Yamaha EF2800i - Inverter Generator, Service Manual

Page: 64 / 103

3-36
ENG
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.
Connecting rod big end oil clear-
ance:
0.015 ~ 0.040 mm
(0.0006 ~ 0.0016 in)
Wear limit:
0.1 mm (0.004 in)
SVU3720
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:
• 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 “ ” mark
b
on the pis-
ton head faces toward the push rod.
SVU3730
SVU3740
New