CAM PULLEY/CRANKSHAFT/PISTON/ CYLINDER BLOCK
HRR216PKA
9-20
VALVE SPRING FREE LENGTH INSPECTION
Measure the free length of the valve springs.
Replace the springs if they are shorter than the service limit.
VALVE FACE/STEM O.D. INSPECTION
Inspect each valve face for pitting or wear irregularities. Inspect
each valve stem for bending or abnormal stem wear. Replace
the valve if necessary.
Measure and record each valve stem.
Replace the valves if their O.D. is smaller than the service limit.
VALVE GUIDE I.D. INSPECTION
Measure and record each valve guide I.D.
Replace the cylinder block if they are over the service limit.
VALVE SEAT WIDTH INSPECTION
1. Measure the valve seat width.
2. Recondition the valve seat (
) if any of the
following are true:
• Valve seat width is under or over the standard
• Valve seat is too high or low
• Valve seat is pitted or damaged
Standard
Service limit
30.5 mm (1.20 in)
29.0 mm (1.14 in)
Standard
Service limit
IN
5.48 mm (0.216 in)
5.318 mm (0.2094 in)
EX
5.44 mm (0.214 in)
5.275 mm (0.2077 in)
Standard
Service limit
5.50 mm (0.217 in)
5.572 mm (0.2194 in)
Standard
Service limit
0.70 mm (0.028 in)
1.8 mm (0.07 in)
VALVE FACE
VALVE SEAT
TOO LOW
VALVE SEAT
TOO HIGH
Summary of Contents for HRR216PKA
Page 5: ...iv HRR216PKA NOTES...
Page 9: ...SPECIFICATIONS HRR216PKA 1 4 NOTES...
Page 45: ...MUFFLER HRR216PKA 5 2 NOTES...
Page 49: ...RECOIL STARTER HRR216PKA 6 4 NOTES...