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Craftsman 917.388260 Owner's Manual page 15

4.0 horsepower 20" rear discharge rotary lawn mower

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TROUBLESHOOTING
CHART
PROBLEM
CAUSE
Lo_ofpewer
Poor cut-
uneven
Excessive
vibration
Starter rope hard
to pull
Grass catcher
not filling (if so
equipped)
Hard to push
• Rear of lawn mower housing
or cutting blade dragging
in heavy grass
• Cutting too much grass
• Dirty air filter
• Buildup of grass, leaves,
and trash under mower
• Too much oil in engine
• Waiking speed too fast
• Worn, bent or loose blade
• Wheel heights uneven
• Buildup of grass, leaves
and trash under mower
• Wom, bent or loose blade
• Bent engine crankshaft
• Engine flywheel brake is on
when control bar is released
• Bent engine crankshaft
• Blade adapter brokan
• Blade dragging in grass
• Cutting height too low
• Lifton blade wom off
• Catcher not venting air
• Grass is too high or wheel
height is too low
• Rear of lawn mower
housing or blade dragging
in grass
• Grass catcher too full
• Handle height position not
right for you.
CORRECTION
• Set to =Higher Cut"
position
• Set to "Higher Cut"
position
• Clean/replace air filter
• Clean underside of mower
housing
• Check oil level
• Cut at slower walking
speed
• Replace blade Tighten
blade bolt
• Set all wheels at same
height
• Clean underside of
mower housing.
• Replace blade. Tighten
blade belt.
• Contact an authorized
service center.
• Depress control barto
upper handle before
pullingstarter rope.
• Contactan authorized
service center
• Replace blade adapter
• Move lawn mower to cut
grass orto hard surface
• Raise cutting height.
• Replace blade
• Clean grass catcher
• Raise cutting height
• Raise rear of lawn mower
housing one (1)
setting
higher
• Empty grass catcher
• Adjust handle height to
suit
15

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