5-45
POWR
E
2. Adjust:
• Big-end oil clearance
NOTE:
Adjust the big-end oil clearance at room
temperature (20 ˚C (68 ˚F)).
Adjusting steps
CAUTION:
Remove any oil or dust from the connect-
ing-rod-bearing mounting surfaces.
(1) Install the new yellow bearings into
the connecting rods and connecting
rod caps.
(2) Put a piece of Plastigauge
onto the
crank pin in parallel to the crankshaft.
(3) Assemble the connecting rod onto the
crank pin.
NOTE:
• Make sure the projections a and
“YAMAHA” mark on the connecting rod
faces towards the flywheel side.
• Do not move the crankshaft until the big-
end oil clearance measurement has been
completed.
(4) Apply engine oil onto the threads and
seat of the original connecting rod
bolts.
(5) Tighten the original bolts to the speci-
fied torque in two stages.
(6) Remove the connecting rod cap.
(7) Measure the width of the compressed
Plastigauge
on each crank pin.
(8) Select the suitable bearing from the
table below according to the measure-
ment values.
T
R
.
.
Bolt
1st: 15 Nm
(1.5 m • kgf, 11 ft • lb)
2nd: 60˚
5580
a
5595
5600
CRANKSHAFT AND PISTON/
CONNECTING ROD ASSEMBLY
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