CF MOTO CF500-5B 2009, Service Manual, Page: 14 / 272

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C F MOTO
A ir I n l e t D e v i ce + C y li nd e r H ea d
(mm)
Item Standard Operation Limit
Intake 30.6
Valve Diameter
Exhaust 27.0
Intake 0.05-0.10
Valve Clearance( Idle Speed)
Exhaust 0.17-0.22
Intake 0.010-0.037 Fit Clearance between Valve
Guide and Valve Stem Exhaust 0.030-0.057
Internal dia. of Valve Guide Intake & Exhaust 5.000-5.012
Intake 4.975-4.990
Exterior dia. of Valve Stem
Exhaust 4.955-4.970
Valve Stem Run-out Intake & Exhaust 0.05
Length of Valve Stem End Intake & Exhaust 2.9-3.1 2.3
Thickness of Valve Head Intake & Exhaust 0.5
Valve Head Seal Run-out Intake & Exhaust 0.03
Width of Valve Seats Seal Intake & Exhaust 0.9-1.1
Length of Valve Spring Intake & Exhaust 40 38.8
Valve Spring Tension Intake & Exhaust
Tension182-210N
/Length31.5mm
Intake 33.430-33.490 33.130
Cam Height
Exhaust 33.500-33.560 33.200
# 22 0.032-0.066 0.150 Fit Clearance between
Camshaft Exterior dia. &Bore.
# 17.5 0.028-0.059 0.150
# 22 21.959-21.980
Camshaft Exterior dia.
# 17.5 17.466-17.484
# 22 22.012-22.025
Camshaft Bore Internal dia.
# 17.5 17.512-17.525
Camshaft Run-out 0.10
Rocker Arm Internal dia. Intake & Exhaust 12.000-12.018
Rocker Arm Shaft Exterior dia. Intake & Exhaust 11.973-11.984
Plainness of Cylinder Head
Adjoining Plant
0.03 0.05
Plainness of Cylinder Head
Cover Adjoining Plant
0.03 0.05