7. Cylinder Head Valve
7-2
72
NIKOTA USA: PANTERRA SCOOTER SERVICE MANUAL
CHAPTER 7: CYLINDER HEAD VALVE
Topic Page
Important information 7-2
Trouble diagnosis 7-3
Camshaft Disassembly 7-4
Checking of Camshaft 7-7
Bearing Rocker Arm
Cylinder Head Disassembly 7-7
Cylinder Head Break Down 7-9
Checking Cylinder Head 7-9
Valve and Valve Guide 7-10
Topic Page
Valve Seat Chamfer Cutting Tools 7-12
Valve Seat Cutting 7-12
Building up of Cylinder Head 7-13
Installing Cylinder Head 7-14
Camshaft Assembly 7-15
Camshaft Chain Regulator Assembling 7-16
Important Information
•When working on the cylinder head and valve
train, always use engine oil to lubricate sliding
parts when assembling. Never assemble dry
parts into the valve train.
•The camshaft is lubricated by engine oil
supplied via an oil passage in the cylinder
head. Make sure that this passage is clean and
open when you reassemble the head.
•When measuring parts to determine wear,
wash the parts with solvent and dry them in
order to get accurate measurements.
•When disassembling the valve components,
keep them in order and reinstall them in the
reverse order.
Item
(0.04) 0.05
(0.04) 0.05
15kg/cm
2
-600rpm
25,761
25,604
10,000-10.015
10,000-10.015
9,972-9,987
9,972-9,987
1.0
1.0
4,975-4,900
4.955-4,970
5,000-5,012
5,000-5,012
0.010-0.037
0.030-0.057
29.1
33.5
0.05
25.681
25.24
10.10
10.10
9.91
9.91
1.8
1.8
4.9
4.9
5.3
5.3
0.08
0.10
26.1
30.5
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
Inner spring
Outer spring
Valve gap (cold)
Cylinder head compressed pressure
Cylinder head surface twisting
Camshaft conver angle height
Valve rocker arm inner diameter
Valve rocker arm bearing outer diameter
Valve seat angle
Valve bar outer diameter
Valve guide pipr inner diameter
Gap between valve bar and guide pipe
Valve spring
Standard valve Used Limit
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