Nakayama GS9500, Owner'S Manual, Page: 16 / 18

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Warning!
Before performing any maintenance procedure or inspection, stop the engine, wait five minutes to allow all parts to cool.
Disconnect the spark plug wire, keeping it away from the spark plug.
Troubleshooting Table
SYMPTOM POSSIBLE CAUSE
The engine won’t start.

Is the ignition switch in the “ON” position?

Is the fuel shut - off valve on?

Are you using fresh, clean gas? If the gas is old, change it. Use a fuel
stabilizer if you keep gas longer than 30 days.

Is the spark plug clean? If the spark plug is dirty or cracked, change it.
If it’s oily, leave it out, hold a rag over the plug hole and pull the recoil
cord several times to blow out any oil in the cylinder, then wipe off
the plug and reinsert it.
The engine lacks power
or is not running
smoothly.

Check that the Throttle Lever is in the “Run” position.

Is the air filter clean? If it’s dirty, change it. Is the spark plug clean? If
it’s fouled or cracked, change it. If it’s oily, leave it out, hold a rag over
the plug hole and pull your recoil cord several times to blow out any
oil in the cylinder, then wipe off the plug and reinsert it.

Are you using fresh, clean unleaded gas? If it’s old, change it. Use a
fuel stabilizer if you keep gas longer than 30 days.

Does your engine have the right amount of clean oil? If it’s dirty,
change it following the procedure in the engine manufacturer’s
owner’s manual.

Check the oil level and adjust as needed.
Engine smokes.

Check the oil level and adjust as needed.

Check the air filter and clean or replace if needed.

You may be using the wrong oil —too light for the temperature. Refer
to your Engine Owner’s Manual for detailed information.

Clean the cooling fins if they’re dirty.
Machine does not seem
to have full chipping
power.

The belts may be too loose and slipping. Adjust or replace belts as
need.