This guide is being updated.
We are still checking the facts on this page against manufacturer and shop sources, so some sections are incomplete.
It is hidden from search engines until that work is done.
Last updated October 28, 2026 · Applies to: generators from Honda, Briggs & Stratton and Kohler
Cause 1: Tripped breaker or GFCI outlet
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Cause 2: Loss of residual magnetism
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Cause 3: Failed automatic voltage regulator (AVR)
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Cause 4: Worn brushes or slip rings
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Cause 5: Eco/idle mode or overload
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Cause 6: Faulty outlet or wiring
Step-by-step instructions for this cause are being written.
Generator electrical output. Engine speed is fine but no volts: start at the outlet and breaker, then the AVR and brushes.
Which cause is it?
The decision table is being compiled from shop pricing and manufacturer data.
Brand notes
Brand-specific notes for Honda, Briggs & Stratton and Kohler are being researched.
When to take it to a shop
Hand it over if the engine still will not run after the fuel, spark and air checks, if you find metal in the oil or the
engine is seized, or if the machine is under warranty (opening it yourself can void it).
Find a generator repair shop near you
Use your location to jump to the nearest city we cover, or pick your state.
Answers being written: Why does my generator run but not produce electricity? · How do I flash a generator? · How do I test a generator AVR? · Is it safe to troubleshoot generator wiring?