Tracker Off-Road 800SX Service Manual page 83

DE165A
7. Inspect valve springs and check for correct valve
spring length, spring inclination, or breakage.
MF156
MF157A
8. Apply a small amount of lapping compound to the
face of the valve (G) and using an appropriate lap-
ping tool, lap the valve until a uniform ring (H)
appears around the surface of the valve face (I).
MF151A
9. Wash all parts in cleaning solvent to remove lapping
compound and dry with compressed air.
10. Note the position of the lap ring on the face of the
valve. The lap ring (H) should be at or very near the
center of the valve face (I). If not within suitable tol-
erance, valves and seats must be replaced.
MF150A
11. Place the valve spring seat washer (F) in place and
using a suitable installation tool, install a new valve
stem seal (E) on the valve guide; then apply a coat of
light assembly oil on the valve stems and install
valve into the cylinder head.
MF153A
12. Place the valve spring (A), valve spring retainer (D),
and sleeve (B) into position and compress the assem-
bly sufficiently to install the collets (C); then release
the valve spring compressor tool, making sure the
collets are fully seated in the sleeve.
MF163A
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