Troubleshooting - Sears Craftsman 450 Serie Manual De Uso

This section addresses minor service issues. To locate the nearest Sears Service Center or to schedule service, simply contact Sears at 1-888-331-4569.
Problem
Engine fails to start
Engine runs erratically
Engine overheats
Engine does not shut off
Wheels/Tines will not turn
Tines turn, but wheels don't
Wheels turn, but tines don't
Poor tilling performance

TROUBLESHOOTING

Before performing any type of maintenance/service, disengage all controls
and stop the engine. Wait until all moving parts have come to a complete
stop. Disconnect spark plug wire and ground it against the engine to prevent
unintended starting. Always wear safety glasses during operation or while
performing any adjustments or repairs.
Cause
1 . Spark plug wire disconnected .
2 . Engine Throttle Control Lever incorrectly set .
3 . Fuel tank empty or stale fuel .
4 . Dirty air filter .
5 . Defective or incorrectly gapped spark plug .
6 . Misadjusted throttle control .
7 . Dirt or water in fuel tank .
1 . Defective or incorrectly gapped spark plug .
2 . Dirty air filter(s) .
3 . Carburetor out of adjustment .
4 . Stale gasoline .
5 . Dirt or water in fuel tank .
6 . Engine cooling system clogged .
1 . Engine cooling system clogged .
2 . Carburetor out of adjustment .
3 . Oil level is low .
1 . Misadjusted throttle control or ignition switch .
1 . Improper use of controls .
2 . Worn, broken, or misadjusted drive belt(s) .
3 . Internal transmission wear or damage .
4 . Bolt loose in transmission pulley .
1 . Bolt loose in transmission pulley .
2 . Internal transmission wear or damage .
1 . Tine holder mounting hardware missing .
2 . Bolt loose in transmission pulley .
3 . Internal transmission wear or damage .
1 . Worn tines .
2 . Improper Depth Regulator setting .
3 . Incorrect throttle setting .
4 . Forward Drive Belt slipping .
WARNING
1 . Reconnect wire .
2 . Put lever in START position .
3 . Fill tank with clean, fresh gasoline .
4 . Clean or replace filter .
5 . Clean, adjust gap, or replace .
6 . Contact your Sears Parts & Repair Center .
7 . Contact your Sears Parts & Repair Center .
1 . Clean, adjust gap, or replace .
2 . Clean or replace .
3 . Contact your Sears Parts & Repair Center .
4 . Replace with fresh gasoline .
5 . Contact your Sears Parts & Repair Center .
6 . Clean air cooling system .
1 . Clean air cooling area .
2 . Contact your Sears Parts & Repair Center .
3 . Check oil level .
1 . Contact your Sears Parts & Repair Center .
1 . Review Operation section .
2 . Replace or adjust belts .
3 . Contact your Sears Parts & Repair Center .
4 . Tighten bolt .
1 . Tighten bolt .
2 . Contact your Sears Parts & Repair Center .
1 . Replace hardware .
2 . Tighten bolt .
3 . Contact your Sears Parts & Repair Center .
1 . Replace Tines .
2 . See "Tilling Tips & Techniques . "
3 . See Service & Maintenance Section .
4 . See Service & Maintenance Section .
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Remedy