Craftsman YS 4500 917.28990 - Manual (Page 31)

TROUBLESHOOTING CHART:
See appropriate section in manuai unless directed to Sears service center
PROBLEM CAUSE CORRECTION
Engine clicks but 1 Weak or dead battery. 1 Recharge or replace battery.
will not start
2 Corroded battery terminals. 2 Clean battery terminals.
3 Loose or damaged wiring. 3 Check all wiring.
4 Faulty solenoid or starter. 4 Check/replace solenoid or starter.
Loss of power 1 Cutting too much grass/too fast. 1 Raise cutting height/reduce
speed.
2 Throttle in “CHOKE” position. 2 Adjust throttle control.
3 Build-up of grass, leaves and
trash under mower.
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 and regap or change spark
plug.
7 Dirty fuel fitter. 7 Replace fuel filter.
8 Stale or dirty fuel. 8 Empty fuel tank and refill tank with
fresh, clean gasoline.
9 Water in fuel. 9 Empty fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
10 Spark plug wire loose. 10 Connect and 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.
15 Engine valves out of adjustment. 15 Contact a Sears or other qualified
service center.
Excessive vibration 1 Worn, bent or loose blade. 1 Replace blade. Tighten blade bolt.
2 Bent blade mandrel. 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
run when operator
leaves seat with
attachment clutch
engaged
1 Faulty operator-safety presence
control system.
1 Check wiring, switches and
connections. If not corrected,
contact a Sears or other
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