Piston, Engine

Pistons, disassembling and assembling con rods





No. Description Qty. Notes

1 Connecting rod nut 8 Replace, tighten to specified torque. Lubricate threads and bearing surface

2 Connecting rod cap 4 Pay attention to pair numbers

3 Lower bearing 4 Always renew worn shell half bearing shells

4 Circlip 8 Removing: Pry out
Installing: Position correctly

5 Piston pin 4

6 Piston 4 Give light coat of oil; position correctly; note tolerance group

7 Piston ring 4
Groove 1
Tapered face

8 Piston ring 4
Groove 2
Tapered face
scraper ring

9 Oil scraper ring 8
Groove 3

10 Spring 4 First install spring; Groove 3 after installing oil scraper rings check whether end gaps of springs are offset

11 Upper conrod 4 Always renew worn bearing shells
bearing shell half

12 Connecting rod 4
with conrod bolts

13 Upper crankcase 1 Check cylinder bores section after mounting lower crankcase section and tightening bolts to specified torque