Troubleshooting - Honda BF5A Owner's Manual

Engine Will Not Start:
1. Is the shift lever in neutral?
2. Is there fuel in the fuel tank?
3. Is the fuel cap knob turned to ON?
4. Is the fuel system primed by squeezing the primer bulb?
5. Is fuel reaching the carburetor?
Loosen the carburetor drain screw to see if there is fuel in the carburetor
float bowl.
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If any fuel is spilled, make sure the area is dry before testing
the spark plug or starting the engine. Spilled fuel or fuel vapor may ignite.
6. Is the spark plug firing?
a. Remove and inspect the spark plug. Clean and dry the plug, and
check the electrode gap (p. 29).
b. Install the spark plug in cap, and ground the side electrode to any
engine ground.
c. Pull the recoil starter briskly, and see if the plug sparks.
d. If the spark plug is OK, reinstall it, and try to start the engine.
Engine Overheats:
1. Are the water intake holes clogged?
2. Is the thermostat faulty?
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