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2. GENERAL INFORMATION VITALITY 50
SERVICE INFORMATION (2-STROKE)
ENGINE Standard (mm) Service Limit (mm)
Item VITALITY 50
Cylinder head warpage 0.10
Piston O.D.(5mm from bottom of piston skirt) 38.95538.970 38.90
Cylinder-to- piston clearance 0.10
Piston pin hole I.D. 12.00212.008 12.03
Piston pin O.D. 11.99412.0 11.98
Piston-to-piston pin clearance
Piston ring end gap (top/second) 0.100.25 0.40
Connecting rod small end I.D. 17.00517.017 17.03
Cylinder bore 39.039.025 39.05
Drive belt width 18 17
Drive pulley collar O.D. 19.9619.974 19.94
Movable drive face ID. 20.01120.052 20.6
Weight roller O.D. 15.9216.08 15.4
Clutch outer I.D. 107107.2 107.5
Driven face spring free length 87.9 82.6
Driven face O.D. 33.96533.985 33.94
Movable driven face I.D. 34.00034.025 34.06
Connecting rod big end side clearance
Connecting rod big end radial clearance
Crankshaft runout A/B
CARBURETOR VITALITY
Setting mark PB168A
Type PB 14
Float level 8.6mm
Main jet #85 (Speed limit type: #72)
Slow jet #35
Air screw opening 2 1/21/2
Idle speed 1850100rpm
Throttle grip free play 26mm
Jet needle clip notch 1st notch
2-6