Troubleshooting - Honda UMK425T Owner's Manual

When the engine will not start:
1.Is the engine switch in the ON position?
2.Is there fuel in the fuel tank (see page 22)?
Gasoline is extremely flammable and explosive under certain
conditions. Do not smoke or allow flames or sparks in the area.
3.Is gasoline reaching the carburetor?
To check, press the priming pump several times (see page 37).
4.Is the spark plug in good condition?
Clean, readjust gap and dry the spark plug. Replace it if necessary
(see page 58).
5.If the engine still does not start, take the grass/weed trimmer to an
authorized Honda dealer.
When an abnormal vibration occurs during operation, immediately turn
off the engine and check the cutting attachment is properly installed
and tightened securely, and inspect it for wear, crack or any other
damage. If necessary, replace it (see page 30).

12. TROUBLESHOOTING

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