Troubleshooting - Craftsman 917.377960 Owner's Manual

6.75 horsepower 21" multi-cut power propelled rotary lawn mower
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IMPORTANT: Nevercovermower w h_
.=ngine a nde_aust areasarestillwarm.
CAUTION: Neverstorethe lawn mower
with gasolinein the tankinsidea building
where fumesmayreachanopen flameor
spark. Allowthe engineto coolbefore
storingin any enclosure.
tROUBLESHOOTING
CHART
PROBLEM
Viii not start
.oss of power
)oor cut
uneven
CAUSE
Dirty air filter.
Out of fuel.
Stale fuel.
Water in fuel.
Spark plug wire is disconnected.
Bad spark plug.
Loose blade or broken blade
adapter.
Control bar in released position
Control bar defective
1.
2.
3.
4.
5.
6.
7.
8.
9.
1.
Rear of lawn mower
housing/blade dragging
in heavy grass.
2.
Cutting too much grass.
3.
Dirty air tilter.
4.
Buildup of grass, leaves
and trash under mower.
5.
Too much oil in engine.
6.
Walking speed too fast.
1.
Wom, bent o_ loose blade.
2.
Low engine speed.
CORRECTION
J1. Clean/replace air tilter.
2.
Fill fuel tank_
3.
Drain tank and refill with fresh
clean fuel.
4.
Drain fuel tank and carb_etor
and refill tank with fresh gasoline.
5.
Connect wire to plug.
6.
Replace spark plug.
7. Tighten blade bolt or replace blade
adapter.
8.
Depress control bar to handle.
Engine flywheel brake is
on when control bar is released.
Bent engine crankshaft
9.
Replace control bar.
1. Set in "Higher Cut" position.
2.
Set in "Higher Cut" position.
3.
Cleardraplace air filter.
4.
Clean underside of mower housing
5. Check oil level.
6. Cut at slower walking speed.
1.
2.
3.
Buildup of grass, leaves, and
3.
trash under mower.
:xcessive
1.
Worn, bent or loose blade.
1.
Replace blade. Tighten blade bolt.
,ibration
2.
Bent engine crankshaft.
2. Contact an authorized service
centerldepartment.
;tarter rope
=ard to pull
Blade adapter broken.
Blade dragging in grass.
1.
2.
3.
4.
Replace blade. Tighten blade boll
Set engine speed control in fast
position.
Clean underside of mower housing
1.
Depress control bar to upper
handle before pulling starter rope.
2. Contact an authorized service
centerldepartment.
3. Replace blade adapter.
4. Move lawn mower to cut grass or
to hard surface to start engine.
16

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