Yamaha RS90NL, Suplementary Service Manual

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99
SPEC
MAINTENANCE SPECIFICATIONS
POWER TRAIN
Model RS90N/RS90NR/RS90RS/RS90GT/RS90MS
Transmission:
Type V-belt automatic
Range of ratio 3.8 ~ 1.0 : 1
Engagement speed r/min 3,400 ~ 3,800 r/min (RS90N/RS90NR/RS90RS)
3,300 ~ 3,700 r/min (RS90GT)
3,600 ~ 4,000 r/min (RS90MS)
Shift r/min 8,250 ~ 8,750 r/min
Sheave distance 267 ~ 270 mm (10.51 ~ 10.63 in)
Sheave offset 13.5 ~ 16.5 mm (0.53 ~ 0.65 in)
Secondary sheave free play (clearance) 1.0 ~ 2.0 mm (0.04 ~ 0.08 in)
Secondary sheave clearance 35.0 ~ 35.8 mm (1.38 ~ 1.41 in)
V-belt height (standard) –0.5 ~ 1.5 mm (–0.02 ~ 0.06 in)
V-belt:
Part number/Manufacturer 8DN-17641-00/MITSUBOSHI
Circumference 1,129 ~ 1,137 mm (44.4 ~ 44.8 in)
Width “A” 34.5 mm (1.36 in)
Wear limit “B” 32.5 mm (1.28 in)
Primary sheave spring:
Part number 90501-582L2 (RS90N/RS90NR/RS90RS)
90501-582L1 (RS90GT)
90501-624L8 (RS90MS)
Color code Green-Silver-Green (RS90N/RS90NR/RS90RS)
Yellow-Silver-Yellow (RS90GT)
Orange-Silver-Orange (RS90MS)
Diameter 59.5 mm (2.34 in)
Wire diameter 5.8 mm (0.228 in) (RS90N/RS90NR/RS90RS/RS90GT)
6.2 mm (0.244 in) (RS90MS)
Preload 343 N (34.98 kg, 77.11 lb)
Spring rate 27.0 N/mm (2.75 kg/mm, 154 lb/in) (RS90N/RS90NR/
RS90RS)
24.5 N/mm (2.50 kg/mm, 140 lb/in) (RS90GT)
31.9 N/mm (3.25 kg/mm, 182 lb/in) (RS90MS)
Number of coils 4.66 (RS90N/RS90NR/RS90RS)
4.92 (RS90GT)
5.00 (RS90MS)
Free length 86.1 mm (3.39 in) (RS90N/RS90NR/RS90RS)
87.4 mm (3.44 in) (RS90GT)
84.2 mm (3.31 in) (RS90MS)
Set length 73.4 mm (2.89 in)
Primary sheave weight arm:
Part number (with bush) 8ES-17605-00 (RS90N/RS90NR/RS90RS/RS90GT)
8BU-17605-20 (RS90MS)
Weight (without bush and rivets) 54.63 g (1.928 oz) (RS90N/RS90NR/RS90RS/RS90GT)
45.41 g (1.603 oz) (RS90MS)