• Check the generator output using a voltage meter.
• If the voltage is low then the engine rpm can be adjusted at the carburetor.  Slowly increase the engine speed while monitoring the output voltage.  Adjust as needed until the voltage is close to 120 volts.

Alternator Troubleshooting:

• Alternator: Check the battery voltage with the engine running and not running.  This can be done using a multimeter or a voltage meter.  Measured across the battery terminals the voltage should be 12 volts +/- 1 volt with the engine off.  With the engine running the voltage should be greater 13.8 and close 14 volts.
• Check for corrosion on the battery terminal connections.   If the battery terminals are corroded the alternator could appear to have a low output, but actually just a bad connection.  Disconnect and clean the battery terminals and connections with a wire brush and terminal cleaner (baking soda and water).
• Check the alternator drive belt.  A loose or worn belt can significantly decrease the alternator output.  If the belt is found to be loose or worn tighten the belt and/or replace with a new belt and then retest the voltage output of the alternator before pulling.

Starter Troubleshooting:

• First check the power supply connections from the battery.  Loose or corroded connections can prevent the starter solenoid for engaging.
• The most common cause of starter failure is the solenoid.  This is good to know because a solenoid can be replace at a fraction of the cost of a new starter.  But you can not purchase a solenoid for you starter at most auto parts stores.  This is one of the benefits of bringing your starter to me for testing to determine the problem.