Generac 4700 / QuietPact 40 — Starter Performance Test
Testing & diagnosis · Starter motor
For the Generac 4700 / QuietPact 40, from the Generac service manual.
Applies to: Generac 4700, Generac QuietPact 40, Generac GH-220 engine
Procedure
- Set the meter to read DC amps.
- Connect the starter motor, battery and VOM as shown.
- Insert the tachometer at end of the pinion gear and activate the starter motor.
- A starter motor in good condition will meet the specifications; if not, replace it.
Tools required
- digital multimeter (VOM) Amazon
- tachometer capable of reading up to 1,500 rpm Amazon
- fully charged 12-volt battery Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Minimum motor rpm = 800
- Maximum amps = 9
- at 12 volts DC
Full service-parts list: Generac 4700 →, Generac QuietPact 40 →
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.