11-8 AY50K1 K2/WRK1 K2 (’01 ’02-MODEL)
AY50WRK1
CYLINDER + PISTON + PISTON RING Unit: mm
ITEM STANDARD LIMIT
Piston to cylinder
clearance
0.035 – 0.045
0.120
Cylinder bore 41.010 – 41.025
Measure at 20 mm from the top surface
41.105
Piston diam. 40.970 – 40.985
Measure at 23 mm from the skirt end
40.890
Cylinder distortion ——— 0.05
Cylinder head distortion ——— 0.05
Piston ring free
1st &
T Approx. 4.5 3.6
end gap
2nd
N Approx. 3.0 2.4
Piston ring end gap 1st &
2nd
T&N 0.08 – 0.18 0.80
Piston ring to 1st &
groove clearance 2nd
0.01 – 0.05 ———
Piston pin bore 12.002 – 12.010 12.030
Piston pin O.D. 11.996 – 12.000 11.980
CONROD + CRANKSHAFT Unit: mm
ITEM STANDARD LIMIT
Conrod small end I.D. 16.003 – 16.011 16.040
Conrod deflection ——— 3.0
Crank web to web width 38.0 ± 0.05 ———
Crankshaft runout ——— 0.05
OIL PUMP
ITEM SPECIFICATION
Oil pump reduction ratio 30.000 (30/1)
Oil pump discharge rate 0.8 – 1.0 ml
for 5 minutes at 3 000 r/min.
CLUTCH Unit: mm
ITEM STANDARD LIMIT
Clutch wheel I.D. 110.00 – 110.15 110.50
Clutch shoe thickness 3.0 2.0
Clutch engagement P-02,18,22 4 000 ± 200 r/min. ———
P-04, 26,
34, 53
4 400 ± 200 r/min ———
Clutch lock-up P-02,18,22 5 600 ± 300 r/min. ———
P-04, 26,
34, 53
6 000 ± 300 r/min. ———
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