Mitsubishi — Inspection and Adjustment of Fuel Injection Timing
Adjustments · Unit injector
From a Mitsubishi service manual — check it applies to your exact model before use.
Browse Mitsubishi generators & specs →
Before you start
- Start with cylinder No.1 and adjust all cylinders.
Procedure
- Bring No.1 cylinder to TDC compression stroke with pointer aligned to mark.
- Turn engine about 60° reverse, then slowly forward to injection timing mark.
- Insert height gage into injector gage stand and check protrusion against tappet.
- If misaligned, loosen lock nut on adjusting screw.
- Adjust screw so height gage protrusion aligns with tappet surface.
- Tighten lock nut; repeat for all cylinders.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuel injection timing ±1° BTDC; refer to caution plate
Source: Mitsubishi 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.