Toro 41163 Operator's Manual page 47

Problem
The engine runs, but knocks or
misses.
The engine will not idle. g
The engine overheats.
Possible Causes
1. Dirt, water, or stale fuel is in the
fuel system.
2. A spark plug lead is loose.
3. A spark plug is broken.
4. Loose wires or poor
connections.
5. Engine overheating.
1. The fuel tank vent is restricted.
2. Dirt, water, or stale fuel is in the
fuel system.
3. A spark plug is damaged or
broken.
4. Carburetor idle passages are
plugged.
5. The idle speed adjusting screw
is incorrectly set.
6. The fuel pump is broken.
7. Low compression.
8. The air cleaner element is dirty.
1. The crankcase oil level is
incorrect.
2. Excessive loading.
3. The air intake screens are dirty.
4. The cooling fins and air
passages under the engine
blower housing and/or the
rotating air intake screen are
plugged.
5. The fuel mixture is lean.
47
Corrective Action
1. Drain and flush the fuel system;
add fresh fuel.
2. Reconnect the spark plug lead.
3. Replace the spark plug.
4. Check and tighten wire
connections.
5. See Engine Overheats.
1. Replace the fuel cap.
2. Drain and flush the fuel system;
add fresh fuel.
3. Replace the spark plug.
4. Contact your Authorized
Service Dealer.
5. Contact your Authorized
Service Dealer.
6. Contact your Authorized
Service Dealer.
7. Contact your Authorized
Service Dealer.
8. Clean or replace.
1. Fill or drain to the full mark.
2. Reduce load; use lower ground
speed.
3. Clean with every use.
4. Clean with every use.
5. Contact your Authorized
Service Dealer.