Yanmar 6LY2-STE — Cylinder head assembly
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
- Clean bolt holes and cylinder head surface.
- Coat head bolt threads and nut seats with lube oil.
- Install head gasket with positioning pins.
- Mount cylinder head.
- Tighten bolts in specified order.
- First 118 N·m, second 177 N·m, final 216~236 N·m.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 118 N·m first
- 177 N·m second
- 216~236 N·m final
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.