There are several possible causes for this, such as:
A loose or disconnected spark plug wire
A faulty or dirty spark plug
A clogged or faulty fuel system
A broken or chafed wire from the starter
A bad voltage regulator or battery
A malfunctioning safety switch or ignition switch
You wll have to check each one of these, clean what is dirty, replace what is broken or clogged, make sure the spark gat is .76 mm if you change the plugs. You will need a multimeter to check the voltage regulator.
- Disconnect the three-wire connector from the voltage regulator.
- Connect the jumper wire from the negative battery terminal to the black wire terminal on the voltage regulator.
- Connect the red probe of the multimeter to the red wire terminal on the voltage regulator, and the black probe to the jumper wire.
- Set the multimeter to measure DC voltage and turn the ignition switch to the ON position. You should see a reading of about 12 volts. If not, the voltage regulator is faulty and needs to be replaced.
- Turn the ignition switch to the OFF position and disconnect the multimeter and the jumper wire.
- Reconnect the three-wire connector to the voltage regulator and the negative battery cable to the battery terminal.
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