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MAINTENANCE SPECIFICATIONS
SPEC
Item Standard Limit
Automatic centrifugal clutch:
Clutch shoe thickness
Clutch housing inside diameter
Clutch shoe spring free length
Weight outside diameter
Clutch – in revolution
Clutch – stall revolution
3.0 mm
135 mm
28.1 mm
20 mm
2,100 X 2,700 r/min
3,700 X 4,700 r/min
2.0 mm
135.5 mm
SSS
19.5 mm
SSS
SSS
V-belt:
V-belt width
22.6 mm 21.0 mm
Carburetor:
Type
I.D. mark
Ventuly outside diameter
Main jet (M.J)
Main air jet (M.A.J)
Jet needle (J.N)
Throttle valve size (Th.V)
Pilot air jet (P.A.J.1)
Needle jet (N.J)
Pilot outlet (P.O)
Pilot jet (P.J)
Bypass (B.P)
Pilot screw (P.S)
Valve seat size (V.S)
Starter jet 1 (G.S.1)
Starter jet 2 (G.S.2)
Float height (F.H)
Engine idle speed
Intake vacuum
Oil temperature
Cooling water temperature
Y28V-1B-1
4UC 00 [4UD 00 (CH, A)]
ø28
#130
ø0.9
5D32-3/5
11_
ø1.2
ø2.585
ø0.8
#44
0.7 4
17/8
1.4
ø0.45
ø0.5
27 mm
1,450 X 1,550 r/min
220 X 260 mmHg
65 X 75_C
80_C
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
Fuel pump:
Type
Model/manufacturer
Vaccum type
4HC/MIKUNI
SSS
SSS
Oil pump:
Type
Tip clearance
Side clearance
Housing and rotor clearance
Trochoid type
0.1 X 0.34 mm
0.013 X 0.036 mm
0.04 X 0.09 mm
SSS
0.4 mm
0.15 mm
0.15 mm