Service And Adjustments - Craftsman 917.776741 El Manual Del Propietario

SPARK PLUG
Replace spark plug at the beginning of
each mowing season or after every 100
hours of operation, whichever occurs
first. Spark plug type and gap setting
are shown in the "PROD UCT SPEC I FI CA-
TIONS" section of this manual.
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 spark plug.
WARNING: To avoid serious injury, 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 wire where it cannot come in
contact with the spark plug.
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
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.
Upper
handle
Handle knob

SERVICE AND ADJUSTMENTS

13
• Turn trimmer on its side. Make sure air
filter 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 finished surfaces and wheels free
of all gasoline, oil, etc.
• We do not recommend using a garden
hose to clean trimmer unless the elec tri-
cal system, muffler, air filter and car-
buretor are covered to keep water out.
Water in engine can result in shortened
engine life.
TO REMOVE/REPLACE TRIMMER
HEAD DRIVE BELT
1. Remove screw at front of chassis cover.
2. Lift cover up and away from trimmer.
3. Remove the two (2) screws on sides of
trimmer securing the debris shield.
NOTE: Before tipping trimmer to replace
trimmer head drive belt, drain fuel tank by
running engine until fuel tank is empty.
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.
Screw
Chassis
cover