Suzuki UF50 User Manual

8-4 UF50K1 AND UF50ZK1 (’01-MODEL)
CYLINDER + PISTON + PISTON RING Unit: mm
ITEM STANDARD LIMIT
Piston to cylinder
clearance
0.06 – 0.07
0.120
Cylinder bore 41.005 – 41.020
Measure at 20 mm from the top surface
41.075
Piston diam. 40.940 – 40.955
Measure at 15 mm from the skirt end
40.885
Cylinder distortion ——— 0.05
Cylinder head distortion ——— 0.05
Piston ring free 1st R Approx. 4.0 3.2
end gap
2nd R Approx. 4.3 3.4
Piston ring end gap 1st &
2nd
R 0.10 – 0.25 0.80
Piston ring to 1st 0.03 – 0.07 ———
groove clearance
2nd 0.02 – 0.06 ———
Piston pin bore 10.002 – 10.010 10.030
Piston pin O.D. 9.995 – 10.000 9.980
CONROD + CRANKSHAFT Unit: mm
ITEM STANDARD LIMIT
Conrod small end I.D. 14.003 – 14.011 14.040
Conrod deflection ——— 3.0
Crank web to web width 36.0 ± 0.05 ———
Crankshaft runout ——— 0.05
OIL PUMP
ITEM SPECIFICATION
Oil pump reduction ratio 30.000 (30/1)
Oil pump discharge rate 0.8 – 1.2 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 4 300 ± 200 r/min. ———
Clutch lock-up 5 900 ± 300 r/min. ———
TRANSMISSION Unit: mm Except ratio
ITEM STANDARD LIMIT
Reduction ratio Variable 2.975 – 1.033 ———
Final reduction ratio 13.812 (51/15 × 65/16) ———
Drive belt width 18.4 17.4
Driven face spring free length 110 104.5
SERVICE DATA

Suzuki UF50 Specifications

General

Brand	Suzuki
Model	UF50
Category	Scooter
Language	English