Yamaha BR250F - Page 83

Part to be tightened
Thread size
Tightening torque Remarks
Oil pump gear
case
M6 P1.0
0.7 m-kg (5.1 ft-Ib)
[Drive and track suspension]
Primary sliding
sheave and cap
M6
P1.0
1.1 m-kg (8
ft-lb)
Installation of primary sheave
UNF 1/2"
Initial:
10 m-kg (72.5 ft-lb)
Use motor oil
Loosen once and retighten:
6.0 m-kg
(43.5 ft-Ib)
Installation
of secondary sheave M12
P1.25
4.0
m-kq
(29 ft-lb]
Installation of drive chain sprocket
M12
P1.25
6.0 m-kg (43.5 ft-Ib) Use
cotter pin
Installation
of driven chain sprocket
M8 P1.25
2.3 m-kg
(16.5
ft-lb]
Chain housing and frame
M8
P1.25
2.3 m-kg (16.5
ft-Ib)
Chain hosing cap
M6 P1.0
0.65 m-kg (5
ft-lb)
Chain tensioner lock nut
M10 P1.25 3.3 m-kg
(24
ft-lb)
Installation of front axle L.H.
M20 P1.0 8.0 m-kg (58 ft-lb)
Front axle housing and frame
M8
P1.25
2.3 m-kg (16.5 ft-Ib)
Shaft 1 and frame
M10 P1.25 5.5 m-kg (40
ft-lb]
Pivot arm 1 and sliding frame 1
M10 P1.25
5.0 m-kg
(36
tt-lb)
Use Loctite®
Suspension wheel
M12 P1.25 7.3 m-kg (53
ft-lbl
Spring hook
M8 P1.0 2.3 m-kg
(16.5
ft-lb}
Sliding frame 1
M8 P1.25
2.3 m-kg
(16.5
ft-Ib)
Rear guide wheel
M8 P1.25
2.3 m-kg
(16.5
ft-lb)
SIiding runner 1
M6 P1.0
0.25 m-kg (2
ft-lb)
Use Loctite®
Sliding runner 2
M6 P1.0
0.65 m-kg (5
ft-lb]
Stopper 1
M6 P1.0 0.4 m-kg
(3
ft-lb)
[Chassis]
Engine mounting
bolt
M10 P1.25 3.0 m-kg (22 ft-lb)
Ski runner
M8 P1.25
1.4 m-kg
(10
ft-lb)
Steering column and gate
M8
P1.25
2.0 m-kg
(14.5
ft-lb)
Use lock
washer
Steering relay rod adjusting
nut
M10 P1.25
2.5 m-kg
(18 ft-lb]
Use Loctite®
Outside arm and ski colume
M10 P1.25
3.0 m-kg (22 ft-lb]
Use lock
washer
Steering lower bracket
M8 P1.25
2.0 m-kg (15 ft-Ib)
Use lock
washer
Installation
of steering column 1,2
M8
P1.25
1.45
rn-kq(10.5 ft-lb)
Steering relay ass'y
M10 P1.25
3.0 m-kg
(22
ft-lbl
Universal joint and outside arm
M10 P1.25
2.5 m-kg (18 ft-lb)
7-5