AY50K3/SK3/WK3/WSK3 (’03-MODEL) 12-11
THERMOSTAT + RADIATOR + ENGINE COOLANT TEMP. SWITCH +
ENGINE COOLANT
TRANSMISSION
Unit: mm Except ratio
CARBURETOR
ITEM STANDARD/SPECIFICATION LIMIT
Thermostat valve opening temper-
ature
Approx. 65 °C —
Thermostat valve lift Over 3 mm at 80 °C —
Radiator reservoir cap valve open-
ing pressure
100 kPa (1.0 kgf/cm
2
)—
Engine coolant temp. switch
operating temperature
ON Approx. 125 °C —
OFF Approx. 118 °C —
Engine coolant type Use an anti-freeze/coolant compatible with alumi-
num radiator, mixed with distilled water only, at the
ratio of 50:50.
—
Engine coolant including reserve 1 200 ml —
ITEM STANDARD LIMIT
Reduction ratio Variable 2.975 – 1.033 —
Final reduction ratio 16.271 (51/15 × 67/14) —
Drive belt width 18.4 17.4
Driven face spring free length 110 104.5
ITEM SPECIFICATION
Carburetor type KEIHIN PWS14
Bore size 14 mm
I.D. No. 35EA
Idle r/min. 1 900 ± 200 r/min.
Float height 5.1 ± 0.5 mm
Main jet (M.J.) #62
Jet needle (J.N.) N5GJ-2nd
Pilot jet (P.J.) #45
Air screw (A.S.) 1" turns back
Throttle cable play 2 – 4 mm
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