Craftsman 28927 Operation Manual - Page 31

TROUBLESHOOTING, in, unless directed, Sears service center

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TROUBLESHOOTING CHART: See appropriate section in manual unless directed to Sears service center PROBLEM CAUSE CORRECTION Loss of power 1 Cutting too much grass/too fast. 2 Throttle in "CHOKE" position. 3 Build-up of grass, leaves and trash under mower. 1 Raise cutting height/reducespeed 2 Adjust throttle control. 3 Clean underside of mower housing. 4 Dirty air filter. 4 Clean/replace air filter. 5 Low oil level/dirty oil. 5 Check oil level/change oil. 6 Faulty spark plug. 6 Clean & regap or changespark plug 7 Dirty fuel filter. 7 Replace fuel filter. 8 Stale or dirty fuel. 9 Water in fuel. 10 Spark plug wire loose. 8 Empty fuel tank and refill tank witifresh, clean gasoline. 9 Empty fuel tank and carburetor, refill tank with fresh gasoline and replace fuel filter. 10 Connect & tighten spark plug wire 11 Dirty engine air screen/fins. 11 Clean engine air screen/fins. 12 Dirty/clogged muffler. 12 Clean/replace muffler. 13 Loose or damaged wiring. 13 Check all wiring. 14 Carburetor out of adjustment. 14 See "To Adjust Carburetor" in Service and Adjustments section. Excessive vibration 15 Engine valves out of adjustment. 1 Worn, bent or loose blade. 2 Bent blade mandrel. 15 Contact a Sears or other qualified service center. 1 Replace blade. Tighten blade bolt 2 Contact a Sears or other qualified service center. 3 Loose/damaged part(s). 3 Tighten loose part(s). Replace damaged parts. Engine continues to 1 run when operator leaves seat with atta- chment clutch engaged Faulty operator-safety control system. presence 1 Check wiring, switches and connections. If not corrected, contact a Sears or other Poor cut = uneven cutting 1 Worn, bent or loose blade. 2 Mower deck not level. 1 Replace blade. Tighten blade bolt 2 Level mower deck. 3 Buildup of grass, leaves, and trash under mower. 4 Bent blade mandrel. 5 Clogged mower deck vent from build-up of grass, leaves, and trash around mandrels. 3 Clean underside of mower housing. Contact a Sears or other qualified service center. Clean around mandrels to open vent holes. Mower blades will not rotate 1 Obstruction in clutch mechanism. 1 Remove obstruction. 2 Worn/damaged mower drive belt. 2 Replace mower drive belt. 3 Frozen idler pulley. 4 Frozen blade mandrel. 31 3 Replace idler pulley. 4 Contact a Sears or other qualified service center.

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TROUBLESHOOTING
CHART:
See
appropriate
section in
manual
unless directed
to
Sears service center
PROBLEM
Loss of power
CAUSE
1
Cutting
too
much
grass/too
fast.
2
Throttle
in "CHOKE"
position.
3
Build-up
of grass,
leaves
and
CORRECTION
1
Raise cutting
height/reducespeed
2
Adjust
throttle
control.
3
Clean
underside
of mower
trash
under
mower.
4
Dirty air filter.
5
Low oil level/dirty
oil.
6
Faulty
spark
plug.
7
Dirty fuel filter.
8
Stale
or dirty
fuel.
9
Water
in fuel.
10
Spark
plug
wire
loose.
housing.
4
Clean/replace
air filter.
5
Check
oil level/change
oil.
6
Clean
& regap or changespark
plug
7
Replace
fuel
filter.
8
Empty
fuel
tank
and refill tank
witi-
fresh,
clean
gasoline.
9
Empty
fuel
tank
and carburetor,
refill tank
with fresh
gasoline
and
replace
fuel
filter.
10
Connect
& tighten
spark
plug
wire
11
Dirty engine
air screen/fins.
12
Dirty/clogged
muffler.
13
Loose
or damaged
wiring.
14
Carburetor
out of adjustment.
11
Clean
engine
air screen/fins.
Excessive
vibration
12
Clean/replace
muffler.
13
Check
all wiring.
Engine
continues
to
run when
operator
leaves
seat
with
atta-
chment clutch engaged
14
See "To Adjust
Carburetor"
in
Service
and Adjustments
section.
Poor cut
= uneven
cutting
15
Engine
valves
out of adjustment.
15
1
Worn,
bent
or loose
blade.
2
Bent
blade
mandrel.
3
Loose/damaged
part(s).
Mower
blades
will
not rotate
1
Faulty
operator-safety
presence
control
system.
1
Worn,
bent
or loose
blade.
2
Mower
deck
not level.
3
Buildup
of grass,
leaves,
and
trash
under
mower.
4
Bent
blade
mandrel.
5
Clogged
mower
deck
vent
from
build-up
of grass,
leaves,
and
trash
around
mandrels.
1
Obstruction
in clutch
mechanism.
2
Worn/damaged
mower
drive
belt.
3
Frozen
idler
pulley.
4
Frozen
blade
mandrel.
31
Contact
a Sears
or other
qualified
service
center.
1
Replace
blade.
Tighten
blade
bolt
2
Contact
a Sears
or other
qualified
service
center.
3
Tighten loose part(s).
Replace damaged parts.
1
Check
wiring,
switches
and
connections.
If not corrected,
contact
a Sears
or other
1
2
3
Replace
blade.
Tighten
blade
bolt
Level
mower
deck.
Clean
underside
of mower
housing.
Contact
a Sears
or other
qualified
service
center.
Clean
around
mandrels
to
open
vent
holes.
1
Remove
obstruction.
2
Replace
mower
drive
belt.
3
Replace
idler
pulley.
4
Contact
a Sears
or other
qualified
service
center.