Suzuki LT-Z400 2003 - Page 65

CYLINDER HEAD DISTORTION
Decarbonize the combustion chamber.
Check the gasket surface of the cylinder head for distortion
using a straightedge and thickness gauge. Take clearance read-
ings at several places. If any clearan ce reading exceeds the ser-
vice limit, replace the cy lin der head with a new one.
IrQ ! 09900-20803: Thickness gauge
~ Cylinder head di stortion
Serv i ce Limit: 0.05 mm (O . OO2 In)
VALVE STEM RUNOUT
Support the valve using V-blocks and measure the valve stem
runout using the
dial gauge, as sh ow n. If t he ru nou t exceeds the
serv ice li mit, replace the valve with a new one.
Ii!:! 09900-20606: Dial gauge (11100 mm)
09900-20701 : Magnetic stand
09900-21304: V- block set (100 mm)
~ Valve stem runout
Serv i ce Limit: 0.05 mm (0.002 in)
VALVE HEAD RADIAL RUNOUT
Suppo rt the valve using a V-block and measure the valve head
radial runout using the dial gauge, as shown. If the runout
exceeds the service
limit, replace the valve with a new one.
, 1M , 09900-20606: Di al gauge (11100 mm)
0991)0.20701 : Magnetic stand
09900-21304: V-block sel (100 mm)
B Valve head radial runout
Service Limit : 0.03 mm (0. 001 in)
VALVE FACE WEAR
Visually inspect each valve face for wear or damage. If any
abnormal wear is found, replace the respective valve with a new
one. Measure the
valve head thickness <D . If the valve head
thickness is not within the specified
value, repl ace the valve with
a new one.
dEl 09900-20101 : Vernier calipers
~ Valve head thickness <D
Service limit: 0.5 mm (0. 02 In)
ENG I NE 3-21