Honda TRX400EX FOURTRAX 1999 Service Manual page 42

MAINTENANCE
Rotate the crankshaft only counterclockwise to align
the T mark on the flywheel with the index notch in
the left crankcase cover.
Make sure the piston is TDC (Top Dead Center) on
the compression stroke.
This position can be obtained by confirming that
there is slack in the sub-rocker arm. If there is no
slack, it is because the piston is moving through the
exhaust stroke to TDC. Rotate the crankshaft one full
turn counterclockwise and match up the T mark
again.
CAUTION:
T
the mark is passed when trying to align it with the
index notch, rotate the crankshaft counterclockwise
again and align the
must be done to prevent the one-way decompressor
system from functioning and to obtain the correct
valve clearance.
Check the clearance of all valves by inserting a feeler
gauge between the adjusting screw and sub-rocker
arm.
NOTE:
When checking the clearance, slide the feeler gauge
from the inside out in the direction of the arrow.
VALVE CLEARANCES IN: 0.10 mm (0.004 in)
Adjust by loosening the lock nut and turning the
adjusting screw until there is a slight drag on the
feeler gauge.
Hold the adjusting screw and tighten the lock nut.
TORQUE 24 N.m
After tightening the lock nut, recheck the valve clear-
ance.
Coat new O-rings and install them into the grooves in
the adjusting hole caps.
Install the adjusting hole caps and tighten them.
TORQUE:
Coat new O-rings and install them onto the crank-
shaft hole cap and timing hole cap.
Install the caps and tighten them.
TORQUE:
Crankshaft hole cap: 8 N m (0.8 kgf.m, 5.8 Ibf4tl
Timing hole
Install the heat protector and fuel tank (page 2-4),
3-8
T
E X 0.12 mm (0.005 in)
(2.4 kgfm, 17
15 (1.5 kgf.m, 11 IbfW
10 N.m 11.0 kgf.m, 7 Ibf.ft1
cap: