Yamaha YZ250FX 2021, Owner'S Service Manual

Page: 252 / 378

CRANKCASE
5-66
EAM20116
CRANKCASE
Separating the crankcase
Order Job/Parts to remove Q’ty Remarks
Engine Refer to “ENGINE REMOVAL” on page 5-6.
Piston
Refer to “CYLINDER AND PISTON” on page
5-33.
Balancer Refer to “OIL PUMP” on page 5-60.
Segment Refer to “SHIFT SHAFT” on page 5-56.
Stator coil assembly Refer to “GENERATOR” on page 5-38.
1 Timing chain guide stopper plate 1
2 Timing chain guide (exhaust side) 1
3 Timing chain 1
4 Bolt 7 [L = 45 mm (1.77 in)]
5 Bolt 3 [L = 60 mm (2.36 in)]
6 Bolt 3 [L = 75 mm (2.95 in)]
7 Right crankcase 1
8 Left crankcase 1
9 Dowel pin 2
10 Crankshaft 1
11 Oil nozzle 1
3
1
5
2
6
4
10
5
5
5
4
4
4
9
7
8
11
9
LT
LT
12 N
・
m (1.2 k g f
・
m, 8 .9 lb
・
ft)
( 3 )
( 3 )
(7)
6
6
5 N ・ m (0.5 k g f ・ m, 3 .7 lb ・ ft)
10 N ・ m (1.0 k g f ・ m, 7.4 lb ・ ft) 12 N ・ m (1.2 k g f ・ m, 8 .9 lb ・ ft)
12 N ・ m (1.2 k g f ・ m, 8 .9 lb ・ ft)
12 N
・
m (1.2 k g f
・
m, 8 .9 lb
・
ft)