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13
SERVICE AND ADJUSTMENTS
REPLACING THE LINE
1. Press the tabs on the side of the trimmer
head and remove cover and spool.
Tab
Cover
Tap Button
2. Remove any remaining line.
3. Clean dirt and debris from all parts. Re-
place spool if it is worn or damaged.
4. Replace with a pre-wound spool, or re-
placelineusing a4,5 meters length of2,4
mm diameter McCulloch brand line.
5. When installing new line on an existing
spool, hold the spool as shown in the il-
lustration below.
6. Bend the line at the midpoint and insert
the bend into the slot in the center rim of
the spool. Ensure line snaps intoposition
in the slot.
Slot
Spool
7. With your finger between the lines, wrap
the lines evenly and firmly around the
spool in a clockwise direction.
8. Position the lines in the guide slots.
Guide
Slot
Guide Slot
9. Insert the ends of the lines through exit
holes in the sides of the cover.
10. Place the spool in the cover.
Spool
Cover
11. Make sure the lines are not caught be-
tween the rim of the spool and the wall of
the cover.
12. Reinstall the spool and cover onto the
trimmerhead.Push untilcover snapsinto
place.
BLADE REPLACEMENT
Refer totheASSEMBLY section for bladere-
placement instructions and illustrations.
CARBURETOR ADJUSTMENT
WARNING: Keep others away when
making idle speed adjustments. The trimmer
head will be spinning during most of this pro-
cedure. Wearyour protective equipmentand
observe all safety precautions. After making
adjustments, the trimmer head must not
move/spin at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may benecessary ifyou
notice any of the following conditions:
S Engine will not idle when the throttle is re-
leased.
S Thetrimmerheadmoves/spins atidlespeed.
Make adjustments with the unit supportedso
the cutting attachment is off the ground and
will not make contact with any object. Hold
theunitbyhandwhilerunningand makingad-
justments. Keep all parts of your body away
from the cutting attachment and muffler.
Idle Speed Adjustment
Allowenginetoidle.Adjustspeeduntilengine
runswithouttrimmerheadmovingorspinning
(idle speed too fast) or engine stalling (idle
speed too slow).
S Turn idle speed screw clockwise to in-
creaseenginespeedif enginestalls ordies.
S Turn idle speedscrew counterclockwise to
decrease engine speed if trimmer head
moves or spins at idle speed.
WARNING: Recheck the idle speed
after each adjustment. The trimmer head
must not move or spin at idle speed to avoid
serious injury to the operator or others.