Polaris Hawkeye User Manual

3.21
ENGINE
VALVE INSPECTION
1. Remove all carbon from valve with a soft wire wheel.
2. Check valve face for runout, pitting, and burnt spots.
To check for bent valve stems, mount valve in a drill or
use “V” blocks and use a dial indicator.
3. Check end of valve stem for flaring, pitting, wear or
damage (A).
4. Inspect split keeper groove for wear or flaring of the
keeper seat area (B). NOTE: The valves cannot be re-
faced or end ground. Valves must be replaced if worn,
bent, or damaged.
5. Measure diameter of valve stem with a micrometer in
three places and in two different directions (six
measurements total). Replace if excessive wear is
evident.
6. Measure valve guide inside diameter at the top middle
and end of the guide using a small hole gauge and a
micrometer. Measure in two directions, front to back
and side to side.
7. Subtract valve stem measurement to obtain stem to
guide clearance. NOTE: Be sure to measure each
guide and valve combination individually.
8. Replace valve and/or guide if clearance is excessive.
NOTE: If valve guides are replaced, valve seats must be
reconditioned. Refer to Valve Seat Reconditioning for
procedure.
VALVE SEAT RECONDITIONING
Valve Seat Inspection
Inspect valve seat in cylinder head for pitting, burnt spots,
roughness, and uneven surface. If any of the above
conditions exist, the valve seat must be reconditioned. If
the valve seat is cracked the cylinder head must be
replaced.
A
B
Measure valve stem in
several places
Too
Wide
Uneven
Good Too
Narrow

Polaris Hawkeye Specifications

General

Brand	Polaris
Model	Hawkeye
Category	Offroad Vehicle
Language	English