Engine Mounting; Crankcase - Yamaha YTZ250S 1986 Service Manual

NOTE: ______________________ _
The engine and rear arm are installed using the
same pivot shaft. Therefore take care so that
the pivot shaft is pulled, not entirely out but
further enough to set the engine free.
ENGINE MOUNTING
Reverse the removal procedure while taking the
following care:
1. Install engine mounting bolts and nuts
with proper tightening torque.
CRANKCASE
3-27
Bolt Tightening torque
Bracket to frame
30Nm
(3.0 m ' kg, 22 ft 'Ib)
Front
Bracket to engine
30Nm
(3 .0m · kg, 22ft 'Ib)
Center, Lower
30Nm
(3.0 m ' kg, 22 ft 'Ib)
Bracket to frame
30Nm
(3 .0 m' kg , 22 ft 'Ib)
Upper
Bracket to engine
55 Nm
(5.5 m.kg, 40 ft.lb)
Pivot shaft nut:
85 Nm (8.5 m.kg, 60 ft·lb)
When installing the pivot shaft, grease it.
2. Install drive sprocket.
Drive sprocket nut torque:
75 Nm (7.5 m.kg, 54 ft·lb)