Yanmar 6LY2-STE — Fuel injection pump disassembly
Repair & overhaul
For the Yanmar 6LY2-STE, from the Yanmar service manual.
Applies to: Yanmar 6LY2-STE, Yanmar 6LY2-STE/6LY2A-STP/6LYA-STP engine
Procedure
- Wash outside of pump.
- Remove governor weight assembly.
- Remove fuel feed pump.
- Remove camshaft woodruff key.
- Remove bearing holder bolts.
- Pull out camshaft bearing holder.
- Remove camshaft.
- Remove roller guide parts.
- Remove control rack.
- Remove delivery valve holder.
- Remove delivery valve assembly.
- Remove plunger barrel.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Yanmar 6LY2-STE →
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.