Craftsman 28813 - 46 in. Lawn Tractor Operation Manual page 31

TROUBLESHOOTING CHART:
See appropriate section in manual unless directed to Sears service center
PROBLEM
Excessive vibration
Engine continues tc
run when operator
leaves seat with
attachment clutch
engaged
Poor cut - uneven
cutting
CAUSE
6 Faulty spark plug.
7 Dirty fuel filter.
8 Stale or dirty fuel.
9 Water in fuel.
10 Spark plug wire loose.
11 Dirty engine air screen/fins.
12 Dirty/clogged muffler.
13 Loose or damaged wiring.
14 Carburetor out of adjustment.
15 Engine valves out of adjustment.
1 Worn, bent or loose blade.
2 Bent blade mandrel.
3 Loose/damaged part(s).
1 Faulty operator-safety presence
control system.
Mower blades will
not rotate
Poor grass
discharge
CORRECTION
6 Clean and regap or change spark
plug.
7 Replace fuel filter.
8 Empty fuel tank and refill tank witk
fresh, clean gasoline.
9 Empty fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
10 Connect and tighten spark plug
wire.
11 Clean engine air screen/fins.
12 Clean/replace muffler.
13 Check all wiring.
14 See "To Adjust Carburetor" in
Service and Adjustments section.
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 Tighten loose part(s).
Replace damaged parts.
1 Check wiring, switches and
connections. If not corrected,
contact a Sears or other
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.
31
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.