Yamaha BR250F Service Manual page 140

Model
Transmission:
Type
Range of Ratio
~ngagement
RPM
Shift RPM
Sheave Center Distance" A"
Sheave Offset "B"
V-belt:
Part No.
Outside Circumference
Width
I I
A"
Wear Limit "B"
BR250TJ
V-belt Automatic
3.5 : 1 -- 1 : 1
Approx. 2,800 r/min
Approx. 5,700 r/min
266 mm (10.47 in)
11 mm (0.433 in)
8F2-17641-00
1,099 mm (43.26 in)
31.6 mm (1.24 in)
28.0 mm (1.10 in)
Primary Sheave Spring:
Part No.
Color Code
Outside Dia. x Wire Dia. '
Pre-load/Set Length
Spring Rate
No. of Coils
Free Length
Primary Sheave Weight Arm:
Part No.
Weight x Quantity
Additional Weight type
Hole Position
27 -
90501-553A5
Gold-Red
55.0 x 5.5 mm (2.165 x 0.217 in)
14 kg/61.5 mm (2.42 in)
2.64 kg/mm
4.9
66.8 mm (2.63 in)
8VO-17632·00
46.1 9 x 3 pes
None
None