Yamaha WR250F 2017, Owner'S Service Manual

Page: 301 / 432

CRANKCASE
6-72
EAS2GBB310
CRANKCASE
Separating the crankcase
Order Part name Q’ty Remarks
Engine Refer to “ENGINE REMOVAL” on page 6-1.
Piston
Refer to “CYLINDER AND PISTON” on page
6-32.
Balancer
Refer to “OIL PUMP AND BALANCER
GEAR” on page 6-59.
Kick shaft assembly Refer to “KICKSTATER” on page 6-51.
Segment Refer to “SHIFT SHAFT” on page 6-54.
Generator rotor
Refer to “GENERATOR AND STARTER
CLUTCH” on page 6-66.
1 Timing chain guide (exhaust side) 1
2 Timing chain guide stopper plate 1
3 Timing chain 1
4 Bolt [L = 45 mm (1.77 in)] 7
5 Bolt [L = 60 mm (2.36 in)] 2
6 Bolt [L = 75 mm (2.95 in)] 3
7 Right crankcase 1
8 Left crankcase 1
9 Dowel pin 2
3
1
5
2
6
4
10
5
6
4
4
4
4
6
9 11
7
8
9
LT
12
LT
10 Nm (1.0 m kgf, 7.2 ft Ibf)
T.R.
12 Nm (1.2 m kgf, 8.7 ft Ibf)
T.R.
12 Nm (1.2 m kgf, 8.7 ft Ibf)
T.R.
12 Nm (1.2 m kgf, 8.7 ft Ibf)
T.R.
5 Nm (0.5 m kgf, 3.6 ft Ibf)
T.R.