Generac 9344 — Testing Insulation Resistance with Hi-Pot Tester
Testing & diagnosis · Stator and rotor windings
For the Generac 9344, from the Generac service manual.
Applies to: Generac 9344
Before you start
- Meggers and Hi-Pot testers deliver high voltage; do not touch generator or test leads
- Do not apply tester voltages longer than 1 second
Procedure
- Disconnect electronic components, regulators, diodes and surge protectors.
- Isolate all stator leads from ground and connect them together.
- Connect red test lead to bunched stator leads; black lead to clean frame ground.
- Set tester voltage switch to 2000 volts; apply voltage for one second only.
- If Breakdown lamp lights, clean and dry the stator and repeat the test.
- Replace stator assembly if Breakdown lamp lights on second test.
Tools required
- Hi-Pot tester or megohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Stator all leads to ground: 2000 volts for 1 second
- Isolated windings: 1500 volts
- Parallel windings: 500 volts
- Rotor: 1250 volts
Full service-parts list: Generac 9344 →
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.