.
buildup, worn engine, or other
mechanical problems.
Engine too cold. 2.
Intake valve stuck or overheated 3.
engine.
Bleed hydraulic system. Replace 1.
hydraulic lter/celan strainer.
Tighten/replace hose.2.
Check wire connections.1.
Re-gap or replace spark plug. 2.
Replace spark plug wire.3.
Use only fresh 86+ octane 4.
unleaded gasoline.
Diagnose and repair compression. 5.
Fill engine oil to proper level. 1.
Check engine oil before EVERY
use.
Fill fuel tank with fresh 86+ octane 2.
unleaded gasoline.
Test/replace fuel tank cap. 3.
Have qualied technician service 4.
magneto.
Fill fuel tank with fresh 86+ octane 1.
unleaded gasoline.
Do not exceed equipment’s load 2.
rating.
Have qualied technician diagnose 3.
and service engine.
Fill fuel tank with fresh 86+ octane 1.
unleaded gasoline.
Use cold weather fuel and oil 2.
additives to prevent backring.
Have qualied technician diagnose 3.
and service engine.
Follow all safety precautions whenever diagnosing or servicing the
equipment or engine.
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 24SKU 65162 For technical questions, please call 1-800-444-3353.
Page 25
PARTS LIST
PART # DESCRIPTION Q'TY PART # DESCRIPTION Q'TY
1 NUT 3/8 " 4 51 HAIR PIN CLIP 1/8*1-3/4” “ 2
2 SPRING WASHER 3/8 " 10 52 TIRE 2
3 CONTROL SUPPORT 1 53 LUG NUT 2
4 WASHER 3/8 " 9 54 OUTLET HOSE 1
5 HEXHD.BOLT 3/8*1-1/8" " 8 55 HOSE CLAMP 2
6 SCUTCHEON 1 56 SAFETY CHAIN 1
7 HOSE ASSEMBLY NO.6 1 57 HEXNUT 3/8” 3
8 HEX CONNECTOR 10 58 HITCH COUPLER 1
9 CONTROL VALVE 1 59 NUT ½ 1
10 SEAT BOTTOM 1 60 HEX HD.BOLT 3/8*2-3/4” “ 2
11 FILL PLUG/DIPSTICK 1 61 HEX HD.BOLT3/8*3-1/2” “ 1
12 SPRING WASHER 5/16 " 17 62 HEX HD.BOLT5/16*1” “ 2
13 ENTER HOSE ASSEMBLY NO.1 1 63 WASHER 6
14 HEX BOLT 3/8"*1" 2 64 90 ELBOW FITTING NO.4 1
15 SAFETY LOCKING PIN 2 65 HYDRAULIC PUMP 1
16 SPRING HAIR PIN CLIP 8 66 90 DEG. ELBOW FITTING NO.3 1
17 HOSE ASSEMBLY NO.4 1 67 PUMP KEY 1
18 HOSE ASSEMBLY NO.9 1 68 COUPING-PUMP SIDE 1
19 EXTENSION LEG(RIGHT) 1 69 HEX SCREW 2
20 LOCK PIN NO.1 4 70 MOUNTING BRACKET - PUMP 1
21 HOSE ASSEMBLY NO.5 1 71 ENGINE KEY 1
22 HOSE ASSEMBLY NO.10 1 72 HEX HD.BOLT 5/16*1-3/4”” 4
23 CONTROL PANEL 1 73 SEAT 1
24 LEG ASSEMBLY 2 74 ENGINE 1
25 90 ELBOW FITTING NO.1 8 75 HEX HD.BOLT 5/16” 4
26 CYLINDER 4 76 COUPING-ENGINE SIDE 1
27 CONNECTING ROD 2 77 HAIR PIN CLIP 1
28 CONNECTING ROD 2 78 WHEEL 1
29 CLEVIS PIN NO.1 8 79 LOCK PIN 1
30 BUSHING 1 80 WEIGHT BLOCK 1
31 HAIR PIN CLIP 3/16"*2-5/16" 15 81 HEX HD.BOLT 5/8”*4-3/4” 1
32 BUCKET ASSEMBLY 1 82 LOCK PIN NO.2 2
33 LUBRICATION FITTING 11 83 WASHER 5/8 1
34 BOOM EXTENSION 1 84 NUT 5/8 “ 1
35 CLEVIS PIN NO.2 2 85 90 ELBOW FITTING NO.2 1
36 MAIN BOOM 1 86 HEX HD.BOLT 5/16”*1-1/8” 4
37 LUBRICATION FITTING 6 87 “O” RING SEAL 1
38 BOOM PIVOT 1 88 OIL FILTER 1
39 HOSE ASSEMBLY NO.3 1 89 OIL PLUG R3/8 “ 1
40 HOSE ASSEMBLY NO.8 1 90 FRAME ASSEMBLY 1
41 SAFETY LATCH 1 91 CLEVIS PIN NO.3 1
42 PIN 2 92 WASHER 2
43 SPRING 1 93 PIVOT PIN 1
44 WASHER 15/16 “ 1 94 BUSHING 1
45 EXTENSION LEG (LEFT) 1 95 SNAP SPRING 1
46A HOSE ASSEMBLY NO.2 2 96 SPRING WASHER 1/4” 2
47 HEX NUT5/16 “ 5 97 HEXHD.BOLT 1/4”*1/2” 2
48 HEX HD.BOLT 5/16”*3/4” 3 98 SPRING HAIR PIN CLIP 1
49 COVER 1 99 SPIDER 1
50 AXLE& HUB ASSEMBLY 2
REV 09b; 09f, 09i
Page 25SKU 65162 For technical questions, please call 1-800-444-3353.
Page 26
GENERAL ASSEMBLY DIAGRAM
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.
REV 09f
Page 26SKU 65162 For technical questions, please call 1-800-444-3353.
Page 27
CYLINDER HEAD PARTS LIST & DIAGRAM
Part # Description Qty
1B Cylinder Head Assembly 1
2B Intake Valve Guide 1
3B Exhaust Valve Guide 1
4B Valve Guide Clip 1
5B Cover 1
6B Packing 1
7B Breathing Tube 1
8B Spark Plug 1
9B Cylinder Gasket 1
10B Mufer Gasket 1
11B Pin 2
12B Bolt 6x14 4
13B Bolt 8x55 4
14B Intake Bolt 2
15B Exhaust Bolt 2
16B Intake Valve Seat 1
17B Exhaust Valve Seat 1
18B Cylinder Head 1
Note: When ordering replacement parts from this diagram, the “B” sufx must be includ-
ed in order to get the correct part.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 27SKU 65162 For technical questions, please call 1-800-444-3353.
Page 28
CRANK CASE PARTS LIST & DIAGRAM
Part # Description Qty
1C Crank Case Assembly 1
2C Oil Level Switch 1
3C Governor Gear Assembly 1
4C Weight 2
5C Governor Gear 1
6C Weight Pin 2
7C Slider 1
8C Shaft Arm 1
9C Drain Plug 2
10C Washer 2
11C Washer 2
12C Clip 1
Part # Description Qty
13C Ball Bearing 1
14C Oil Seal 1
15C O-ring 1
16C Nut 1
17C Washer 1
18C R-pin 1
19C Bolt 6x12 3
20C Shaft 1
21C Governor Assembly 1
22C Oil Alarm 1
23C Bolt 1
Note: When ordering replacement parts from this diagram, the “C” sufx must be includ-
ed in order to get the correct part.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 28SKU 65162 For technical questions, please call 1-800-444-3353.
Page 29
CRANK CASE COVER PARTS LIST AND DIAGRAM
Part # Description Qty
1D Bolt 6
2D Oil Stick 1
3D Gasket 2
4D Cover 1
5D Oil Seal 1
6D Bearing 1
7D Pin 2
8D Oil Filler Cap 1
9D Gasket Case Cover 1
10D Oil Fill Assembly 1
11D Cap Assembly 1
Note: When ordering replacement parts from this diagram, use the sufx “D”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 29SKU 65162 For technical questions, please call 1-800-444-3353.
Page 30
CRANKSHAFT/PISTON PARTS LIST & DIAGRAM
Part # Description Qty
1E Ring Set 1
2E Piston 1
3E Pin 1
4E Rod Assembly 1
5E Crankshaft Assembly 1
6E Bolt 2
7E Clip 2
8E Timing Gear 1
9E Gear 1
10E Crankshaft 1
11E First Ring 1
12E Second Ring 1
13E Oil Ring 2
14E Bushing Ring 1
15E Connecting Rod 1
16E Connecting Rod Bearing Cap 1
17E Key 1
Note: When ordering replacement parts from this diagram, use the sufx “E”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 30SKU 65162 For technical questions, please call 1-800-444-3353.
Page 31
GAS DISTRIBUTION ADJUSTMENT SYSTEM PARTS LIST &
DIAGRAM
Part # Description Qty
1F Nut 2
2F Rocker Arm 2
3F Valve Rocker 2
4F Pivot Bolt 2
5F Plate Assembly 1
6F Block Guide 2
7F Push Rod Guide 1
8F Push Rod 2
9F Valve Lifter 2
10F Valve Cap 2
11F Valve Spring Retainer 2
12F Valve Spring 2
13F Guide Seal 1
Part # Description Qty
14F Camshaft Assembly 1
15F Reducer Pin 1
16F Reducer 1
17F Matching Block Pin 2
18F Matching Block 1
19F Flying Block Pin 1
20F Spring Pin 1
21F Flying Block Spring 1
22F Flying Block 1
23F Camshaft 1
24F Exhaust Valve 1
25F Intake Valve 1
Note: When ordering replacement parts from this diagram, use the sufx “F”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 31SKU 65162 For technical questions, please call 1-800-444-3353.
Page 32
STARTER SUBASSEMBLY PARTS LIST & DIAGRAM
Part # Description Qty
1G Starter Assembly 1
2G Set Screw 1
3G Ratchet Guide 1
4G Friction Spring 1
5G Starter Ratchet 2
6G Return Spring 2
7G Recoil Starter Reel 1
8G Recoil Starter Spring 1
9G Recoil Starter Knob 1
10G Fan Cover 1
11G Rope 1
12G Bolt 6x8 3
13G Bolt 6x10 4
14G Fan Cover 1
15G Switch Assembly 1
16G Recoil Starter 1
17G Fan Cover 1
18G Stop Switch Assembly 1
Note: When ordering replacement parts from this diagram, use the sufx “G”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 32SKU 65162 For technical questions, please call 1-800-444-3353.
Page 33
DIVERSION ASSEMBLY PARTS LIST & DIAGRAM
Part # Description Qty
1H Bolt 6x20 1
2H Side Plate 1
3H Bolt 6x8 2
4H Shroud 1
5H Side Plate 1
6H Grommet 1
Note: When ordering replacement parts from this diagram, use the sufx “H”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 33SKU 65162 For technical questions, please call 1-800-444-3353.
Page 34
CARBURETOR PARTS LIST & DIAGRAM
Part # Description Qty
1J Carburetor Assembly 1
2J Carburetor 1
3J Main Nozzle 1
4J Main Jet 1
5J Float Valve 1
6J Valve Set Spring 1
7J Float 1
8J Float Pin 1
9J Oil Cup Gasket 1
10J Oil Cup 1
11J Gasket Bolt 1
12J Bolt 1
13J Drain Bolt 1
14J Drain Bolt Gasket 1
15J Fuel Strainer Cup 1
16J Fuel Strainer Cup Packing 1
17J Fuel Packing 1
18J Lever 1
Part # Description Qty
19J Lever Spring 1
20J Setting Plate 1
21J Screw 3x8 2
22J Jet Set 1
23J Pilot Jet Set 1
24J Choke Lever Assembly 1
25J Choke Lever 1
26J Choke Lever Pin 1
27J Choke Set 1
28J Screw 1
29J Screw Spring 1
30J Throttle Stop Screw 1
31J Packing 1
32J Carburetor Packing 1
33J Carburetor Insulation 1
34J Packing 1
35J Throttle Valve 1
Note: When ordering replacement parts from this diagram, use the sufx “J”.
Page 34SKU 65162 For technical questions, please call 1-800-444-3353.
Page 35
FLYWHEEL/COIL ASSEMBLY PARTS LIST & DIAGRAM
Part # Description Qty
1K Ignition Assembly 1
2K Ignition Coil 2
3K Noise Suppression Cap Assembly 1
4K Stop Switch Cord 1
5K Bolt 6x30 2
6K Flywheel Cover 1
7K Charge Coil Assembly 1
8K Cooling Fan 1
9K Starter Pulley 1
10K Nut 1
11K Flywheel 1
12K Charge Coil 1
13K Bolt 6x35 2
14K Cord Clamp 1
15K Bolt 6x8 1
Note: When ordering replacement parts from this diagram, use the sufx “K”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 35SKU 65162 For technical questions, please call 1-800-444-3353.
Page 36
CONTROL SYSTEM PARTS LIST & DIAGRAM
Part # Description Qty
1M Bolt 2
2M Governor Spring 1
3M Bolt 1
4M Governor Arm 1
5M Nut 1
6M Throttle Return Spring 1
7M Linkage 1
8M Control Assembly 1
9M Nut 1
10M Fixing Plate 1
11M Washer 1
Part # Description Qty
12M Washer 1
13M Retainer Assembly 1
14M Spring 1
15M Screw 5x35
16M Cable Return Spring 1
17M Control Handle 1
18M Screw 5x25 1
19M Back Plate 1
20M Screw 4x6 1
21M Locking Ring 1
22M Clip 1
Note: When ordering replacement parts from this diagram, use the sufx “M”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 36SKU 65162 For technical questions, please call 1-800-444-3353.
Page 37
AIR CLEANER PARTS LIST & DIAGRAM
Part # Description Qty
1N Air Cleaner Assembly 1
2N Elbow 1
3N Short Collar 2
4N Long Collar 2
5N Elbow Packing 1
6N Bolt 6x20 1
7N Nut 6mm 2
8N Nut 2
9N Air Cleaner Cover 1
Part # Description Qty
10N Air Cleaner Element Assembly 1
11N Grommet 1
12N Outer Filter 1
13N Element 1
14N Base 1
15N Air Cleaner Assembly 1
16N Cover 1
17N Screw 2
Note: When ordering replacement parts from this diagram, use the sufx “N”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 37SKU 65162 For technical questions, please call 1-800-444-3353.
Page 38
MUFFLER PARTS LIST & DIAGRAM
Part # Description Qty
1P Mufer 1
2P Nut 8mm 1
3P Mufer Cover 1
4P Screw 5x8 4
5P Mufer Assembly 1
6P Mufer Case 1
Note: When ordering replacement parts from this diagram, use the sufx “P”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 38SKU 65162 For technical questions, please call 1-800-444-3353.
Page 39
FUEL TANK PARTS LIST & DIAGRAM
Part # Description Qty
1R Clip Tube 2
2R Joint Assembly 1
3R Fuel Tank 1
4R Fuel Filler Assembly 1
5R Fuel Cap Gasket 1
6R Fuel Strainer 1
7R Bolt 6x25 1
8R Joint Packing 1
9R Nut 6mm 2
10R Fuel Line 1
11R Fuel Cap 1
12R Fuel Tank Assembly 1
13R Adapter/Connector 1
Note: When ordering replacement parts from this diagram, use the sufx “R”.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
Page 39SKU 65162 For technical questions, please call 1-800-444-3353.
Page 40
LIMITED 1 YEAR / 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
for a period of ninety days from date of
purchase that the engine/motor, the belts
(if so equipped), and the blades (if so
equipped) are free of defects in materials
and workmanship. Harbor Freight Tools
also warrants to the original purchaser,
for a period of one year from date of purchase, that all other parts and components
of the product are free from defects in materials and workmanship (90 days if used
by a professional contractor or if used as
rental equipment). This warranty does not
apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents,
repairs or alterations outside our facilities,
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 merchan-
dise. If our inspection veries 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 specic legal
rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box
6009 • Camarillo, CA 93011 • (800)
444-3353
EMISSION CONTROL
SYSTEM WARRANTY
California and United States Emission 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 emission control system warranty on your 1995 and later Small Off-Road Engine
(herein engine). In California, the engine must be designed, built
and equipped to meet the State’s stringent anti-smog standards.
Elsewhere within the United States, new off-road, spark-ignition
engines certied for model year 1997 and later, must meet similar
standards set forth by the EPA. HFT must warrant the emission
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 emission 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 emissionrelated 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 1995 and later engines are warranted for two (2) years.
If any emission-related part on your engine is defective, the part
will be repaired or replaced by HFT.
Harbor Freight Tools Emission Control Defects
Warranty Coverage
Engines are warranted for a period of two (2) years relative to
emission control parts defects, subject to the provisions set forth
below. If any emission related part on your engine is defective, the
part will be repaired or replaced by HFT.
Page 40SKU 65162 For technical questions, please call 1-800-444-3353.
Page 41
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 modications.
You are responsible for shipping your engine to a HFT war-•
ranty 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 1-800-444-3353.
Harbor Freight Tools Emission Control Defects
Warranty Provisions
1. Length of Coverage
HFT warrants to a rst 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
rst 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
1-800-444-3353.
3. Consequential Damages Coverage
Coverage under this warranty shall also extend to the failure
of any engine components caused by the failure of any war-
ranted part while it is still covered under this warranty.
4. Coverage Exclusions
Warranty claims shall be led in accordance with the provi-
sions 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 includ-
ing, but not limited to:
Use of parts which are not authorized by HFTa)
Improper installation, adjustment or repair of the engine b)
or of any warranted part unless performed by an authorized warranty center
Failure to follow recommendations on fuel use contained c)
in the Owner’s Manual
Improper or inadequate maintenance of any warranted d)
parts
Repairs performed outside of the authorized warranty e)
service dealers
Alterations by changing, adding to or removing parts f)
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 rst 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 qualied 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
Carburetor and its internal parts.i)
Fuel pump (if so equipped).ii)
Cold start enrichment system.iii)
2) Air Induction System
Intake pipe/manifold.i)
Air cleaner.ii)
3) Ignition System
Spark plug.i)
Magneto ignition system.ii)
4) Catalyst System (if so equipped)
Exhaust pipe stud.i)
Mufer.ii)
Catalytic converter (if so equipped).iii)
5) Miscellaneous Items Used in Above Systems
Vacuum, temperature and time sensitive valves i)
and switches.
Hoses, belts, connectors, and assemblies.ii)
Page 41SKU 65162 For technical questions, please call 1-800-444-3353.
Page 42
Page 43
SAFETY OPERATION MAINTENANCESETUP
.........................................................
....................................................
..............................................
Specifications
5W30 at 32° F or below
with full tank
Valve Clearance
Page 44
SAFETYOPERATIONMAINTENANCE SETUP
WARNING SYMBOLS AND DEFINITIONS
will result in death or serious injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INSTRUCTIONS
WARNING! Read all instructions.
well
Page 45
SAFETY OPERATION MAINTENANCESETUP
work gloves, and dust mask/respirator during set up.
YOU IN MINUTES.
windows,
when it is running. Turn off the equipment
with steel-toed work boots during use.
Accessories that may be suitable for one
when used on another piece of equipment.
jewelry. Keep hair, clothing and gloves
Page 46
SAFETYOPERATIONMAINTENANCE SETUP
Many accidents are caused
Allow the engine to completely cool.
while the smell of fuel hangs in the air.
Page 47
SAFETY OPERATION MAINTENANCESETUP
Engine Controls
Air Filter
Page 48
SAFETYOPERATIONMAINTENANCE SETUP
Set Up
section at the beginning of this manual
A spark arrestor may be required.
At high altitudes, the engine’s carburetor, governor
(if
WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE.
WARNING! INSTALL THIS ENGINE ACCORDING TO EQUI
Page 49
SAFETY OPERATION MAINTENANCESETUP
Operation
section at the beginning of this
Your Warranty is VOID if the engine’s
WILL permanently damage the engine.
wipe it off with a clean lint free rag.
Do not run the engine with too little
Do not run the engine with too little
WARNING!
with 87+
not use gasoline containing more than
not use gasoline that has been
metal fuel container or a dirty
Page 50
SAFETYOPERATIONMAINTENANCE SETUP
Some tools have a Speed Control Lever located
Some tools have a Speed Control Lever located
Do not let the Starter Handle snap back
Do not let the Starter Handle snap back
O
I
ON
1
Page 51
SAFETY OPERATION MAINTENANCESETUP
Allow the Engine to run for several seconds.
Moving the Choke Lever too
Moving the Choke Lever too
Allow the engine to run at no load for five minutes with no
Adjust the Throttle as needed.
section.
O
I
Page 52
SAFETYOPERATIONMAINTENANCE SETUP
Service
WARNING
This maintenance schedule is intended solely as a general guide. If performance decreases or if
This maintenance schedule is intended solely as a general guide. If performance decreases or if
will differ depending on factors such as duty cycle, temperature, air quality, fuel quality, and other factors.
The following procedures are
The following procedures are
the regular checks and maintenance
Yearly or
Years
Page 53
SAFETY OPERATION MAINTENANCESETUP
WARNING!
with 87+
not use gasoline that has been
metal fuel container or a dirty
Oil is very hot during operation and can
Oil is very hot during operation and can
wipe it off with a clean lint free rag.
Add the appropriate type of oil until the oil level is at
10W-30
30
5W-30
Average outdoor temperature
Do not run the engine with too little
Do not run the engine with too little
Air Filter Element Maintenance
ANSI-approved safety goggles, NIOSH-
well-ventilated area
Page 54
SAFETYOPERATIONMAINTENANCE SETUP
Recommended Spark Plugs:
Tighten the spark
Apply dielectric spark plug boot protector
water.
The
water will
Apply a thin coat of rust preventive oil to all metal parts.
WARNING!
AFTER STORAGE:
will
Page 55
SAFETY OPERATION MAINTENANCESETUP
Do not use gasoline with more
tap side of carburetor float
Page 56
SAFETYOPERATIONMAINTENANCE SETUP
Do not use gasoline with more
section.)
Allow engine to warm up prior
Page 57
SAFETY OPERATION MAINTENANCESETUP
Warranty Information
workmanship for the period of 90 days from the date
THIS WARRANTY IS
Page 58
SAFETYOPERATIONMAINTENANCE SETUP
Warranty Statement
Your emission control system may include parts such as the carburetor
As the engine owner, you are responsible for the performance
warranty solely for the lack of receipts or for your failure to
As the engine owner, you should, however, be aware
You are responsible for shipping your engine to a HFT warranty
warranted part while it is still covered under this warranty.
warranty center
warranty
Alterations by changing, adding to or
which is scheduled for replacement as required maintenance
Warranted
Air/fuel ratio feedback and control system.
Air Induction System
Air filter.
Air Injection System
Air pump or pulse valve.
Valves affecting distribution of flow.
P
Page 59
SAFETY OPERATION MAINTENANCESETUP
Parts List and Diagram
Arm, Governor
Valve, Exhaust
Valve, Intake
Valve, 2nd
Valve, One Way
Valve, One Way
Some parts are listed and shown for illustration purposes only,
Page 60
SAFETYOPERATIONMAINTENANCE SETUP
Assembly Diagram
Page 61
www.harborfreight.com
Not to scale.
3.76 in. / 95.5mm
3.25 in. / 82.5mm
Not to scale.
/ 138mm
Ø4.45 in. / 113mm
45º
45º
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