Yamaha F115A Service Manual page 284

POWR
CRANKSHAFT AND PISTON/
CONNECTING ROD ASSEMBLY
5580
a
5595
5600
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
crank pin in parallel to the crankshaft.
(3) Assemble the connecting rod onto the
crank pin.
NOTE:
• Make sure
"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.
Bolt
1st: 15 Nm
2nd: 60˚
(6) Remove the connecting rod cap.
(7) Measure the width of the compressed
Plastigauge
(8) Select the suitable bearing from the
table below according to the measure-
ment values.
5-45

the projections
(1.5 m • kgf, 11 ft • lb)

on each crank pin.
E
onto the
a
and