Craftsman 28990 Operation Manual - Page 32

TROUBLESHOOTING, See appropriate, in, unless, Sears service center

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TROUBLESHOOTING CHART: See appropriate section in manual unless directed to Sears service center PROBLEM CAUSE CORRECTION Poor cut - uneven cutting Mower blades will not rotate Poor grass discharge 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. 1 Replace blade. Tighten blade bolt. 2 Level mower deck. 3 Clean underside of mower housing. 4 Contact a Sears or other qualified service center. Clean around mandrels to open vent holes. 1 Remove obstruction. 2 Worn/damaged mower drive belt. 2 Replace mower drive belt. 3 Frozen idler pulley. 3 Replace idler pulley. 4 Frozen blade mandrel. 4 Contact a Sears or other qualified service center. 1 Engine speed too slow. 1 Place throttle control in "FAST" position. 2 Travel speed too fast. 3 Wet grass. 4 Mower deck not level. 2 Shift to slower speed. 3 Allow grass to dry before mowing. 4 Level mower deck. 5 Low/uneven tire air pressure. 6 Worn, bent or loose blade. 5 Check tires for proper PSI. 6 Replace/sharpen blade bolt. blade. Tighten 7 Buildup of grass, leaves and trash under mower. 8 Mower drive belt worn. 7 Clean underside of mower housing. 8 Replace mower drive belt. 9 Blades improperly installed. 10 Improper blades used. 9 Reinstall blades sharp edge down. 10 Replace with blades listed in this manual. 11 Clogged mower deck vent holes 11 Clean around mandrels to from buildup of grass, leaves, and open vent holes. trash around mandrels. Headlight(s) not working (if so equipped) 1 Light switch is "OFF". 2 Bulb(s) or lamp(s) burned out. 3 Faulty light switch. 1 Turn light switch "ON". 2 Replace bulb(s) or lamp(s). 3 Check/replace light switch. 4 Loose or damaged wiring. 5 Blown fuse. 4 Check wiring and connections. 5 Replace fuse. Battery will not charge 1 Bad battery cell(s). 2 Poor cable connections. 3 Faulty regulator (if so equipped). 1 Replace battery. 2 Check/clean all connections. 3 Replace regulator. 4 Faulty alternator. 4 Replace alternator. 32

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TROUBLESHOOTING
CHART:
See appropriate
section in
manual
unless
directed
to
Sears service center
PROBLEM
Poor cut
-
uneven
cutting
Mower
blades
will
not rotate
Poor grass
discharge
Headlight(s)
not
working
(if
so
equipped)
Battery
will
not
charge
CAUSE
1
Worn,
bent
or loose
blade.
1
2
Mower
deck
not level.
2
3
Buildup
of grass,
leaves,
and
3
trash
under
mower.
4
Bent
blade
mandrel.
4
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.
1
Engine
speed
too
slow.
2
Travel
speed
too
fast.
3
Wet
grass.
4
Mower
deck
not level.
5
Low/uneven
tire
air pressure.
6
Worn,
bent
or loose
blade.
7
Buildup
of grass,
leaves
and
trash
under
mower.
8
Mower
drive
belt worn.
9
Blades
improperly
installed.
10
Improper
blades
used.
11
Clogged
mower
deck
vent
holes
from
buildup
of grass,
leaves,
and
trash
around
mandrels.
1
Light
switch
is "OFF".
2
Bulb(s)
or lamp(s)
burned
out.
3
Faulty
light
switch.
4
Loose
or damaged
wiring.
5
Blown
fuse.
1
Bad battery
cell(s).
2
Poor
cable
connections.
3
Faulty
regulator
(if so equipped).
4
Faulty
alternator.
CORRECTION
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.
1
Place
throttle
control
in "FAST"
position.
2
Shift
to slower
speed.
3
Allow
grass
to dry before
mowing.
4
Level
mower
deck.
5
Check
tires
for proper
PSI.
6
Replace/sharpen
blade.
Tighten
blade
bolt.
7
Clean
underside
of mower
housing.
8
Replace
mower
drive
belt.
9
Reinstall
blades
sharp
edge
down.
10
Replace
with
blades
listed
in
this
manual.
11
Clean
around
mandrels
to
open
vent
holes.
1
Turn
light
switch
"ON".
2
Replace
bulb(s)
or lamp(s).
3
Check/replace
light
switch.
4
Check
wiring
and
connections.
5
Replace
fuse.
1
Replace
battery.
2
Check/clean
all connections.
3
Replace
regulator.
4
Replace
alternator.
32