Honda TRX400EX FOURTRAX 1999 Service Manual page 118

Measure piston pin hole I.D. in an X and Y axis. Take
the maximum reading to determine the I.D.
SERVICE LIMIT 20.060 mm (0.7898 in)
Measure the piston pin
SERVICE LIMIT: 19.964 mm (0.7860 in)
Calculate the piston-to-piston pin clearance.
SERVICE LIMIT 0.096 mm (0.0038 in1
Measure the connecting rod small end
SERVICE LIMIT: 20.067 mm (0.7900 in)
Calculate the connecting rod-to-piston pin clearance.
SERVICE LIMIT: 0.103 mm (0.0041 in)
CYLINDER STUD BOLT REPLACEMENT
Remove the stud bolts from the cylinder
Install new stud bolts in their proper positions and
tighten them.
A 10 x 92 mm stud bolt
C: 10 x 73 mm stud bolt
TORQUE 20 N.m 12.0 kgf.m, 14 IbfW
After installation, measure the stud height from the
cylinder surface.
SPECIFIED HEIGHT: A 81.5 k 0.5 mm (3.21 k 0.02 in)
Adjust the stud height if necessary.
8-6
O.D.
at three points.
B 49.5 k 0.5 mm (1.95
C: 62.5 k 0.5 mm (2.46 0.02 in)