Yanmar — Checking Pinion Projection Length
Adjustments · Electric Starter Motor
From a Yanmar service manual covering: YDG2700, YDG2700EV-6EH, YDG2700EV-G6EH, YDG2700EV-GEH, YDG3700, YDG3700EV-6El, YDG3700EV-GEI, YDG5500, YDG5500EV-6El. Check it applies to your exact model before use.
Applies to: Yanmar YDG2700, Yanmar YDG2700EV-6EH, Yanmar YDG2700EV-G6EH, Yanmar YDG3700, Yanmar YDG5500, Yanmar L70V engine, Yanmar L100V engine, Yanmar L4sV L70V L100V engine
Procedure
- Measure the gap between pinion and pinion stop with the pinion at the projected position and pressed back lightly.
- If not within specifications, adjust the dust covers to obtain the standard range.
- Check the distance between the flywheel ring gear and starter motor pinion in the rest position (mesh clearance).
Tools required
- Caliper Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Pinion projection length (Length L) 0.012 - 0.059 in. (0.3 - 2.5 mm)
- Mesh clearance must be 0.12 in. - 0.20 in. (8.0 mm - 5.0 mm)
- Dust covers available in 0.020 in. (0.5 mm) and 0.031 in. (0.8 mm) thicknesses
Full service-parts list: Yanmar YDG2700EV-G6EH →
Source: Yanmar 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.