Toro 73471 - Troubleshooting: Drive and Transmission; Erratic Tractor Operation; Loss of Power with Transmission Heat

Troubleshooting
45
PROBLEM CORRECTIVE ACTION POSSIBLE CAUSES
The engine starts, but does not
keep running
1. Misadjusted or faulty choke or
throttle control cable.
1. Contact your Authorized
Service Dealer .
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2. The fuel tank vent is
restricted.
2. Contact your Authorized
Service Dealer .
3. Dirt or water in the fuel
system.
3. Drain and flush the fuel
system; add fresh fuel.
4. The fuel filter is clogged. 4. Replace the fuel filter .
5. The fuel pump is faulty . 5. Contact your Authorized
Service Dealer .
6. The carburetor is faulty . 6. Contact your Authorized
Service Dealer .
7. Loose wires or poor
connections.
7. Check and tighten wire
connections.
8. The cylinder head gasket is
faulty.
8. Contact your Authorized
Service Dealer .
9. A fuse is blown or loose. 9. Correct or replace fuse.
The engine runs, but knocks or
misses.
1. Dirt, water or stale fuel is in
the fuel system.
1. Drain and flush the fuel
system; add fresh fuel.
sses
2. A spark plug lead is loose. 2. Reconnect the spark plug
lead.
3. A spark plug is faulty . 3. Replace the spark plug.
4. Loose wires or poor
connections.
4. Check and tighten wire
connections.
5. Engine overheating. 5. See ENGINE OVERHEA TS.
The engine will not idle.
1. The fuel tank vent is
restricted.
1. Contact your Authorized
Service Dealer .
2. Dirt, water or stale fuel is in
the fuel system.
2. Drain and flush the fuel
system; add fresh fuel.
3. A spark plug is faulty . 3. Replace the spark plug.
4. Carburetor idle passages are
plugged.
4. Contact your Authorized
Service Dealer .
5. The idle speed adjusting
screw is incorrectly set.
5. Contact your Authorized
Service Dealer .
6. The fuel pump is faulty . 6. Contact your Authorized
Service Dealer .
7. Low compression. 7. Contact your Authorized
Service Dealer .
8. The air cleaner element is
dirty.
8. Clean or replace.