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Maintenance
Beforeinspecting,cleaningor servicingthe machine, shut off engine, discon-
nectsparkplugwire, and make surethatall movingpartshavecometo a com-
plete stop. Removeignitionkeyonelectricstartmodels.
Failure to follow these instructionscan result in personal injury or property
damage.
NOTE: LEFTand RIGHTsides of unit areas viewed
from operator's position behind the handlebars.
REQUIREDMAINTENANCESCHEDULE
BEFOREEVERY EVERY EVERY AS
REQUIREDMAINTENANCE EACH 5 25 100 NOTED
USE HOURSHOURSHOURS
CHECKENGINEOIL LEVEL
CHECKTRIMMERLINES 1
CHECKTRIMMERHEADENGAGEMENT
MACHINECLEANING 3
CHECKNUTSANDBOLTS
CHANGEENGINEOIL 2, 5
SERVICEAIR FILTERSYSTEM 5
CLEANUNDERDECK
GENERALLUBRICATION
INSPECTDRIVEBELT
CLEANENGINE 4
CHECKWEARCUP 6
Chart5-1
ADJUSTING TRIMMER
HEADENGAGEMENT
Thetension on the drive belt must be
correct for proper operation of the
trimmer head. If the tension is correct,
the trimmer headwill rotate whenthe
Trimmer HeadControl Bail is pulled back
againstthe handlebar.
A looseor worn drive beltwill causethe
trimmer headto move slowly, or not at
all,when the control bail is engaged(belt
squealingmay also be noticeable).
If thebelt tension is too tight, the
trimmer headmay rotate beforethecon-
trol bail is engaged,or whenthere is no
freeplay in the control bail. Toadjust
belttension:
1. Stopthe engine and wait for all parts
to stop moving. Adjust the position of
the two jam nuts on the control cable
adjustment stud (seeFigure5-2) as
describednext:
a. Totighten belt tension, movethe
upper nut (A, Figure5-2) upwardone
or two full turns, then move the lower
nut (B) upward. Tighten both nuts
securely. Test unit and readjustjam
nuts asneeded.
b. To loosenbelt tension, move the
lower nut (B, Figure5-2) downward
one or two full turns and then move
the upper nut (A) down. Tightenboth
nuts securely. Testunit and readjust
jam nuts asneeded.
NOTE1- Newline replacementis suggestedwhen old lineis 50% or lessof original length.
NOTE2- Changeoil after first two hours of newoperation; thereafter every25 hours.
NOTE3- Cleandailyif usedinextremelydusty/dirtyconditions (seeenginemanual).
NOTE4- Cleanbefore using machine and ateachfuel refill,
NOTE5- Servicemore often if used inextremely dusty or dirty conditions (seeengine
manual).
NOTE6- Replacewhen severe gougesexist on bottom surface.
A
B
Figure5-2".Belttensionadjustment.
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