Page 1
©2000 MTD SOUTHWEST INC
Models
TB4000 –
26cc Straight Shaft
FORM 182825 (12/00) (10197 rev. A)
Printed in U.S.A.
Owner/Operator
Manual
4-Cycle Trimmer/
Brush Cutter
• Safety
• Assembly
• Operation
• Maintenance
Page 2
2
Introduction
THANK YOU
Thank you for buying this quality product. This modern outdoor power tool will provide many hours of useful service.
You will find it to be a great labor-saving device. This operator’s manual provides you with easy-to-understand operating instructions. Read the whole manual and follow all the instructions to keep your new outdoor power tool in top
operating condition.
PRODUCT REFERENCES, ILLUSTRATIONS AND SPECIFICATIONS
All information, illustrations and specifications in this manual are based on the latest product information available at
the time of printing. We reserve the right to make changes at any time without notice.
Copyright
©
2000 MTD Southwest Inc
All Rights Reserved.
Table of Contents
Contents of Carton
Introduction.......................................................................... 2
Table of Contents ................................................................. 2
Contents of Carton............................................................... 2
Service Information ............................................................. 3
Identification Numbers ........................................................ 3
Section 1: Safety .............................................................. 4-7
Important Safety Information ......................................... 4-6
Safety and International Symbols .................................. 6-7
Section 2: Know Your Unit ................................................... 8
Section 3: Assembly ........................................................... 9
Installing and Adjusting the J-handle ............................... 9
Installing the Harness ..................................................... 10
Removing and Installing the Cutting Attachment Shield .. 10
Remove the Cutting Attachment and
Install the Cutting Blade ............................................ 10-12
Remove the Cutting Blade and
Install the Cutting Attachment......................................... 12
Section 4: Oil and Fuel ................................................ 13-14
Recommended Oil Type .................................................. 13
Recommended Fuel Type................................................ 13
Fueling Unit .................................................................... 14
Section 5: Operation.................................................... 14-17
Starting Instructions .................................................. 14-15
Stopping Instructions ...................................................... 15
Holding the Trimmer ....................................................... 16
Adjusting Trimming Line Length...................................... 16
Tips for Best Trimming Results ....................................... 16
Decorative Trimming....................................................... 17
Using the Cutting Blade .................................................. 17
Section 6: Maintenance .............................................. 18-24
Maintenance Schedule.................................................... 18
Line Installation......................................................... 18-19
Installing a Prewound Reel.............................................. 20
Checking the Oil Level .................................................... 20
Changing the Oil........................................................ 20-21
Air Filter Maintenance..................................................... 21
Carburetor Adjustment.................................................... 22
Rocker Arm Clearance............................................... 22-23
Replacing the Spark Plug................................................ 23
Accessories/Replacement parts ...................................... 24
Cleaning ......................................................................... 24
Storage........................................................................... 24
Long Term Storage ......................................................... 24
Section 7: Troubleshooting............................................... 25
Section 8: Specifications.................................................. 26
Section 9: Warranty..................................................... 27-28
• Model TB4000 Trimmer/Brush Cutter
∆ Large Bump Head Cutting Attachment
∆ 4-Tooth Brush Blade
∆ J-Handle and Hardware
• Cutting Attachment Shield with Hardware
• Shoulder Harness
• Locking Rod Tool
• Owner/Operator Manual
• Product Registration Card
• Bottle of 4-Cycle Oil
∆ This item will either be installed on the unit or in the
hardware pack
Page 3
3
Service Information
SERVICE INFORMATION
Service on this unit both within and after the warranty period should be performed only by an authorized and
approved service dealer.
Dial:
• 1-800-345-8746 for authorized service dealers in the United States
Or
• 1-800-668-1238 in Canada to obtain the listing of the authorized service dealer nearest you.
DO NOT RETURN THE UNIT TO THE RETAILER.
NOTE: PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
Make sure this manual is carefully read and understood before starting or operating this equipment.
THIS PRODUCT IS COVERED BY ONE OR MORE US PATENTS, OTHER PATENTS PENDING.
WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or
emit chemicals known to State of California to cause cancer and birth defects or other reproductive harm.
SPARK ARRESTER INFORMATION
NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington. All
U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and Washington
require, by law that certain internal combustion engines operated on forest brush and/or grass-covered areas be
equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and
maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these
requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory
equipped with a spark arrestor. If it requires replacement, ask your LOCAL SERVICE dealer to install the
Accessory Part #182153 Spark Arrestor Kit.
Identification Numbers
Before you start assembling your new equipment, please locate the model plate on the unit and copy the
information from it to the space provided below. The information on the model plate is very important if you need
help from our Customer Support Department or an authorized dealer.
• You can locate the model number on the shaft housing of the unit next to the On/Off Stop Control Switch.
A sample model plate is explained below. For future reference, please copy the model number and the serial
number of the equipment in the space below.
Copy the model / parent
part number here:
Copy the serial number here:
Page 4
The purpose of safety symbols is to attract your
attention to possible dangers. The safety symbols,
and their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper
accident prevention measures.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates
danger, warning, or caution. Attention is
required in order to avoid serious personal
injury. May be used in conjunction with
other symbols or pictographs.
NOTE:Advises you of information or instructions
vital to the operation or maintenance of the
equipment.
4
Section 1
Safety
Failure to obey a safety warning will result in
serious injury to yourself or to others. Always
follow the safety precautions to reduce the risk
of fire, electric shock, and personal injury.
Failure to obey a safety warning can result in
injury to yourself and others. Always follow the
safety precautions to reduce the risk of fire,
electric shock, and personal injury.
Failure to obey a safety warning may result in
property damage or personal injury to yourself
or to others. Always follow the safety precautions to reduce the risk of fire, electric shock,
and personal injury.
• IMPORTANT SAFETY INFORMATION •
READ ALL INSTRUCTIONS
BEFORE OPERATING
• Read the instructions carefully. Be familiar with the
controls and proper use of the unit.
• Do not operate this unit when tired, ill, or under the
influence of alcohol, drugs, or medication.
• Children and teens under the age of 15 must not use
the unit, except for teens guided by an adult.
• Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace cutting attachment parts
that are cracked, chipped, or damaged in any way.
Make sure the cutting attachment is properly
installed and securely fastened. Be sure the cutting
attachment shield is properly attached, and positioned as recommended. Failure to so can result in
personal injury to the operator and bystanders, as
well as damage to the unit.
• Use only 0.095 inch (2.41 mm) diameter genuine
manufacturer’s replacement line. Never use metalreinforced line, wire, chain, or rope, etc. These can
break off and become a dangerous projectile.
• Be aware of the risk of injury to the head, hands and
feet.
• Clear the area to be cut before each use. Remove all
objects such as rocks, broken glass, nails, wire, or
string which can be thrown or become entangled in
the cutting attachment. Clear the area of children,
bystanders, and pets. At a minimum, keep all children, bystanders and pets outside a 50 feet (15 m)
radius; there still may be a risk to bystanders from
thrown objects. Bystanders should wear eye protection. If you are approached, stop the engine and
cutting attachment immediately.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or repairs before using unit.
SAFETY WARNINGS FOR GAS TRIMMERS
WARNING: Gasoline is highly flammable, and its
vapors can explode if ignited. Take the following precautions:
• Store fuel only in containers specifically designed
and approved for the storage of such materials.
• Always stop the engine and allow it to cool before
filling the fuel tank. Never remove the cap of the fuel
tank, or add fuel, when the engine is hot. Never
operate the unit without the fuel cap securely in
place. Loosen the fuel tank cap slowly to relieve any
pressure in the tank.
Page 5
5
Safety (continued)
• Add fuel in a clean, well-ventilated area outdoors
where there are no sparks or flames. Slowly remove
the fuel cap only after stopping engine. Do not
smoke while fueling or mixing fuel. Wipe up any
spilled fuel from the unit immediately.
• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
• Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke, keep sparks and open flames from the area
while adding fuel or operating the unit.
WHILE OPERATING
• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill. Operate
this unit only in a well ventilated area outdoors.
• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1 standards, and ear/hearing protection when operating this unit. Wear a face or dust
mask if the operation is dusty.
• Wear heavy, long pants, boots, gloves and a long
sleeve shirt. Do not wear loose clothing, jewelry,
short pants, sandals or go barefoot. Secure hair
above shoulder level.
• The cutting attachment shield must always be in
place while operating the unit. Do not operate unit
without both trimming lines extended, and the proper
line installed. Do not extend the trimming line beyond
the length of the shield.
• This unit has a clutch. The cutting attachment
remains stationary when the engine is idling. If it
does not, have the unit adjusted by an authorized
service technician.
• Adjust the J-Handle to your size to provide the best
grip.
• Be sure the cutting attachment is not in contact with
anything before starting the unit.
• Use the unit only in daylight or good artificial light.
• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and
unit must be in a stable position while starting. See
Starting/Stopping Instructions.
• Use the right tool. Only use this tool for the purpose
intended.
• Do not overreach. Always keep proper footing and
balance.
• Always hold the unit with both hands when operating. Keep a firm grip on both the front and rear handle or grips.
• Keep hands, face, and feet at a distance from all
moving parts. Do not touch or try to stop the cutting
attachment when it is rotating.
• Do not touch the engine, gear housing or muffler.
These parts get extremely hot from operation. When
turned off they remain hot for a short time.
• Do not operate the engine faster than the speed
needed to cut, trim or edge. Do not run the engine at
high speed when not cutting.
• Always stop the engine when cutting is delayed or
when walking from one cutting location to another.
• If you strike or become entangled with a foreign
object, stop the engine immediately and check for
damage. Do not operate before repairing damage.
Do not operate the unit with loose or damaged parts.
• Stop and switch the engine to off for maintenance,
repair, or for changing the cutting attachment or
other attachments.
• Use only genuine manufacturer’s replacement parts
and accessories for this unit. These are available
from your authorized service dealer. Use of any parts
or accessories not authorized by the manufacturer
could lead to serious injury to the user, or damage to
the unit, and void your warranty.
• Keep unit clean of vegetation and other materials.
They may become lodged between the cutting
attachment and shield.
• To reduce fire hazard, replace faulty muffler and
spark arrestor, keep the engine and muffler free from
grass, leaves, excessive grease or carbon build up.
WHILE OPERATING WITH CUTTING BLADE
• Read and understand all safety warnings before
operating this unit.
• Always use the shoulder harness when using the
brush blade accessory.
• Keep the J-handle between the operator and cutting
attachment or blade at all times.
• NEVER cut with the cutting blade located over 30
inches (76 cm) or more above the ground level.
• Blade thrust may occur when the spinning blade
contacts an object that it does not immediately cut.
Blade thrust can be violent enough to cause the unit
and/or operator to be propelled in any direction , and
possibly lose control of the unit. Blade thrust can
occur without warning if the blade snags, stalls or
binds. This is more likely to occur in areas where it is
difficult to see the material being cut.
• For operation with the brush blade, do not cut
anything thicker than 1/2 inch or a violent kickback
could occur.
• Do not attempt to touch or stop the blade when it is
rotating.
• A coasting blade can cause injury while it continues
to spin after the engine is stopped or the throttle trigger is released. Maintain proper control until the
blade has completely stopped rotating.
Page 6
6
Safety (continued)
• Do not run the unit at high speed when not cutting.
• If you strike or become entangled with a foreign
object, stop the engine immediately and check for
damage. Have any damage repaired before attempting further operations. Do not operate unit with a
bent, damaged or dull blade. Discard blades that are
bent, warped, or damaged.
• Do not sharpen the cutting blade. Sharpening the
blade can cause the blade tip to break off while in
use. This can result in severe personal injury. Replace
the blade.
• Do not use the cutting blade for edging or as an
edger, severe personal injury to yourself or others
can occur. Use the cutting blade only for the purpose
as described in this manual.
• Stop the engine IMMEDIATELY if you feel excessive
vibration. Vibration is a sign of trouble. Inspect thoroughly for loose nuts, bolts or damage before continuing. Repair or replace affected parts as necessary.
AFTER USE
• Clean cutting blades with a household cleaner to
remove any gum buildup. Oil the blade with machine
oil to prevent rust.
• Lock up and store the cutting blade in an appropriate
area to protect the blade from unauthorized use or
damage.
OTHER SAFETY WARNINGS
• Never store the unit, with fuel in the tank, inside a
building where fumes may reach an open flame or
spark.
• Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.
• Store the unit in a dry area, locked up or up high
to prevent unauthorized use or damage, out of the
reach of children.
• Never douse or squirt the unit with water or any other
liquid. Keep handles dry, clean and free from debris.
Clean after each use, see Cleaning and Storage
instructions.
• Keep these instructions. Refer to them often and use
them to instruct other users. If you loan someone this
unit, also loan them these instructions.
SAVE THESE INSTRUCTIONS
SAFETY AND INTERNATIONAL SYMBOLS
This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.
SYMBOL MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning, or caution. May be used in conjunction with other
symbols or pictographs.
• WARNING - READ OPERATOR'S MANUAL
Read the Operator’s Manual(s) and follow all warnings and safety instructions.
Failure to do so can result in serious injury to the operator and/or bystanders.
• FOR SERVICE INFORMATION, CALL:
USA: 1-800-345-8746
CANADA: 1-800-668-1238
• WEAR EYE AND HEARING PROTECTION
WARNING:
Thrown objects and loud noise can cause severe eye injury and hearing
loss. Wear eye protection meeting ANSI Z87.1 standards and ear protection when
operating this unit.
• KEEP BYSTANDERS AWAY
WARNING:
Keep all bystanders, especially children and pets, at least 50 feet (15 m)
from the operating area.
• PRIMER BULB
Push primer bulb, fully and slowly, 5 to 7 times.
Page 7
SYMBOL MEANING
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
• OIL
Refer to operator's manual for the proper type of oil.
• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY
WARNING:
Do not operate without the cutting attachment shield in place.
Keep away from the rotating cutting attachment.
• ON/OFF STOP CONTROL
ON / START / RUN
• ON/OFF STOP CONTROL
OFF OR STOP
• HOT SURFACE WARNING
Do not touch a hot muffler, gear housing or cylinder. You may get burned. These parts
get extremely hot from operation. When turned off they remain hot for a short time.
• SHARP BLADE
WARNING: Sharp blade on cutting attachment shield. To prevent serious injury, do not
touch line cutting blade.
• CHOKE CONTROL
A • FULL choke position.
B • PARTIAL choke position.
C • RUN position.
• BRUSH CUTTERS • Replace dull blade.
Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to
break off while in use. This can result in severe personal injury.
• TRIMMER/BRUSH CUTTER SAFETY
WARNING: Thrown objects and rotating cutter can cause severe injury. Keep
bystanders, especially children and pets, at least 50 feet (15 m) away from the cutting
area. The cutting attachment shield must be used when using the trimmer cutting attachment.
WARNING: The operation of any power tool can cause foreign objects to be thrown
into your eyes. This can lead to severe eye damage. Before commencing power tool
operation, always wear safety glasses or goggles that are marked as meeting ANSI
Z87.1 standards, and a full face shield when needed.
7
Safety (continued)
Page 8
8
Section 2
Know Your Unit
APPLICATIONS
As a trimmer;
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees, fences, etc.
As a brush cutter;
• Cutting weeds and light bush of up to 1/2 inch in
diameter.
Cutting Attachment
Shield
Fuel Cap
Throttle
Control
J-Handle
Cutting Attachment
Gear Housing
Shaft Grip
Primer Bulb
Choke Lever
Spark Plug
Shaft
Housing
Starter
Rope Grip
Blade Shield /
Shield Mount
Cutting Blade
Line Cutting Blade
Muffler
Support
Fitting
On/Off Stop Control
Oil Fill Plug / Dipstick
Air Filter Cover
Start/On (I)
Stop/
Off (O)
Page 9
9
Section 3
Assembly
Decal
On some units, the J-handle may be preinstalled and
only require loosening the screws and adjusting the
J-handle to the operator. Go to step 6 for adjusting the
J-handle if preinstalled.
INSTALLING AND ADJUSTING THE J-HANDLE
Installing
1. Remove the screws, nuts, top and middle clamp
pieces that were installed on the J-handle for shipping.
2. Place the J-handle between the top and middle
clamp pieces (Fig. 3-1).
3. While holding the three pieces together, install the
four (4) screws through the top clamp and into
middle clamp.
NOTE: The holes in the top and middle clamp will
line up only when assembled correctly.
4. Place the clamps and J-handle the over the shaft
housing and onto the bottom clamp.
5. Hold each hex nut in the bottom clamp recess with
a finger. Start screws with a large Phillips screwdriver. Do not tighten until you make the handle
adjustment.
Adjusting
6. Loosen the screws so that the J-handle can be
easily moved in the clamp assembly. Do not
remove the screws or nuts.
7. Slide the J-handle in or out until the arrow/white
line on the decal touches the clamp assembly
(Fig. 3-2).
8. While holding the unit in the operating position
(Fig. 3-3), position the J-handle to the location
that provides you the best grip.
9. Tighten the clamp screws evenly, until the J-handle
is secure.
(4) Screws
Top Clamp
J-Handle
Middle Clamp
Bottom Clamp
Fig. 3-1
Fig. 3-2
Fig. 3-3
Nuts
Page 10
10
Assembly (continued)
INSTALLING THE HARNESS
Always use the shoulder harness when using the
cutting blade to avoid serious personal injury.
1. Push the strap through the center of the buckle.
2. Pull the strap over the cross bar and down through
the slot in the buckle (Fig. 3-4).
3. Put the harness on over head and onto shoulder.
Snap it on to the support fitting (Fig. 3-5).
4. Adjust length to fit the operator’s size. Pull tab to
lengthen, pull strap to shorten (Fig 3-6).
REMOVING AND INSTALLING CUTTING
ATTACHMENT SHIELD
Remove the cutting attachment shield when using
the unit as a brush cutter.
The cutting attachment shield should NOT be
installed when operating the unit with a blade.
Remove the cutting attachment shield before
removing or installing the blade.
Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat
blade screwdriver (Fig. 3-7). Store parts for future use.
Install the cutting attachment shield when using the
unit as a grass trimmer.
To avoid serious personal injury, the cutting
attachment shield SHALL be in place at all times
while operating the unit as a grass trimmer.
Install the cutting attachment shield on the shield
mount by inserting the three (3) screws into the shield
mount. Tighten securely with a flat blade screwdriver
(Fig. 3-7).
REMOVE THE CUTTING ATTACHMENT AND
INSTALL THE CUTTING BLADE
NOTE: To make removing or installing the cutting
blade or cutting attachment easier, place the unit
on the ground or on a work bench.
Remove the Cutting Attachment Shield
See Section 3, Assembly, Remove and Install Cutting
Attachment Shield.
(3) Screws
Cutting
Attachment
Shield
Shield Mount
Gear Housing
Support Fitting
Fig. 3-4
Fig. 3-5
Fig. 3-6
Fig. 3-7
Page 11
11
Assembly (continued)
Fig. 3-8
Remove the Cutting Attachment
The gear housing gets hot with use and can
result in injury to the operator. When the unit is
turned off it remains hot for a short time. Do not
touch the gear housing until it has cooled.
1. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the shaft bushing hole (Fig. 3-8).
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 3-9).
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the output shaft (Fig. 3-10). Store the cutting attachment
for future use.
NOTE: The blade retainer under the cutting attachment will be used when installing the cutting blade.
Install the Cutting Blade
To avoid serious personal injury, always wear
gloves while handling or installing the blade.
4. Place the cutting blade on the output shaft bushing
(Fig. 3-11).
5. Make sure that the cutting blade is centered on the
pilot step and sitting flat against the output shaft
bushing (Fig. 3-12).
If the cutting blade is off-center, the unit will
vibrate, and the blade may fly off, which can
cause serious personal injury.
Cutting Attachment
Locking
Rod Slot
Locking Rod
Shaft Bushing Hole
Locking Rod Slot
Output Shaft
Bushing
Locking Rod
Output Shaft
Shield
Mount
Locking Rod
Cutting
Blade
Blade Retainer
Nut
Output Shaft
Bushing
Pilot Hole
Pilot Step
Fig. 3-9
Fig. 3-10
Fig. 3-11
Fig. 3-12
Page 12
12
Assembly (continued)
6. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole
(Fig. 3-8, Pg. 10).
7. Put the blade retainer and nut on the output shaft.
Make sure that the blade is installed correctly.
8. Tighten nut counterclockwise against the blade
while holding the locking rod;
• If using a torque wrench and an 5/8 inch socket
tighten to;
325 - 335 in•lb,
27 - 28 ft.•lb,
37 -38 N•m.
• Without a torque wrench, use a 5/8 inch closed-end
or socket wrench, turning the nut until the blade
retainer is snug against the shaft bushing. Make sure
that the blade is installed correctly, then rotate the
nut an additional 1/4 to 1/2 turn counterclockwise
(Fig. 3-13).
9. Remove the locking rod from the locking rod slot.
Cutting Attachment
Locking Rod
Clockwise
Blade Retainer
Output Shaft
Bushing
1/4-1/2 turn
Counterclockwise
To avoid serious personal injury or damage to the
unit, do not start or operate this unit with the
locking rod in the locking rod slot.
Do not sharpen the cutting blade. Sharpening the
blade can cause the blade tip to break off while
in use. This can result in severe personal injury.
Replace the blade.
REMOVE THE CUTTING BLADE AND INSTALL
THE CUTTING ATTACHMENT
Remove the Cutting Blade
To avoid serious personal injury, always wear
gloves while handling or installing the blade.
1. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole
(Fig. 3-8, Pg. 10).
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 3-14).
3. While holding the locking rod, loosen the nut on
the blade by turning it clockwise with a 5/8 inch
closed-end or socket wrench (Fig. 3-14).
4. Remove the nut, blade retainer, and blade. Store
the nut and blade together for future use in a
secure place. Store out of reach of children.
Install the Cutting Attachment
5. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the shaft bushing hole. (Fig. 3-8, Pg. 10). Place the blade retainer
on the output shaft with the flat surface against the
output shaft bushing as shown in Fig. 3-15. Screw
the cutting attachment counterclockwise onto the
output shaft. Tighten securely.
NOTE: The blade retainer must be installed on the
output shaft in the position shown for the cutting
attachment to work correctly.
6. Remove the locking rod.
7. Install the cutting attachment shield. See
Section 3, Assembly, Remove and Install Cutting
Attachment Shield.
To avoid serious personal injury, the cutting
attachment shield SHALL be in place at all times
while operating the unit as a grass trimmer.
Fig. 3-13
Fig. 3-14
Fig. 3-15
Page 13
13
Section 4
Oil and Fuel
RECOMMENDED OIL TYPE
Using the proper type and weight of oil in the
crankcase is extremely important. Check the oil before
each use and change the oil regularly. Failure to use
the correct oil, or using dirty oil, can cause premature
engine wear and failure.
Use a high-quality SAE 30 weight oil of API (American
Petroleum Institute) service class SF, SG, SH.
ADDING OIL TO CRANKCASE – INITIAL USE
NOTE: This unit is shipped without being filled with
oil. In order to avoid damage to the unit, put oil in
the crankcase before attempting to start unit.
Your unit is supplied with one 3.4 fluid oz. (100 ml.)
bottle of SAE 30 SF, SG, SH oil (Fig. 4-1).
NOTE: Save the bottle to measure the correct
amount for future oil changes. See Section 6,
Maintenance, Checking the Oil Level.
NOTE: Your new 4-Cycle cultivator is shipped for
operation in conditions above 40°F (4°C). For cold
weather operation, temperatures below 40°F (4°C)
use a high-quality SAE 10W30 weight oil of API
(American Petroleum Institute) service class SF, SG,
SH.
Funnel
Spout
Fig. 4-1
Fig. 4-2
1. Unscrew the top of the bottle of oil and remove the
paper seal covering the opening. Replace top. Cut
the tip off the funnel spout (Fig. 4-1).
2. Place the unit on a flat level surface (Fig. 4-4).
3. Remove the oil plug / dipstick from the crankcase.
4. Pour the entire bottle of oil into the oil fill hole
(Fig. 4-2).
NOTE: Never add oil to the fuel or fuel tank.
5. Remove tag from oil fill plug / dipstick.
6. Wipe up any oil that may have spilled and reinstall
the oil fill plug / dipstick.
The importance of checking and maintaining the proper
oil level in the crankcase cannot be overemphasized.
Check oil before each use and change as specified.
See Section 6, Maintenance, Checking the Oil Level.
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for the unit not running
properly. Be sure to use fresh, clean, unleaded
Gasoline.
NOTE: This is a four cycle engine. In order to avoid
damage to the unit, do not mix oil with Gasoline.
Definition of Blended Fuels
Today's fuels are often a blend of gasoline and
oxygenates such as ethanol, methanol or MTBE (ether).
Alcohol-blended fuel absorbs water. As little as 1%
water in the fuel can make fuel form acids when stored.
Use fresh fuel (less than 60 days old), when using
alcohol-blended fuel.
Using Blended Fuels
If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions.
• Always use fresh unleaded gasoline
• Use the fuel additive STA-BIL
®
or an equivalent.
• Drain tank and run the engine dry before storing
unit.
Using Fuel Additives
The use of fuel additives, such as STA-BIL® Gas
Stabilizer or an equivalent, will inhibit corrosion and
minimize the formation of gum deposits. Using a fuel
additive can keep fuel from forming harmful deposits
in the carburetor for up to six (6) months. Add 0.8 oz.
(23 ml) of fuel additive per gallon of fuel according to
the instructions on the container. NEVER add fuel
additives directly to the unit's gas tank.
Page 14
STARTING INSTRUCTIONS
Operate this unit only in a well ventilated area
outdoors. Carbon monoxide exhaust fumes can
be lethal in a confined area.
Avoid accidental starting. Be in the starting
position whenever pulling the starting rope. To
avoid serious personal injury, the operator and
unit must be in a stable position while starting.
14
Oil and Fuel (continued)
FUELING UNIT
Gasoline is extremely flammable and its vapors
can explode if ignited. To avoid serious personal
injury, always stop the engine and allow it to cool
before filling the fuel tank. Do not smoke while
filling the tank. Keep sparks and open flames
away from the area.
1. Remove fuel cap (Fig. 4-3). Remove the tag from
the fuel tank neck.
UNLEADED
FUEL
Fig. 4-3
Fig. 4-4
Fuel Cap
Cold Start – First Start of the Day or Engine Ran
Out of Fuel
NOTE: Keep the throttle control depressed at all
times until the engine is warmed up.
1. Check oil level in crankcase. See Checking the Oil
Level in Maintenance section.
2. Fill the fuel tank with fresh, clean, unleaded fuel.
See Section 4, Oil and Fuel.
3. Put the On/Off Stop Control in the START [I] posi-
tion (Fig. 5-1).
4. Place the choke lever in the FULL choke (A)
position (Fig. 5-2).
NOTE: There is a small notch for each position
where the the choke lever sets.
NOTE: Fill or add fuel to the tank only when the
unit is in a horizontal position (Fig. 4-3).
Remove fuel cap slowly to avoid injury from
gasoline spray.
2. Place spout of gas container into the fill hole on the
fuel tank and fill tank(Fig. 4-4).
Add gasoline in a clean, well ventilated area
outdoors. Avoid creating a source of ignition for
spilt fuel.
NOTE: Do not overfill tank.
3. Wipe up any gasoline that may have spilled
4. Reinstall the fuel cap.
Never operate the unit without the fuel cap
securely in place.
5. Move the unit at least 30 ft. (9.1 m) from the fueling
source and site before starting the engine.
NOTE: Dispose of the old gasoline in accordance to
Federal, State, and Local regulations.
Section 5
Operation
Page 15
15
Operation (continued)
Starter
Rope
Throttle
Control
On/Off Stop
Control
Primer BulbPARTIAL (B) RUN (C)
FULL
Choke (A)
Choke
Lever
Start/On (I)
Stop/Off (O)
Fig. 5-1
Fig. 5-2
Fig. 5-3
5. Fully press and release the primer bulb slowly 5 to
7 times. Gasoline should be felt and visible in the
bulb (Fig. 5-2). If gasoline has not entered the bulb,
press three more times, or until it does.
6. Squeeze the throttle control to the wide open
(full throttle) position.
7. With the unit in the starting position (Fig. 5-3) pull
the starter rope briskly 5 times in the FULL choke
(A) position. If the engine attempts to run before
the fifth pull, proceed to step 8.
8. Move the choke lever to the PARTIAL (B)
position (Fig. 5-2).
NOTE: The engine will not run in the FULL choke
(A) position.
9. Pull the starter rope 1 to 3 pulls until the engine
starts. Run for 15-30 seconds. If the unit fails to
start return to step 7.
10. Move the choke lever to the RUN (C) position
and run at full throttle for 30 seconds.
11. Release the throttle control to the idle position and
begin operation.
NOTE: f the engine does not start using these
procedures, repeat steps 5 through 11 using TWO
(2) pulls in the FULL choke (A) position.
Engine Re-Start - Warm Engine With Fuel
1. Put the On/Off Stop Control in the START [I]
position (Fig. 5-1).
2. Move the choke lever to the PARTIAL (B)
position (Fig. 5-2).
3. Squeeze the throttle control to the wide open
(full throttle) position.
4. With the unit in the starting position (Fig. 5-3), pull
the starter rope briskly until the engine starts.
5. When the engine starts, move the choke lever to
the RUN (C) position, and run at full throttle for
30 seconds.
NOTE: If the engine does not start using the
Engine Re-start procedures, revert to the Cold Start
procedures.
NOTE: 4-stroke engines, like cars, are able to start
in the idle position. As an alternate method, you
may want to start your unit in the idle position
when the unit is warm. With the On/Off Stop
Control in the START position and the choke lever
in the RUN (C) position, pull the starter rope
briskly. When the engine starts, run at full throttle
for 30 seconds. If the unit fails to start or dies,
revert to the Engine Re-Start procedure.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control
(Fig. 5-3). Allow the engine to idle.
2. To stop the engine, put the On/Off Stop Control in
the STOP [O] position (Fig. 5-1).
Page 16
16
Operation (continued)
HOLDING THE TRIMMER
Always wear eye, hearing, foot and body protection to reduce the risk of injury when operating
this unit.
Before operating the unit, stand in the operating position (Fig. 5-4). Check for the following:
• The operator is wearing eye protection and proper
clothing.
• The right arm is slightly bent, and the hand is holding the shaft grip.
• The left arm is straight, and the hand is holding the
J-handle.
• The unit is at waist level.
• The cutting attachment is parallel to the ground and
easily contacts the vegetation to be cut without the
operator having to bend over.
ADJUSTING TRIMMING LINE LENGTH
The Bump Head cutting attachment allows you to
release trimming line without stopping the engine. To
release more line, lightly tap the cutting attachment on
the ground (Fig. 5-5) while operating the trimmer at
high speed.
NOTE: Always keep the trimming line fully extended. Line release becomes more difficult as cutting
line becomes shorter.
Each time the head is bumped, about 1 inch (25.4 mm)
of trimming line is released. A blade in the cutting
attachment shield will cut the line to the proper length
if excess line is released.
For best results, tap the Bump Head™ on bare ground
or hard soil. If line release is attempted in tall grass, the
engine may stall. Always keep the trimming line fully
extended. Line release becomes more difficult as the
cutting line becomes shorter.
NOTE: Do not rest the Bump Head on the ground
while the unit is running .
Do not remove or alter the line cutting blade
assembly. Excessive line length will make the
clutch overheat. This may lead to serious personal injury or damage to the unit.
Some line breakage will occur from:
• Entanglement with foreign matter
• Normal line fatigue
• Attempting to cut thick, stalky weeds
• Forcing the line into objects such as walls or fence
posts
TIPS FOR BEST TRIMMING RESULTS
• Keep the cutting attachment parallel to the ground.
• Do not force the cutting attachment. Allow the tip
of the line to do the cutting, especially along walls.
Cutting with more than the tip will reduce cutting
efficiency and may overload the engine.
• Cut grass over 8 inches (200 mm) by working from
top to bottom in small increments to avoid premature line wear or engine drag.
• Cut from left to right whenever possible. Cutting to
the right improves the unit's cutting efficiency.
Clippings are thrown away from the operator.
• Slowly move the trimmer into and out of the cutting
area at the desired height. Move either in a forward-backward or side-to-side motion. Cutting
shorter lengths produces the best results.
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon;
• Following the previous trimming techniques
• What vegetation is being cut
• Where it’s being cut
For example, the line will wear faster when trimming
against a foundation wall as opposed to trimming
around a tree.
As a Trimmer As a Brush cutter
Fig. 5-4
Fig. 5-5
Page 17
Blade thrust may occur when the spinning blade
contacts an object that it does not immediately
cut. Blade thrust can be violent enough to cause
the unit and/or operator to be propelled in any
direction, and possibly lose control of the unit.
Blade thrust can occur without warning if the
blade snags, stalls or binds. This is more likely to
occur in areas where it is difficult to see the
material being cut.
• Cut while swinging the upper part of your body from
right to left.
• Always release the throttle trigger and allow the
engine to return to idle speed when not cutting.
• When done always unsnap unit from harness before
taking harness off.
The blade continues to spin after the engine is
turned off. The coasting blade can seriously cut
you if accidentally touched.
• Swing the unit in the same direction as the blade
spins, which increases the cutting action.
• Move forward to the next area to be cut after the
return swing and plant feet again.
• The cutting blade is designed with a second cutting
edge, which can be used by removing the blade,
turning it upside down, and reinstalling it.
Do not sharpen the cutting blade. Sharpening the
blade can cause the blade tip to break off while
in use. This can result in severe personal injury to
yourself or others. Replace the blade.
To reduce the chance of material wrapping around the
blade, follow these steps:
• Cut at full throttle.
• Swing the unit into material to be cut from your right
to your left (Fig. 5-7).
• Avoid the material just cut as you make the return
swing.
Do not clear away cut material with the engine
running or blade turning. To avoid serious personal injury, turn off engine. Allow the blade to
stop before removing materials wrapped around
the blade shaft.
17
Operation (continued)
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences, etc.
Rotate the whole unit so that the cutting attachment is
at a 30° angle to the ground (Fig. 5-6).
USING THE CUTTING BLADE
Always wear eye, hearing, foot, body protection
and the strap to reduce the risk of injury when
operating this unit.
Do not use the cutting blade for edging or as an
edger, severe personal injury to yourself or others can occur.
Before operating the unit with the cutting blade stand
in the operating position (Figs. 5-4). Refer to Holding
the Trimmer, Pg. 16.
Cutting Blade Operating Tips:
To establish a rhythmic cutting procedure:
• Plant feet firmly, comfortably apart.
• Bring the engine to full throttle before entering the
material to be cut. The blade has maximum cutting
power at full throttle and is less likely to bind, stall, or
cause blade thrust, which can result in serious personal injury to the operator or others.
Fig. 5-6
Fig. 5-7
Page 18
18
Section 6
Maintenance
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about these
procedures take your unit to an authorized service
dealer.
MAINTENANCE SCHEDULE
These required maintenance procedures should be
performed at the frequency stated in the table. They
should also be included as part of any seasonal tuneup.
MAINTENANCE NEEDED
Fill fuel tank with fresh unleaded fuel
Check oil
Change oil
Clean and re-oil air filter.
Change oil
Check rocker arm to valve clearance and adjust as required
Check spark plug condition and gap
WHEN
Before Starting Engine
After the First 10 Hours of Use
Every 10 Hours
Every 25 Hours
Every 50 Hours
GO TO:
Page 14
Page 20
Page 20
Page 21
Page 20
Page 22-23
Page 23
To prevent serious injury, never do maintenance
or repairs with unit running. Always do maintenance and repairs on a cool unit. Disconnect
spark plug wire to ensure the unit will not start.
LINE INSTALLATION
This section covers both Membrane line and standard
single line installation.
Always use manufacturer’s 0.095 inch (2.41 mm)
replacement line. Line other than specified may make
the engine overheat or fail.
Never use metal-reinforced line, wire, chain, or
rope, etc. These can break off and become a
dangerous projectile.
There are two methods to replace the trimming line.
• Wind the inner reel with new line
• Install a prewound inner reel
Winding the Existing Inner Reel
1. Hold the outer spool with one hand and unscrew
the Bump Knob clockwise (Fig. 6-1). Inspect the
bolt inside the Bump Knob to make sure it moves
freely. Replace the Bump Knob if damaged.
2. Remove the inner reel from the outer spool
(Fig. 6-1).
3. Remove spring from the inner reel (Fig. 6-1).
4. Use a clean cloth to clean the the inner reel, spring,
shaft, and inner surface of the outer spool.
Indexing Teeth
Inner Reel
Spring
Outer Spool
Bump Knob
Bolt
Fig. 6-1
Fig. 6-2
Page 19
19
Maintenance (continued)
5. Check the indexing teeth on the inner reel and
outer spool for wear (Fig. 6-2). If necessary, remove
burrs or replace the reel and spool.
NOTE: Membrane line can only be used with the
inner reel with the slotted holes. Single line can be
used on either type of inner reel. Use figure 6-3 to
identify the inner reel you have.
NOTE: Always use the correct line length when
installing trimming line on the unit. The line may
not release properly if the line is too long.
Single Line Installation
Go To Step 8 for Membrane Line Installation
6. Take approximately 40 feet (12.2 m) of new trimming line, loop it into two equal lengths. Insert each
end of the line through one of the two holes in the
inner reel (Fig. 6-4). Pull the line through the inner
reel so that the loop is as small as possible.
7. Wind the lines in tight even layers, onto the reel
(Fig. 6-5). Wind the line in the direction indicated on
the inner reel. Place your index finger between the
two lines to stop the lines from overlapping. Do not
overlap the ends of the line. Proceed to step 11.
Membrane Line Installation
8. Take approximately 20 feet (6.1 m) of new trimming
line. Insert one end of the line through one of the
two holes in the inner reel (Fig. 6-6). Pull the line
through the inner reel until only about 4 inches is
left out.
9. Insert the end of the line into the open hole in the
inner reel and pull the line tight to make the loop as
small as possible (Fig. 6-6).
10. Before winding, split the line back about 6 inches.
11. Wind the line in tight even layers in the direction
indicated on the inner reel.
NOTE: Failure to wind the line in the direction indicated will cause the cutting attachment to operate
incorrectly.
12. Insert the ends of the line into the two holding slots
(Fig. 6-7).
13. Insert the ends of the line through the eyelets in the
outer spool and place inner reel with spring inside
the outer spool (Fig. 6-8). Push the inner reel and
outer spool together. While holding the inner reel
and outer spool, grasp the ends and pull firmly to
release the line from the holding slots in the reel.
NOTE: The spring must be assembled on the inner
reel before reassembling the cutting attachment.
14. Hold the inner reel in place and install the Bump
Knob by turning counterclockwise.
Tighten securely.
Slotted
Holes
For Use with Membrane
Line or Single Line
For Use with
Single Line ONLY
Loop
Loop
Holding Slots
Fig. 6-3
Fig. 6-4
Fig. 6-6
Fig. 6-7
Fig. 6-5
Page 20
20
Maintenance (continued)
INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew
the Bump Knob clockwise (Fig. 6-1, Pg. 18).
Inspect the bolt inside the Bump Knob to make
sure it moves freely. Replace the Bump Knob if
damaged.
2. Remove the old inner reel from the outer spool
(Fig. 6-1, Pg. 18).
3. Remove the spring from the old inner reel
(Fig. 6-1, Pg. 18).
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner
reel before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the
outer spool (Fig. 6-8).
6. Place the new inner reel inside the outer spool.
Push the inner reel and outer spool together. While
holding the inner reel and outer spool, grasp the
ends and pull firmly to release the line from the
holding slots in the spool.
7. Hold the inner reel in place and install the Bump
Knob by turning counterclockwise.
Tighten securely.
Replacement Parts:
See Accessories / Replacement Parts on page 24.
CHECKING THE OIL LEVEL
To prevent extensive engine wear and damage to
the unit, always maintain the proper oil level in
the crankcase. Never operate the unit with the oil
level below the bottom of the dipstick.
The importance of checking and maintaining the proper
oil level in the crankcase cannot be overemphasized.
Check oil before each use:
1. Stop engine and allow oil to drain into the
crankcase.
2. Place the unit on a flat, level surface to get a proper oil level reading.
Spring
Fig. 6-8
Top of Dipstick
Oil Fill Plug/Dipstick
O-Ring
Oil Fill
Plug/Dipstick
Oil Fill Hole
O-Ring
3. Keep dirt, grass clippings, etc., out of the engine.
Clean the area around the oil fill plug/dipstick
before removing it.
4. Remove the oil fill plug/dipstick and wipe off oil.
Reinsert it all the way back in.
5. Remove the oil fill plug/dipstick and check oil level.
Oil should be up to the top of the dipstick (Fig. 6-9).
6. If the level is low, add a small amount of oil to the
oil fill hole and recheck (Fig. 6-10). Repeat until the
oil level reaches the top of the dipstick.
NOTE: Do not overfill the unit.
NOTE: Make sure the O-ring is in place on the oil fill
plug/dipstick when checking and changing the oil
(Fig. 6-10).
CHANGING THE OIL
For a new engine, change the oil after the first 10 hours
of operation. Thereafter, change the oil after every 25
hours or before storing the unit for an extended period
of time.
It is best to change the oil while the engine is still
warm. The oil will flow freely and carry away more
impurities.
Wear gloves to prevent injury when handling the
unit.
Fig. 6-9
Fig. 6-10
Page 21
21
Maintenance (continued)
Fig. 6-11
1. Unplug spark plug boot to eliminate starting
2. Remove the oil fill plug/dipstick.
3. Pour the oil out of the oil fill hole and into a container by tipping the unit to a vertical position
(Fig. 6-11). Allow ample time for complete drainage.
4. Wipe up any oil residue on the unit and clean up
any oil that may have spilled. Dispose of the oil
according to Federal, State and local regulations.
5. Refill the crankcase with 3.4 fluid oz (100 ml) of
SAE 30 SF, SG, SH oil. Use the bottle and spout
from initial use to measure the correct amount.
6. Replace the oil fill plug/dipstick.
7. Reconnect spark plug boot.
AIR FILTER MAINTENANCE
Cleaning the Air Filter
To avoid serious personal injury, always turn your
trimmer off and allow it to cool before you clean
or do any maintenance on it.
Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Not maintaining the air filter will VOID the warranty.
1. Remove the air filter cover by pulling up the two
tabs on the bottom back of the cover, then pull out
and up (Fig. 6-12).
2. Remove the air filter (Fig. 6-12).
3. Wash the filter in detergent and water. Rinse the
filter thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor oil to lightly coat
the filter (Fig. 6-13).
5. Squeeze the filter to spread and remove excess oil
(Fig. 6-13).
6. Reinstall the filter (Fig. 6-14).
Air Filter
Choke
Lever
Air Filter Cover
Ta b
Slots
Back Plate
7. Reinstall the air filter cover by positioning the notch
on top of the air filter cover onto the tab at the top
of the back plate (Fig. 6-12).
8. Using two fingers on either side of the air filter
cover and back plate, squeeze together until the
cover snaps into place (Fig. 6-12).
NOTE: If the unit is operated without the air filter,
you will VOID the warranty.
Fig. 6-12
Fig. 6-13
Fig. 6-14
Page 22
22
Maintenance (continued)
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable the screw
next to the air filter cover (Fig 6-15).
NOTE: Careless adjustments can seriously damage
your unit. An authorized service dealer should make
carburetor adjustments.
Check Fuel
Old fuel is usually the main reason for the unit not
running properly. Drain and refill the tank with clean,
fresh unleaded fuel prior to doing any adjustments. See
Section 4, Oil and Fuel, Recommended Fuel.
Clean Air Filter
The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and
change the air/fuel mixture. This is often mistaken for
an out of adjustment carburetor. Check the condition of
the air filter before adjusting the idle speed screw. See
Section 6, Maintenance, Air Filter Maintenance.
Adjust Idle Speed Screw
The cutting attachment may be spinning during
idle speed adjustment. Wear protective clothing
and observe all safety instructions to prevent
serious personal injury.
If after checking the fuel and cleaning the air filter the
engine still will not idle, adjust the idle speed screw as
follows.
1. Start the engine and let it run at a high idle for a
minute to warm up.
2. Release the throttle trigger and let the engine idle. If
the engine stops, insert a small phillips or flat blade
screwdriver into the screw next to the air filter
cover (Fig. 6-15). Turn the idle speed screw in,
clockwise, 1/8 of a turn at a time (as needed) until
the engine idles smoothly.
NOTE: The cutting attachment should not rotate
when the engine idles.
3. If the cutting attachment rotates when the engine
idles, turn the idle speed screw counterclockwise
1/8 of a turn at a time (as needed), to reduce idle
speed.
Idle
Adjustment
Screw
Checking the fuel mixture, cleaning the air filter, and
adjusting the idle speed screw should solve most
engine problems.
If not and:
• The engine will not idle,
• The engine hesitates or stalls on acceleration,
• There is a loss of engine power,
have the carburetor adjusted by an
authorized service dealer.
When the unit is turned off make sure the cutting
attachment has stopped before the unit is set
down to prevent serious personal injury.
ROCKER ARM CLEARANCE
NOTE: This requires some disassembly of the
engine. If you feel unsure or unqualified to perform
this, take the unit to an authorized service center.
Inspect the valve to rocker arm clearance every 50
hours of operation using a flat feeler gauge.
NOTE: The engine must be cold when checking or
adjusting the valve clearance.
This task should be performed inside, in a clean, dust
free area.
1. Loosen the four (4) screws shown in figure 6-16.
2. Remove the three (3) screws that secure the engine
cover (Figs. 6-16 and 6-17).
3. Disconnect the spark plug wire.
4. Remove the spark plug
5. Remove the engine cover (Fig. 6-16).
6. Remove the screw holding the rocker arm cover
with a large flat blade screwdriver or Torx T25 bit
(Fig. 6-18). Remove the rocker arm cover, and
gasket.
7. Pull the starter rope slowly to bring the piston to
Top Dead Center.
• While looking in the spark plug hole (Fig. 6-18),
the piston is at the top of the stroke.
• Both valves are closed.
• Both rocker arms move freely.
If not, repeat this step.
8. Slide the feeler gauge between the rocker arm and
the valve return spring. Measure the clearance
between the valve stem and rocker arm (Fig 6-19).
Do both intake and exhaust valves.
The recommended clearance for both intake and
exhaust is .003–.006 inch (.076–.0152 mm). The
feeler gauge should slide between the rocker arm and
valve stem with a slight amount of resistance, without
binding.
Fig. 6-15
Page 23
23
Maintenance (continued)
9. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm)
wrench or nut driver (Fig. 6-19).
To increase clearance, turn the adjusting nut
counterclockwise.
To decrease clearance, turn the adjusting nut
clockwise.
b. Recheck both clearances, and adjust as neces-
sary. Clearance for both intake and exhaust is
.003–.006 inch (.076–.0152 mm)
10. Reinstall the rocker arm cover using a new gasket.
Torque the screw to 20–30 in•lb (2.2–3.4 N•m).
Remove
Screws
Back of Engine
Loosen
Screws
Remove Screw
Engine Cover
Rocker Arm Cover
Adjusting Nut
Feeler
Gauge
Rocker Arm
Gasket
Spark Plug
Hole
11. Reinstall the engine cover. Check alignment of the
cover before tightening the screws. Tighten screws.
12. Check the spark plug and reinstall. See Replacing
the Spark Plug.
13. Replace the spark plug wire.
REPLACING THE SPARK PLUG
Use a Champion RDZ19H spark plug (or equivalent).
The correct air gap is 0.025 inch (0.655 mm). Remove
the plug after every 50 hours of operation and check its
condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull the cap from the spark plug.
2. Clean dirt from around the spark plug. Remove the
spark plug from the cylinder head by turning a 5/8
inch socket counterclockwise.
3. Replace cracked, fouled or dirty spark plug. Set the
air gap at 0.025 inch (0.655 mm) using a feeler
gauge (Fig. 6-20).
Do not sand blast, scrape, or clean electrodes.
Grit in the engine could damage the cylinder.
4. Install a correctly gaped spark plug in the cylinder
head. Tighten by turning the 5/8 inch socket clockwise until snug.
If using a torque wrench torque to;
110-120 in.•lb. (12.3-13.5 N•m).
Do not over tighten.
0.025 inch
(0.655 mm)
Fig. 6-19
Fig. 6-20
Fig. 6-18
Fig. 6-17
Fig. 6-16
Page 24
24
Maintenance (continued)
ACCESSORIES/REPLACEMENT PARTS
Oil Fill Plug / Dipstick . . . . . . . . . . . . . . . . . . . . . . . . . .181975
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180852
Spark Arrestor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182153
Replacement Line Cartridge . . . . . . . . . . . . . . . . 49U5001L063
Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610636
Bump Head Knob Assembly . . . . . . . . . . . . . . . . . . . . . 180814
Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181083
4-Tooth Cutting Blade . . . . . . . . . . . . . . . . . . . . 49M5873L063
Blade Retaining Kit
(includes lock nut & retaining washer) . . . . . . . . . . . . 180014
Shoulder Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682075
These replacement parts can be purchased from your
local authorized dealer.
CLEANING
To avoid serious personal injury, always turn your
trimmer off and allow it to cool before you clean
or do any maintenance on it.
Use a small brush to clean off the outside of the unit.
Do not use strong detergents. Household cleaners that
contain aromatic oils such as pine and lemon, and
such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth.
STORAGE
• Never store the unit with gasoline in the tank where
fumes may reach an open flame or spark.
• Allow the engine to cool before storing.
• Store the unit locked up to prevent unauthorized use
or damage.
• Store the unit in a dry, well ventilated area.
• Store the unit out of the reach of children.
LONG TERM STORAGE
If the unit will be stored for an extended time,
1. Drain all gasoline from the gas tank into a
container. Do not use gas that has been stored
for more than 60 days. Dispose of the old gasoline
in accordance to Federal, State, and Local
regulations.
2. Start the engine and allow it to run until it stalls.
This ensures that all gasoline has been drained
from the carburetor.
3. Allow the engine to cool. Remove the spark plug
and put 1 oz. (30 ml) of high quality motor oil into
the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the
oil from the cylinder before attempting to start the
trimmer after storage.
4. Thoroughly clean the unit and inspect for any loose
or damaged parts. Repair or replace damaged
parts and tighten loose screws, nuts or bolts. The
unit is ready for storage.
TRANSPORTING
• Allow the engine to cool before transporting.
• Secure the unit while transporting.
• Drain the gas tank before transporting.
• Tighten gas cap before transporting.
Page 25
25
Section 7
Troubleshooting
CAUSE ACTION
Cutting attachment bound with grass Stop the engine and clean cutting attachment
Cutting attachment out of line Refill with new line
Inner reel bound up Replace the inner reel
Cutting head dirty Clean inner reel and outer spool
Line welded Disassemble, remove the welded section
and rewind the line
Line twisted when refilled Disassemble and rewind the line
Not enough line is exposed Push the Bump Knob and pull out line until
4 inches (102 mm) of line is outside of the
cutting attachment
CAUSE ACTION
Old Gasoline Drain fuel tank / Add fresh Gasoline
Improper carburetor adjustment Take to an authorized service dealer for
carburetor adjustment
CAUSE ACTION
On/Off Stop Control is in STOP position Turn On/Off Stop Control to START
Empty fuel tank Fill fuel tank
Primer bulb wasn't pressed enough Press primer bulb fully and slowly 5-7 times
Engine flooded Use starting procedure with choke lever in the
RUN position, Pg. 14
Old Gasoline Drain fuel tank / Add fresh Gasoline
Fouled spark plug Replace or clean the spark plug
ENGINE WILL NOT START
ENGINE WILL NOT IDLE
ENGINE WILL NOT ACCELERATE
ENGINE LACKS POWER OR STALLS WHEN CUTTING
CAUSE ACTION
Air Filter is Plugged Replace or clean the air filter
Old Gasoline Drain fuel tank / Add fresh Gasoline
Improper carburetor adjustment Adjust per instruction Pg. 22
CAUSE ACTION
Old Gasoline Drain fuel tank / Add fresh Gasoline
Improper carburetor adjustment Take to an authorized service dealer for
carburetor adjustment
Cutting attachment bound with grass Stop the engine and clean the cutting attachment
Dirty air filter Clean or replace the air filter
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
Page 26
26
Section 8
Specifications
Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 cu. in. (26.2 cc)
Clutch Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Centrifugal
Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,600-3,600 rpm
Operating RPM (Trimmer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,700-8,600 rpm
Operating RPM (Brush cutter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8,200-10,000 rpm
Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
On/Off Stop Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Toggle Switch
Valve clearance (intake and exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .003–.006 in. (.076–.0152 mm)
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 inch (0.655 mm)
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAE 30 Oil
Crankcase Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 oz (100 ml)
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unleaded
Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position
Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto Rewind
Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard
Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Spring Return
Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 oz (591 ml)
ENGINE
DRIVE SHAFT & CUTTING ATTACHMENT
Drive Shaft Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aluminum Tube
Throttle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Finger-Tip Trigger
Unit Weight (No Fuel, with J-handle, Cutting attachment shield and Cutting attachment) . . . . . . . . . . 13.5 lbs (6.13 kg)
Cutting Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-Tooth Cutting Blade, Dual String Cutting Head
Line Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Line Releaser
Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 inches (101.6 mm)
Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.095 inches (2.41 mm)
Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 inches (44.0 cm)
Cutting Path Diameter, Cutting Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inches (204 mm)
Gear Box Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.23:1
Shoulder Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Quick-Snap
Page 27
27
Section 9
Warranty
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board and MTD
Southwest Inc (MTD), are pleased to explain the emission control system warranty on your 2000 and later
small off-road engine. In California, new small off-road
engines must be designed, built and equipped to meet
the State's stringent anti-smog standards. MTD must
warrant the emission control system on your small offroad engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your small off-road engine.
Your emission control system may include parts such
as the carburetor or fuel injection system, the ignition
system, and catalytic converter. Also included may be
hoses, belts, connectors and other emission-related
assemblies.
Where a warrantable condition exists, MTD will repair
your small off-road engine at no cost to you including
diagnosis, parts and labor.
The 2000 and later small off-road engines are warranted for two years. If any emission-related part on your
engine is defective, the part will be repaired or replaced
by MTD.
OWNER'S WARRANTY RESPONSIBILITIES:
• As the small off-road engine owner, you are
responsible for the performance of the required
maintenance listed in your operator's manual. MTD
recommends that you retain all receipts covering
maintenance on your small off-road engine, but MTD
cannot deny warranty solely for the lack of receipts
or for your failure to ensure the
performance of all scheduled maintenance.
• As the small off-road engine owner, you should however be aware that MTD may deny you warranty coverage if your small off-road engine or a part has
failed due to abuse, neglect, improper maintenance
or unapproved modifications.
• You are responsible for presenting your small
off-road engine to a MTD Authorized Service Center
as soon as a problem exists. 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 call
1-800-345-8746.
MANUFACTURER'S WARRANTY COVERAGE:
• The warranty period begins on the date the engine or
equipment is delivered to the retail purchaser.
• The manufacturer warrants to the initial owner and
each subsequent purchaser, that the engine is free
from defects in material and workmanship which
cause the failure of a warranted part for a period of
two years.
• Repair or replacement of warranted part will be performed at no charge to the owner at an Authorized
MTD Service Center. For the nearest location, please
contact MTD at: 1-800-345-8746.
• Any warranted part which is not scheduled for
replacement, as required maintenance which is
scheduled only for regular inspection to the effect of
"Repair or replace as necessary" is warranted for the
warranty period. Any warranted part which is scheduled for replacement as required maintenance will be
warranted for the period of time up to the first scheduled replacement point for that part.
• The owner will not be charged for diagnostic labor
which leads to the determination that a warranted
part is defective, if the diagnostic work is performed
at an Authorized MTD Service Center.
• The manufacturer is liable for damages to other
engine components caused by the failure of a
warranted part still under warranty.
• Failures caused by abuse, neglect or improper
maintenance are not covered under warranty.
• The use of add-on or modified parts can be grounds
for disallowing a warranty claim. The manufacturer is
not liable to cover failures or warranted parts caused
by the use of add-on or modified parts.
• In order to file a claim, go to your nearest Authorized
MTD Service Center. Warranty services or repairs will
be provided at all Authorized MTD Service Centers.
• Any manufacturer approved replacement part may be
used in the performance of any warranty maintenance or repair of emission related parts and will be
provided without charge to the owner. Any replacement part that is equivalent in performance or durability may be used in non-warranty maintenance or
repair and will not reduce the warranty obligations of
the manufacturer.
• The following components are included in the emission related warranty of the engine, air filter, carburetor, primer, fuel lines, fuel pick up/fuel filter, ignition
module, spark plug and muffler.
Page 28
MANUFACTURER’S LIMITED WARRANTY FOR:
No implied warranty, including any implied warranty of
merchantability or fitness for a particular purpose,
applies after the applicable period of express written
warranty above as to the parts as identified. No other
express warranty or guaranty, whether written or oral,
except as mentioned above, given by any person or
entity, including a dealer or retailer, with respect to any
product shall bind MTD. During the period of the
Warranty, the exclusive remedy is repair or replacement
of the product as set forth above. (Some states do not
allow limitations on how long an implied warranty lasts, so
the above limitation may not apply to you.)
The provisions as set forth in this Warranty provide the
sole and exclusive remedy arising from the sales. MTD
shall not be liable for incidental or consequential loss or
damages including, without limitation, expenses
incurred for substitute or replacement lawn care services, for transportation or for related expenses, or for
rental expenses to temporarily replace a warranted
product. (Some states do not allow limitations on how long
an implied warranty lasts, so the above limitation may not
apply to you.)
In no event shall recovery of any kind be greater than the
amount of the purchase price of the product sold. Alteration
of the safety features of the product shall void this Warranty.
You assume the risk and liability for loss, damage, or injury
to you and your property and/or to others and their
property arising out of the use or misuse or inability to use
the product.
This limited warranty shall not extend to anyone other than
the original purchaser, original lessee or the person for
whom it was purchased as a gift.
How State Law Relates to this Warranty: This warranty
gives you specific legal rights, and you may also have other
rights which vary from state to state.
To locate your nearest service dealer dial
1-800-345-8746 in the United States or
1-800-668-1238 in Canada.
MTD Southwest Inc
550 N. 54th Street
Chandler, AZ 85226 U.S.A.
The limited warranty set forth below is given by MTD
SOUTHWEST INC (“MTD”) with respect with new
merchandise purchased and used in the United States, its
possessions and territories.
MTD warrants this product against defects in material and
workmanship for a period of two (2) years commencing on
the date of original purchase and will, at its option, repair or
replace, free of charge, any part found to be defective in
material or workmanship. This limited warranty shall only
apply if this product has been operated and maintained in
accordance with the Operator’s Manual furnished with the
product, and has not been subject to misuse, abuse,
commercial use, neglect, accident, improper maintenance,
alteration, vandalism, theft, fire, water or damage because
of other peril or natural disaster. Damage resulting from the
installation or use of any accessory or attachment not
approved by MTD for use with the product(s) covered by
this manual will void your warranty as to any resulting damage. This warranty is limited to ninety (90) days from the
date of original retail purchase for any MTD product that is
used for rental or commercial purposes, or any other
income-producing purpose.
HOW TO OBTAIN SERVICE: Warranty service is available,
WITH PROOF OF PURCHASE THROUGH YOUR LOCAL
AUTHORIZED SERVICE DEALER. To locate the dealer in
your area, please check for a listing in the Yellow Pages or
contact the Customer Service Department of MTD SOUTHWEST INC by calling 1-800-345-8746 or writing to 550 N.
54th Street, Chandler, Arizona 85226 or if in Canada call
1-800-668-1238. No product returned directly to the factory will be accepted unless prior written permission has been
extended by the Customer Service Department of MTD
SOUTHWEST INC.
This limited warranty does not provide coverage in the
following cases:
A. Tune-ups - Spark Plugs, Carburetor Adjustments,
Filters
B. Wear items - Bump Knobs, Outer Spools, Cutting
Line, Inner Reels, Starter Pulley,Starter Ropes, Drive
Belts
C. MTD does not extend any warranty for products sold
or exported outside of the United States of America,
its possessions and territories, except those sold
through MTD’s authorized channels of export distribution.
MTD reserves the right to change or improve the design of
any TROY-BILT Product without assuming any obligation to
modify any product previously manufactured.
Loading...