Troubleshooting - Honda HS521 Owner's Manual

9. TROUBLESHOOTING
When the engine will not start:
1. Is the engine switch on?
2. Is the fuel valve on?
3. Is there enough fuel?
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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.
4. Is gasoline reaching the carburetor?
To check, loosen the drain screw with the fuel valve on. Fuel should
flow freely.
5. Is there a spark at the spark plug?
a. Remove the spark plug cap. Clean any dirt from around the spark
plug base, then remove the spark plug.
b. Install the spark plug in the plug cap.
c. Turn the engine switch on.
d. Grounding the side electrode to any engine ground, crank the engine
to see if sparks jump across the gap.
e. If there are no sparks, replace the plug.
If OK,,try to start the engine according to the instructions.
6. If the engine still does not start, take the snowthrower to an authorized
Honda snowthrower dealer.
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