SERVICING INFORMATION 18-3
RADIATOR + COOLANT
TRANSMISSION + DRIVE CHAIN
CARBURETOR
ITEM STD/SPEC. LIMIT
Radiator cap valve release
pressure
95 – 125 kPa
(0.95 – 1.25 kgf/cm
2
, 14 – 18 psi)
—
Engine coolant type Use a anti-freeze & Summer coolant compatible
with aluminum radiator, mixed with distilled water
only, at the ratio of 50: 50.
—
Engine coolant capacity 1 100 ml
(1.2/1.0 US/Imp qt)
—
ITEM STD/SPEC. LIMIT
Primary reduction ratio 3.000 (63/21) —
Final reduction ratio 3.846 (50/13) —
Gear ratios Low 1.800 (27/15) —
2nd 1.470 (25/17) —
3rd 1.210 (23/19) —
4th 1.000 (21/21) —
Top 0.869 (20/23) —
Shift fork to groove
clearance
No.1, 2 & 3
0.1 – 0.3 mm
(0.004 – 0.012 in)
0.5 mm
(0.020 in)
Shift fork groove width
No.1, 2 & 3
4.8 – 4.9 mm
(0.189 – 0.193 in)
—
Shift fork thickness
No.1, 2 & 3
4.6 – 4.7 mm
(0.181 – 0.185 in)
—
Drive chain Type DID 520DMA2 —
Links 114 links —
20-pitch length —
323.8 mm
(12.75 in)
Drive chain slack 40 – 50 mm
(1.6 – 2.0 in)
—
Gearshift lever height 0 – 5 mm below
(0 – 0.2 in)
—
ITEM STD/SPEC.
Carburetor type KEIHIN PWK38S
Bore size 39 mm (1.54 in)
I.D. No. 37FB
Float height 6.5 mm (0.26 in)
Main jet (M.J.) #172
Jet needle (J.N.) NEDH-4th
Cut-away (C.A.) #7
Slow jet (S.J.) #50
Air screw (A.S.) 1 turn out
Power jet (PW.J.) #55
Throttle cable play 2.0 – 4.0 mm (0.08 – 0.16 in) at the throttle grip
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