Troubleshooting - Stanley 100TS Owner's Manual

Problem
Engine will not start
Engine will not keep
running/quits
Engine stops when blades
are engaged
Blades do not turn
Belts squeal when blades
are engaged
Belts slip when blades are
engaged
Rev: Mar2011
21

Troubleshooting

Possible Causes
1. Key in the OFF position
2. Insufficient fuel in the tank
3. Air bubble in the fuel line
4. Fuel valve in OFF position
5. Choke not ON
6. Choke linkage out of adjustment
7. Low engine oil
8. Blade control in ON position
9. Loose spark plug wire
10. Fouled spark plug
11. Plugged or dirty air filter
12. Bad gasoline
13. Plugged or dirty fuel filter
14. Safety switches out of
alignment or loose
15. Dead battery (electric start
models)
1. Water in the fuel
2. Loose safety switch
3. Fuel valve is OFF
4. Dirty fuel filter
5. Dirty air filter
6. Low engine oil
1. Loose safety switch
2. Belt tension too high
3. Blades jammed with foreign
material
1. Broken belt
2. Loose belt
3. Blade activation linkage out of
adjustment.
1. Incorrect belt tension
2. Excessive belt wear
1. Incorrect belt tension
2. Excessive belt wear
STANLEY Tow Behind Mower
Solution
1. Turn key to ON position
2. Add gasoline
3. Prime engine or shake bubble out
4. Turn valve ON
5. Turn choke ON
6. Refer to Engine Owner's Manual
7. Add engine oil
8. Push lever to OFF position
9. Tighten wire or connections
10. Clean or replace the plug
11. Clean or replace the air filter
12. Drain and replace the gasoline
13. Replace the fuel filter
14. Adjust or tighten switches (p. 17) - read warnings!
15. Recharge or replace battery
To test whether the blade activation safety switches
are a contributing factor to the engine not starting,
depress the Operator Presence Switch on the handle
bars while trying to start the engine. If engine starts, a
safety switch adjustment is required.
1. Drain and replace fuel
2. Adjust switch (p. 17)
3. Turn fuel valve ON
4. Replace fuel filter
5. Clean or replace air filter
6. Add engine oil
1. Adjust switch (p. 17)
2. Adjust belt (p. 19)
3. Remove foreign material
Note: Firmly pushing the blade control lever into the
OFF position to ensure the safety switch is fully
engaged can sometimes resolve this problem.
1. Replace belt
2. Adjust belt (p. 19)
3. Adjust linkage (p. 13)
1. Adjust belt tension
2. Replace belt
1. Adjust belt tension
2. Replace belt
100TS