Piston Ring And Piston Assembly - Yamaha EF2800i Service Manual

PISTON, CONNECTING ROD, CRANKSHAFT AND
CRANKCASE
3. Remove:
• Connecting rod cap
• Connecting rod
4. Measure:
• Widest portion of the pressed Plasti-
gauge
Out of specification → Replace crank-
shaft or connecting rod, and then mea-
sure the clearance again.
SVU3720
Connecting rod big end oil clear-
ance:
Wear limit:

PISTON RING AND PISTON ASSEMBLY

1. Install:
• Top ring 1
• 2nd ring 2
• Oil ring 3
NOTE:
• Be sure to install the second ring so that the
manufactures mark a faces towards the
piston head.
• Make sure that the piston rings move
smoothly.
2. Apply 4-stroke engine oil to the inside of
the connecting rod small end.
3. Install:
SVU3730
• Piston 1
• Piston pin 2
• Piston pin circlip 3
NOTE:
• Make sure that the "YAMAHA" mark a on
the connecting rod faces toward the crank-
case cover.
• Make sure that the "
ton head faces toward the push rod.
SVU3740
3-36
ENG
0.015 ~ 0.040 mm
(0.0006 ~ 0.0016 in)
0.1 mm (0.004 in)
New
" mark b on the pis-