Power Train - Yamaha BR250F Service Manual

POWER TRAIN
Model
MAINTENANCE SPECIFICATIONS
ISPECI
cr--I
BR250T/TS
Transmission:
Type
Range of ratio
Engagement RPM
Shift RPM
Sheave center distance
JI
A"
Sheave offset "B"
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B
V-Belt:
Part number
Outside circumference
Width "A"
Wear limit "B"
A
B
I'
V-belt automatic
3.5 ""' 1.0:1
2,900 ""' 3,500 r/min (BR250T)
2,600", 3,200r/min (BR250TS)
5,600 '" 7,200 r/min (BR250T)
5,400 ""' 6,000 r/rnin (BR250TS)
264""' 268 mm (10.4 ,... 10.6 in)
8"" 14 mm (0.31 '" 0.55 in)
-- --
89X-17641-00
1.095""' 1.103 mm (43.1 .., 43.4 in)
31.6 mm (1.24 in)
28.0 mm (1.10 in)
Primary sheave spring:
Part number
Color code
Outside diameter
Wire diameter
Pre-load/Set length
Spring rate
Number of coils
Free length
Primary sheave weight arm:
Part number (with bushing)
Weight
Secondary sheave spring:
Part number
Color code
Outside diameter
Wire diameter
I
I
I
!
I
I
,
"
90501-50654
NO PAINTED
55 mm (2.2 in)
5 mm (0.2 in)
15 kg (33 Ib}/61.5 m (2.42 in)
24 N/mm (2.4 kg/mm , 134 Ib/in)
4.08
67.8 mm (2.67 in)
8V8-W176A-00
45.7
±
1 9 (1.61
±
0.04 oz)
90508-40080
NO PAINTED
50 mm (1.97 in)
4
mm (0.16 in)
-22-