Yamaha YZF-R1 2020 Service Manual page 366

a
TIP
Install by carrying out the following procedures in
order to assemble in the most suitable condition.
f. Tighten the connecting rod bolt while
checking that the sections shown "a" and
"b" are flush with each other by touching
the surface.
Connecting rod bolt
30 N·m (3.0 kgf·m, 22 lb·ft)
TIP
To install the connecting rod cap, care should be
taken not to install it at an angle and the position
should not be out of alignment.
a. Side machined face
b. Thrusting faces
g. Loosen the connecting rod bolt, remove
the connecting rod and connecting rod
cap and install these parts to the crank-
shaft with the big end bearing kept in the
current condition.
TIP
• Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
• Make sure that the projection "a" on the con-
necting rod cap faces the same direction as the
" " mark "b" on the connecting rod.
b
b
a
CONNECTING RODS AND PISTONS
• Make sure the " " marks "b" on the connecting
rods face towards the left side of the crank-
shaft.
• Install the connecting rod so that the Plasti-
gauge® is in position "c" or "d".
a
h. Tighten the connecting rod bolts with a
torque wrench.
Connecting rod bolt (1st)
25 N·m (2.5 kgf·m, 18 lb·ft)
i. Put a mark "1" on the corner of the con-
necting rod bolt "2" and the connecting rod
cap "3".
j. Tighten the connecting rod bolts further to
reach the specified angle 175°–185° with
torque wrench, and then confirm that the
torque value is within the range of 40 N·m
(4.0 kgf·m, 30 lb·ft) to 85 N·m (8.5 kgf·m,
63 lb·ft) with keeping the torque wrench
5-83
b
d
c