Loss Of Power - TM-10-3930-607-150085

FUEL

TROUBLESHOOTING

CAUSE

REMEDY

2. Clogged air cleaner

2. Clean. Service more often.

3. Low grade of fuel

3. Change to a better grade of fuel.

4. Rich air-fuel mixture, defective carburetor

4. Refer to CARBURETOR - Troubleshooting Guide, and

fuel pump

FUEL PUMP - Troubleshooting Guide.

Loss Of Power

1. Restricted exhaust system

1. Check heat control valve; loosen, if stuck.

Replace restricted muffler and exhaust pipes.

2. Clogged air cleaner

2. Clean. Service more often.

3. Low grade of fuel

3. Change to a better grade of fuel.

4. Rich or lean air-fuel mixture, defective

4. Refer to CARBURETOR - Troubleshooting

carburetor or fuel pump

Guide and FUEL PUMP - Troubleshooting Guide.

5. Carburetor throttle valve not opening

5. Adjust throttle control so that the throttle completely

valve will open and close completely.

6. Carburetor choke valve partially closed

6. Push choke button in. Check and adjust choke valve so

that it opens and closes completely.

7. Fuel filter clogged or low fuel pump

7. Clean. Service more often. Check fuel pressure in tank.

If dirty, drain and clean tank. Refill with clean fuel. Refer to

FUEL PUMP - Troubleshooting Guide.

Engine Cannot Reach Governed RPM

1. Clogged air cleaner

1. Clean. Service more often.

2. Clogged fuel filter or low fuel pump pressure

2. Clean. Service more often. Check fuel in tank. If dirty,

drain and clean tank. Refill with clean fuel. Refer to FUEL

PUMP - Troubleshooting Guide.

3. Rich or lean air-fuel mixture, defective

3. Refer to CARBURETOR - Troubleshooting

carburetor or fuel pump

Guide and FUEL PUMP - Troubleshooting Guide.

B-48