Honda TRX400EX FOURTRAX 1999, Service Manual

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7.
CYLINDER
HEAD/VALVE
ITEM
Cylinder compression at
IN
SERVICE INFORMATION
7-1 VALVE GUIDE REPLACEMENT 7-12
TROUBLESHOOTING 7-3 VALVE SEAT 7-13
CYLINDER COMPRESSION 7-4 CYLINDER HEAD ASSEMBLY/
CYLINDER HEAD
INSTALLATION 7-16
REMOVAL
7-4 HEAD COVER
DISASSEMBLY 7-9
CYLINDER HEAD REMOVAL/ INSTALLATION 7-18
STANDARD SERVICE LIMIT
686- 883
(7.0
-
9.0 100 - 128 psi)
SERVICE INFORMATION
Cam
lobe height
GENERAL
. . . . ,
.
,
EX 0.12
IN (1.2076- 1.2115) 30.57 (1.204)
30.37 (1.196)
EX
(1.1995- 1.2035)
This section covers service of the camshaft. rocker arms, cylinder head and valves. These parts can be serviced with
the engine installed in the frame.
Shaft
O.D.
When disassembling, mark and store the disassembled parts to ensure that they are reinstalled in their original loca-
tions.
Clean all disassembled parts with cleaning solvent and dry them by blowing them off with compressed air before
inspection.
Camshaft and lubricating oil is fed through oil passages in the cylinder head. Clean the oil passages before assem-
bling cylinder head.
Pour clean engine oil into the oil pocket
in
the cylinder head during assembly to lubricate the camshaft.
Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head.
Do
not
strike the head cover and cylinder head too hard during removal.
SPECIFICATIONS
Unit:
mm
0.03 (0.001)
11.53 (0.454)
11.518
11.466- 11.484 (0.4514-0.4521) 11.41
Valve clearance
Camshaft
Rocker arm
Sub-rocker arm
Valve,
valve guide
Valve spring
Valve stem
O.D.
7-