Husqvarna 177817 Operator's Manual - User Manual

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WHEELED WEEDTRIMMER

177817 Rev. 4 01.27.10 BY

Printed in U.S.A.

SAFETY RULES

I. GENERAL OPERATION

• Read, understand, and follow all instruc-

tions on the machine and in the manual
before starting. Be thor ough ly familiar
with the controls and the proper use of
the machine before starting.

• Do not put hands or feet near or under

rotating parts.

• Keep all parts of your body away from

muffl er and spinning line. A hot muffl er
can cause serious burns.

• Only allow responsible individuals, who

are familiar with the instructions, to oper-
ate the machine.

• Stay away from breakable objects, such

as house windows, auto glass, green-
hous es, etc.

• Clear the area of objects such as rocks,

toys, wire, bones, sticks, etc., which
could be picked up and thrown by the
spinning lines.

• Be sure the area is clear of other people

before trimming, particularly small chil-
dren and pets. Stop machine if anyone
enters the area.

• Wear appropriate clothing such as a

long-sleeved shirt or jacket. Also wear
long trousers or slacks. Do not wear
shorts.

• Do not wear loose clothing which could

get caught in this equipment.

• Do not operate the machine when bare-

foot or wearing open sandals. Always
wear work gloves and sturdy footwear.
Leather work shoes or short boots work
well for most people. These will protect
the operator’s ankles and shins from
small sticks, splinters, and other debris,
and improve traction.

• Do not pull machine backwards unless

absolutely necessary. Always look down
and behind before and while moving
backwards.

• Do not operate the machine without

proper guards, plates or other safety
protective devices in place.

• See manufacturer’s instructions for prop-

er operation and installation of accesso-
ries. Only use accessories approved by
the manufacturer.

• Never use blades, wire, or fl ailing de-

vices. This unit is designed for line trim-
mer use only. Use of other ac ces so ries
or attachments will increase the risk of
injury.

Safety Rules ........................................ 2-4
Assembly .................................................4
Operation............................................. 5-9
Maintenance Schedule ..........................10

Maintenance .................................... 10-13
Service and Adjustments................. 14-15
Storage ............................................ 15-16
Troubleshooting .....................................17

TABLE OF CONTENTS

WARNING: This trimmer is equipped with an internal com bus tion engine and should

not be used on or near any un im proved forest-covered, brush-covered or grass-cov ered
land unless the engine’s exhaust system is equipped with a spark arrester meeting ap-
plicable local or state laws (if any). If a spark arrester is used, it should be main tained in
effective working order by the operator.
In the state of California the above is required by law (Section 4442 of the California
Public Resources Code). Other states may have similar laws. Federal laws apply on
federal lands. A spark arrester for the muffl er is available through your nearest au tho -
rized service center/department.

The operation of any trimmer can result in foreign objects thrown into
the eyes, which can result in severe eye damage. Always wear safety
glasses or eye shields while operating your trimmer or per form ing any
adjustments or repairs. We rec om mend a wide vision safety mask over
spectacles or standard safety glasses.

SERVICE NOTES

• Stop the rotating trimmer head when

crossing gravel drives, walks, or roads.
Wait for the cutting lines to stop rotating.

• Stop the engine (motor) whenever you

leave the equipment and allow it to cool,
before clean ing, repairing or inspecting
the unit. Be sure the trimmer head and
all moving parts have stopped.

• Operate only in daylight or good artifi cial

light.

• Do not operate the machine while under

the infl uence of alcohol or drugs.

• Never operate machine in wet grass.

Always be sure of your footing: keep a
fi rm hold on the handle and walk; never
run.

• If the equipment should start to vibrate

abnormally, stop the engine (motor) and
check immediately for the cause. Vibra-
tion is generally a warning of trouble.

• Always wear safety goggles or safety

glasses with side shields when op er -
at ing machine.

II. SLOPE OPERATION

Slopes are a major factor related to slip
and fall accidents which can result in
severe injury. All slopes require extra
caution. If you feel uneasy on a slope, do
not trim it.

DO:

• Trim across the face of slopes: never up

and down. Exercise extreme caution
when changing direction on slopes.

• Remove obstacles such as rocks, tree

limbs, etc.

• Watch for holes, ruts, or bumps. Tall

grass can hide obstacles.

DO NOT:

• Do not trim near drop-offs, ditches or

embankments. The operator could lose
footing or balance.

• Do not trim excessively steep slopes.
• Do not trim on wet grass. Reduced foot-

ing could cause slipping.

III. CHILDREN

Tragic accidents can occur if the operator
is not alert to the presence of children.

Chil dren are often attracted to the ma chine
and the trimming activity. Never assume
that children will remain where you last
saw them.

• Keep children out of the trimming area

and under the watchful care of another
responsible adult.

• Be alert and turn machine off if children

enter the area.

• Before and while moving backwards,

look behind and down for small children.

• Never allow children to operate the

machine.

• Use extra care when approaching blind

corners, shrubs, trees, or other objects
that may obscure vision.

IV. SERVICE

• Use extra care in handling gasoline and

other fuels. They are fl ammable and
vapors are explosive.

- Use only an ap proved con tain er.
- Never remove gas cap or add fuel

with the engine running. Allow en-
gine to cool before refueling. Do not
smoke.

- Never refuel the machine in doors.
- Never store the machine or fuel con-

tain er inside where there is an open
fl ame, such as a water heat er.

- Move away from fueling site before

starting engine.

• Never run a machine inside a closed

area.

• Never make adjustments or repairs with

the engine (motor) running. Disconnect
the spark plug wire, and keep the wire
away from the plug to prevent ac ci -
den tal starting.

• Keep nuts and bolts, especially trimmer

head and engine bolts, tight and keep
equipment in good condition.

• Never tamper with safety devices.

Check their proper operation regularly.

• Keep machine free of grass, leaves, or

other debris buildup. Clean oil or fuel
spillage. Allow machine to cool before
cleaning or storing.

• Stop and inspect the equipment if you

strike an object. Repair, if necessary,
before restarting.

• Do not change the engine governor set-

ting or overspeed the engine.

• Clean and replace safety and in struc tion

decals as necessary.

Look for this symbol to point out

im por tant safety precautions. It means
CAU TION!!! BECOME ALERT!!! YOUR
SAFE TY IS INVOLVED.

ASSEMBLY

Read these instructions and this manual in
its entirety before you attempt to assemble
or operate your new trimmer.
IMPORTANT: This trimmer is shipped
WITHOUT OIL OR GASOLINE in the
engine.
Your new trimmer has been as sem bled
at the factory with the exception of those
parts left unassembled for shipping
purposes. All parts such as nuts, wash-
ers, bolts, etc., nec es sary to complete the
as sem bly have been placed in the parts
bag. To ensure safe and proper operation
of your trimmer, all parts and hard ware
you assemble must be tightened securely.
Use the correct tools as necessary to
ensure proper tightness.

TO REMOVE TRIMMER FROM
CAR TON

1. Remove loose parts included with trim-

mer.

2. Cut down two end corners of carton

and lay end panel down fl at.

3. Remove all packing materials.
4. Roll trimmer out of carton and check

carton thor ough ly for additional loose
parts.

WARNING: In order to prevent ac-

ci den tal starting when setting up, trans-
port ing, ad just ing or making repairs,
always dis con nect spark plug wire and
place wire where it can not contact spark
plug.

CAUTION: Muffl er and other engine

parts become extremely hot during
operation and remain hot after engine
has stopped. To avoid severe burns on
contact, stay away from these areas.

WARNING: Engine exhaust, some of its

constituents, and certain vehicle com po -
nents contain or emit chem i cals known to
the State of Cal i for nia to cause can cer and
birth defects or oth er re pro duc tive harm.

HOW TO SET UP YOUR TRIMMER

TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
1. Loosen handle knobs enough to allow

upper handle to be unfolded from the
shipping position.

2. Raise upper handle section into place

on lower handle and tighten handle
knob.

3. Remove handle padding holding trim-

mer head control bar to upper handle.

22" MODELS ONLY: Your trimmer handle
can be adjusted for your trimming com-
fort. Refer to “ADJUST HANDLE” in the
Service and Adjustments section of this
manual.

Bottle of oil

Trimmer Lines

(2) Sets

Loose Parts Packed Separately

(0.130 dia. x 16.75" long)
(0.155 dia. x 18.75" long)

LIFT UP

Lower
handle

Upper handle

Handle
knob

Does not start     1. Dirty air fi lter.      1. Clean/replace air fi lter.
2. Out of fuel.      2. Fill fuel tank.
3. Stale fuel.    3. Empty fuel tank and refi ll
   with fresh, clean gasoline.
4. Water in fuel.   4. Empty fuel tank and refi ll
   with fresh, clean gasoline.
5. Spark plug wire is       5. Connect wire to spark plug.
  disconnected.
6. Bad spark plug.   6. Replace spark plug.
7. Throttle control lever not   7. Move throttle lever to FAST
  in correct position    position.
  (if equipped).

Loss of power     1. Dirty air fi lter.   1. Clean/replace air fi lter.
2. Buildup of grass, leaves,   2. Clean underside of trimmer
  and trash under trimmer.      and trimmer head.

3. Too much oil in engine.   3. Check oil level.
4. Walking speed too fast.      4. Trim at slower walking
   speed.

Excessive   1. Lines uneven or broken.   1. Check trimmer lines.
Vibration   2. Loose nuts or bolts.      2. Check all hardware,
   including engine bolts.
3. Damaged trimmer head.   3. Check/repair trimmer head.

Starter rope 1. Bent engine crankshaft. 1. Contact a qualifi ed
hard to pull service center.

Loss of 1. Belt not driving. 1. Put belt on pulleys or

head drive replace belt if broken.

Hard to push 1. Handle height position not 1. Adjust handle height
right for you. to suit.

Poor trimming     1. Trimmer line length is    1. If line is worn or broken to
performance   too short.   half of original length,
   replace line.
2. Throttle control lever not   2. Move throttle lever to FAST
  in correct position    position.
  (if equipped).

Trimmer head   1. Trimmer line not      1. Follow instructions in
does not    properly installed.    Maintenance section.
retain line   2. Broken line retainer clip.   2. Replace string carrier plate
   assembly.

3. Incorrect size of 3. Use correct diameter
trimmer line. trimmer line.

PROBLEM CAUSE CORRECTION

TROUBLESHOOTING - See appropriate section in manual unless directed
to a qualifi ed service center.

4. Touch up all rusted or chipped paint

surfaces; sand lightly before painting.

HANDLE
You can fold your trimmer handle for stor-
age.
• Loosen handle knob enough to allow

upper handle to be folded forward.

IMPORTANT: When folding the handle for
storage or transportation, be sure to fold
the handle as shown or you may damage
the control cables.

2. Start the engine and let it run until the

fuel lines and carburetor are empty.

• Never use engine or carburetor cleaner

prod ucts in the fuel tank or per ma nent
damage may occur.

• Use fresh fuel next season.
NOTE: Fuel stabilizer is an acceptable
al ter na tive in minimizing the formation
of fuel gum deposits during stor age.
Add stabilizer to gasoline in fuel tank or
storage con tain er. Always follow the mix
ratio found on stabilizer container. Run
engine at least 10 min utes after adding
stabilizer to allow the stabilizer to reach
the car bu re tor. Do not drain the gas tank
and carburetor if using fuel stabilizer.

EN GINE OIL
Drain oil (with engine warm) and replace
with clean engine oil. (See "ENGINE" in
the Maintenance section of this man ual).

CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through

spark plug hole into cylinder.

3. Pull starter handle slowly a few times

to dis trib ute oil.

4. Replace with new spark plug.

OTHER

• Do not store gasoline from one season

to another.

• Replace your gasoline can if your can

starts to rust. Rust and/or dirt in your
gasoline will cause problems.

• If possible, store your unit indoors and

cover it to give protection from dust and
dirt.

• Cover your unit with a suitable protec-

tive cover that does not retain moisture.
Do not use plastic. Plastic cannot
breathe, which allows con den sa tion to
form and will cause your unit to rust.

IMPORTANT: Never cover trimmer while
en gine and exhaust areas are still warm.

CAUTION: Never store the trimmer

with gaso line in the tank inside a build ing
where fumes may reach an open fl ame
or spark. Allow the engine to cool before
storing in any en clo sure.

Upper
handle

Handle knob

ENGINE

FUEL SYS TEM
IMPORTANT: It is important to prevent
gum deposits from forming in essential
fuel system parts such as carburetor, fuel
fi lter, fuel hose or tank during storage.
Also, alcohol blended fuels (called gasohol
or using ethanol or methanol) can attract
moisture which leads to separation and
formation of acids during storage. Acidic
gas can damage the fuel system of an
engine while in storage.
1. Drain the fuel tank.

OPERATION

KNOW YOUR TRIMMER (TECUMSEH MODELS)
READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING
TRIMMER. Compare the illustrations with your trimmer to familiarize yourself with the
location of various controls and adjustments. Save this manual for future reference.

These symbols may appear on your trimmer or in literature supplied with the product.
Learn and understand their meaning.

FAST

CAUTION

FUEL

SLOW

OIL

ENGINE OFF

Trimmer head control lever
(if equipped)

Starter handle

Gasoline cap

Engine cover

Primer

Trimmer head

Handle knob

Trimmer line

Engine oil cap
with dipstick

Chassis cover

Trimmer head control bar

Throttle control

Throttle control - used for starting and
stopping the engine and allows you to
select either fast or slow engine speed.
Starter handle - used for start ing en gine.
Trimmer head control lever (if equipped)
- used to engage trimmer head.

Trimmer head control bar - must be held
down to the handle to engage trimmer
head. Release to stop the trimmer head.
Primer - pumps additional fuel from the
carburetor to the cylinder for use when
starting a cold engine.

IMPORTANT: This trimmer
is shipped WITH OUT OIL OR
GASOLINE in the engine.

Muffl er

These symbols may appear on your trimmer or in literature supplied with the product.
Learn and understand their meaning.

FAST

CAUTION

FUEL

SLOW

OIL

ENGINE OFF

Starter handle

Gasoline cap

Primer

Trimmer head

Handle knob

Trimmer line

Engine oil cap
with dipstick

Chassis cover

Trimmer head control bar

Throttle control

Throttle control - used for starting and
stopping the engine and allows you to se-
lect either FAST or SLOW engine speed.
Starter handle - used for start ing the
en gine.

IMPORTANT: This trimmer is shipped
WITH OUT OIL OR GASOLINE in the engine.

Air fi lter

Muffl er

KNOW YOUR TRIMMER (BRIGGS & STRATTON MODELS)
READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING
TRIMMER. Compare the illustrations with your trimmer to familiarize yourself with the
location of various controls and adjustments. Save this manual for future reference.

ENGINE SPEED

Your engine speed has been factory
set. Do not attempt to increase engine
speed or it may result in personal injury.
If you believe that the engine is running
too fast or too slow, take your unit to a
qualifi ed service center for repair and/or
ad just ment.

CARBURETOR

Your carburetor has a nonadjustable
fi xed main jet for mixture control. If your
engine does not operate properly due to
sus pect ed carburetor problems, take your

unit to a qualifi ed service center for repair
and/or adjustment.
IMPORTANT: Never tamper with the
engine governor, which is factory set for
proper engine speed. Over speed ing
the engine above the factory high speed
setting can be dangerous. If you think
the engine-governed high speed needs
adjusting, take your unit to a qualifi ed
service center, which has proper
equip ment and experience to make any
nec es sary adjustments.

13. Install belt around trimmer head pulley

and engine pulley.

NOTE: Be sure belt is inside belt keeper.
14. Replace debris shield and tighten the

four (4) screws securely.

15. Replace chassis cover and tighten

screw securely.

11. Assemble new belt, idler pulleys and

bottom belt keeper to idler bracket.
Tighten pulley bolts securely.

NOTE: Be sure belt is inside top belt
keeper on idler assembly.
12. Position belt and idler assembly in

trimmer, reconnect idler spring and as-
semble idler to chassis.

Belt

Idler bracket

Engine pulley

Trimmer head pulley

Top belt keeper

Chassis

Flat idler

Nut

Spacer

Bot tom

belt

keep er

Idler assembly

Spacer

Bolt

V-idler

Flat idler

Control cable

Idler
spring

STORAGE

Immediately prepare your trimmer for stor-
age at the end of the season or if the unit
will not be used for 30 days or more.

TRIMMER

When trimmer is to be stored for a period
of time, clean it thor oughly, remove all dirt,
grease, leaves, etc. Store in a clean, dry
area.

1. Clean entire trimmer (See "CLEAN-

ING" in the Maintenance section of this
manual).

2. Lubricate as shown in the Main te nance

section of this manual.

3. Be sure that all nuts, bolts, screws, and

pins are securely fas tened. Inspect
moving parts for damage, breakage
and wear. Replace if necessary.

Chassis
cover

Screw

SERVICE AND ADJUSTMENTS

CAUTION: Before performing any service and adjustments:

1.   Stop engine.
2.   Make sure the rotating lines and all moving parts have completely stopped.
3.   Disconnect spark plug wire from spark plug and place where it cannot come in con-

tact with plug.

TO REMOVE / REPLACE TRIMMER
HEAD DRIVE BELT
1. Remove screw at front of chassis

cover.

2. Lift cover up and away from trimmer.

Engine

pulley

Debris shield screws

Handle knob

Upper handle

TRIMMER

TO AD JUST TRIMMING HEIGHT
See “TO AD JUST TRIMMING HEIGHT” in
the Op er a tion sec tion of this manual.

TO ADJUST HANDLE (IF EQUIPPED)
The upper handle may be adjusted to dif-
ferent height positions.
• Loosen handle knob only enough to

allow the upper handle to pivot to the
desired position.

• Tighten handle knob securely.
NOTE: The handle knob and bolt may be
reversed for left handed operation.

3. Remove the two (2) screws on sides of

trimmer securing the debris shield.

4. Turn trimmer on its side with car bu re tor

and fuel cap up.

5. Remove the two (2) screws on under-

side of trimmer securing the debris
shield.

6. Slide the debris shield rearward and

remove.

7. Remove belt from engine pulley on

crankshaft.

TECUMSEH MODELS

BRIGGS & STRATTON MODELS

Debris shield screws

Engine
pulley

8. Remove belt from trimmer head pulley.
9. Note the position of the control cable

and idler return spring, then remove
idler assembly from chassis and re-
move belt and idler from trimmer.

10. Remove belt from idler assembly by

re mov ing bottom belt keeper and idler
pulleys.

HOW TO USE YOUR TRIMMER

ENGINE SPEED
The engine speed is controlled by a
throttle located on the side of the upper
handle. Fast position is for starting and
normal trimming. Slow is for light trimming
and fuel economy. Stop is for stopping
the engine.

TRIMMER HEAD DRIVE CONTROL
Your trimmer is equipped with a trim-
mer head drive control bar and lever (if
equipped) which require the operator to be
positioned behind the trimmer handle to
operate the trimmer.
• Trimmer head rotation is controlled by

holding the trimmer head control bar
down to the handle. If equipped with
a lever, push the drive control lever
forward until it clicks; then release the
lever.

• Trimmer head rotation will stop when

the control bar is released.

STOP

BEFORE STARTING ENGINE

ADD OIL
Your trimmer is shipped without oil in the
engine. For type and grade of oil to use,
see the engine maintenance section in
your engine manual.

CAUTION: DO NOT overfi ll engine with

oil, or it will smoke on startup.
1. Be sure trimmer is level and area

around oil fi ll is clean.

2. Remove oil dipstick from oil fi ll spout.

Make sure that rim of spout is clean.

Trimmer head control bar

TO ENGAGE
TRIMMER HEAD

TRIMMER HEAD

DISENGAGED

Drive control lever

(if equipped)

TO ADJUST TRIMMING HEIGHT
(IF EQUIPPED)

CAUTION: Stop the engine and wait

for all moving parts to stop. Disconnect
spark plug wire from spark plug and place
wire where it cannot come in contact with
plug.
The height of cut can be set to six (6) dif-
ferent positions ranging from 1-1/2 inches
to 3 inches. Recommended cutting height
for the average yard is 2 inches.
1. To adjust trimming height, push in the

locking plate tab and move trimmer
head up or down to desired position.

2. Release tab and be sure head is

locked into one of the six (6) height
positions.

Locking
Plate Tab

Adjustable
Trimmer
Head

3. You receive a container of oil with the

unit. Slowly pour 3/4 (15 oz.) of the
oil from the container down the oil fi ll
spout into the engine.

4. Wait one minute to allow oil to settle.

Insert and tighten dipstick, then re-
move it to check oil level.

5. Continue adding small amounts of

oil and rechecking the dipstick until it
reads full. DO NOT overfi ll, or engine
will smoke on startup.

6. Always be sure to retighten oil dipstick

before starting engine.

• Check oil level before each use. Add oil

if needed. Fill to full line on dipstick.

• Change the oil after every 25 hours of

operation or each season. You may
need to change the oil more often under
dusty, dirty conditions.

Gasoline fi ller cap

Engine oil cap

TECUMSEH MODELS:

BRIGGS & STRATTON MODELS:

Gasoline fi ller
cap

Engine

oil cap

ADD GASOLINE
• Fill fuel tank to bottom of gas tank

fi ller neck. Do not overfi ll. Use fresh,
clean, regular unleaded gasoline with a
minimum of 87 octane. Do not mix oil
with gasoline. Purchase fuel in quanti-
ties that can be used within 30 days to
assure fuel freshness.
CAUTION: Wipe off any spilled oil or

fuel. Do not store, spill or use gasoline
near an open fl ame.

CAUTION: Alcohol blended fuels

(called gasohol or using ethanol or
methanol) can attract moisture which
leads to separation and for ma tion of acids
during storage. Acidic gas can damage
the fuel system of an engine while in
storage. To avoid engine problems, the
fuel system should be emptied before
stor age of 30 days or longer. Empty
the gas tank, start the engine and let it
run until the fuel lines and carburetor
are empty. Use fresh fuel next season.
See Storage In struc tions for additional
information. Never use engine or
carburetor cleaner products in the fuel
tank or permanent damage may occur.

TO START ENGINE
1. To start a cold engine, push primer

three (3) times before trying to start.
Use a fi rm push. This step is not
usually necessary when starting an
engine which has already run for a few
minutes.

2. Move throttle control lever to fast posi-

tion.

3. Hold upper handle fi rmly and pull

starter handle quickly. Do not allow
starter rope to snap back.

TO STOP ENGINE
• To stop engine, move throttle control

lever to stop position.

NOTE: In cooler weather it may be
necessary to repeat priming steps. In
warmer weather overpriming may cause
fl ooding and engine will not start. If you
do fl ood engine, wait a few minutes before
attempting to start and do not repeat
priming steps.

AIR FILTER
Your engine will not run properly and may
be damaged by using a dirty air fi lter.
Replace the air fi lter every 100 hours of
op er a tion or every season, which ev er oc-
curs fi rst. Service air cleaner more often
under dusty conditions. Do not wash air
fi lter. Refer to engine manual.

MUFFLER
Inspect and replace corroded muffl er as it
could create a fi re hazard and/or dam age.

SPARK PLUG
Change your spark plug each year to
make your engine start easier and run
better. Set spark plug gap according to
engine manual specifi cations.

CLEANING

IMPORTANT: For best performance,
keep trimmer free of built-up grass and
trash. Clean the underside of your trimmer
after each use.

CAUTION: Disconnect spark plug wire

from spark plug and place wire where it
cannot come in contact with the spark
plug.
• Turn trimmer on its side. Make sure air

fi lter and carburetor are up. Clean the
underside of your trimmer by scraping
to remove build-up of grass and trash.

• Clean engine often to keep trash from

accumulating. A clogged engine runs
hotter and shortens engine life.

• Keep fi nished surfaces and wheels free

of all gasoline, oil, etc.

• We do not recommend using a gar-

den hose to clean trimmer unless the
elec tri cal system, muffl er, air fi lter and
carburetor are covered to keep water
out. Water in engine can result in short-
ened engine life.

CLEAN UNDER ENGINE COVER
(TECUMSEH MODELS ONLY)
Clean under engine cover before each
use, or more frequently in heavy cutting or
dirty conditions. Engine cover screen and
engine air intake screen must be kept free
of dirt and chaff to prevent engine damage
from over heat ing.
Be sure engine is cool before cleaning.
1.   Unscrew knob on top of cover.
2.   Lift cover up and away from engine.
3.   Clean cover and cover screen thor-

ough ly.

4. Clean top of engine and air intake

screen.

5. Replace engine cover and tighten

knob securely. Be sure the front tabs of
engine cover are located in the slots in
engine housing.

Housing slots

Air intake screen

Engine
cover
screen

Threaded

stud

Knob

Engine cover

Starter
rope

Retainer
clip

Carrier plate
opening

Trimmer
line

TO REPLACE TRIMMER LINE
1. Disconnect spark plug wire from spark

plug and place wire where it cannot
come in contact with spark plug.

2. Remove worn trimmer line from line

carrier plate.

3. Fold new, cut to length, trimmer line

in half and insert folded end through
carrier plate opening to back side of
retainer clip.

4. With folded end of line at back side of

retainer clip, pull line outward until line
is fully seated under retainer clip.

5. Repeat on other side of carrier plate.
6. Check all lines to be sure they are the

same length.

7. Reconnect spark plug wire to spark

plug.

ENGINE

Read the mantenance section of your
engine manual.
LUBRICATION

TO CHANGE ENGINE OIL
Change the oil after every 25 hours of
operation or at least once a year if the
trimmer is not used for 25 hours in one
year. Refer to engine manual.
NOTE: Before tipping trimmer to drain oil,
drain fuel tank by running engine until fuel
tank is empty.
1. Disconnect spark plug wire from spark

plug and place wire where it cannot
come in contact with spark plug.

2. Remove engine oil cap; lay aside on a

clean surface.

3. Tip trimmer on its side as shown and

drain oil into a suitable container.
Rock trimmer back and forth to remove
any oil trapped inside of engine.

4. Wipe off any spilled oil on trimmer or

on side of engine.

5. Fill engine with oil (See “ADD OIL” in

the Operation section of this manual).

6. Replace engine oil cap.
7. Reconnect spark plug wire to spark

plug.

Container

TECUMSEH MODELS

BRIGGS & STRATTON MODELS

Container

Starter
handle

Throttle
control

• Frequently clean the underside of the

trimmer to remove any grass build up.
Keep top of engine around starter clear
and clean of grass clippings and chaff.
This will help engine air fl ow and extend
engine life. See “TO REMOVE ENGINE
COVER” in the Maintenance section of
this manual.

• For best results and longer lasting

line, use the ends of the line to do the
cutting. This is easily done by moving
slowly through very thick and heavy
weeds.

• Use the left side of trimmer when trim-

ming along fences, walls, fl owerbeds
and other such objects.

• If trimmer lines become too short, it will

take longer to complete the job. If trim-
mer lines are worn to less than half their
original length, they should be replaced.
See “TO REPLACE TRIMMER LINE” in
the Maintenance section of this manual.

• Trimmer head contact with concrete, as-

phalt or other hard surfaces may cause
premature wear of the ball on bottom of
trimmer head.

TRIMMING TIPS

• Set the throttle control in the fast posi-

tion. If the weeds or grass are tall and
thick, operate the trimmer at a slower
walking speed.

GENERAL RECOMMENDATIONS

The warranty on this trimmer does not cover
items that have been subjected to operator
abuse or negligence. To receive full value
from the warranty, operator must maintain
trimmer as instructed in this manual.
Some adjustments will need to be made
periodically to properly maintain your unit.
All adjustments in the Service and Adjust-
ments section of this manual should be
checked at least once each season.
• Once a year, replace the spark plug and

replace air fi lter element. A new spark
plug and clean/new air fi lter element
assure proper air-fuel mix ture and help
your engine run better and last longer.

• Follow the maintenance schedule in this

manual.

MAINTENANCE

BEFORE EACH USE
1.   Check engine oil level.
2.   Check for loose fasteners.
3.   Clean under engine cover.

LUBRICATION
To prolong the useful life of your trimmer,
change engine oil as recommended in this
section of Operator’s Manual.
IMPORTANT: Do not oil or grease plastic
wheel bearings. Vis cous lu bri cants will
at tract dust and dirt that will short en the
life of the self- lu bri cat ing bearings. If you
feel they must be lu bri cat ed, use only
a dry, pow dered graph ite type lu bri cant
spar ing ly.

New

trimmer

line

Chassis cover

Wrap

line

around

End of
spooled line

Debris
shield
mark

TRIMMER

Always observe safety rules when per-
form ing any main te nance.

TIRES
• Keep tires free of gasoline, oil, or insect

control chemi cals which can harm rub-
ber.

• Avoid stumps, stones, deep ruts, sharp

objects and other hazards that may
cause tire damage.

TRIMMER LINE
For best results, replace trimmer lines
when they have worn to half their original
length.

20" models use .130 inch diameter trim-
mer line. Cut new trimmer line length to
16-3/4 inches.
22" models use .155 inch diameter trim-
mer line. Cut new trimmer line length to
18-3/4 inches.

After new line is installed on trimmer head,
check all lines so they do not vary more
then one (1) inch in length. This is im-
portant to make sure the trimmer head is
balanced and will not vibrate ab nor mal ly.

WARNING: Use only the specifi ed

trimmer line. Do not use other ma te ri als
such as wire, string, rope, etc. Wire can
break off during trimming and become a
dan ger ous missile that can cause serious
injury.

TO CUT LINE TO PROPER LENGTH
NOTE: Trimmer line pre-cut to proper
length is available for this unit; see the
Repair Parts section of this manual.
If trimmer line is purchased in bulk, it must
be cut to length before using. Use the
built-in length guage as follows:
1. From front of trimmer, place the end of

spooled trimmer line at the mark on the
side of the debris shield as shown.

2. Wrap trimmer line around front of chas-

sis cover to other side and cut at the
mark (for your unit’s width of cut).

20" MODELS

22" MODELS

New

trimmer

line

Chassis cover

WRAP

LINE

AROUND

End of
spooled line

Debris
shield
mark

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