Generac MFH500 — Draining Overfill Containment
Maintenance
For the Generac MFH500, from the Generac owner's manual.
Applies to: Generac MFH500, Isuzu 4JJ1TT4 engine
Before you start
- Only perform this procedure once unit has cooled.
Procedure
- Locate the threaded plug at the front and underneath the unit.
- Place a suitable container below the threaded plug.
- Remove the threaded plug and drain the fluid into the container.
- Insert and tighten the threaded plug once draining has stopped.
- Dispose of the fluid according to local, state, or national regulations.
Tools required
- Suitable container Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Generac MFH500 →, Isuzu 4JJ1TT4 engine →
Source: Generac owner's 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.