Honda HRN216 Series Manual page 149

CAMSHAFT/CRANKSHAFT/ PISTON/CYLINDER HRN216
PISTON PIN O.D.
Measure and record the piston pin O.D. at three points (both ends
and middle). Take the minimum reading to determine piston pin
O.D.
STANDARD: 12.994 – 13.000 mm (0.5116 – 0.5118 in)
SERVICE LIMIT: 12.954 mm (0.5100 in)
If the measurement is less than the service limit, replace the piston
pin.
PISTON PIN BORE I.D.
Measure and record the piston pin bore I.D. of the piston.
STANDARD: 13.002 – 13.016 mm (0.5119 – 0.5124 in)
SERVICE LIMIT: 13.048 mm (0.5137 in)
If the measurement is more than the service limit, replace the
piston.
PISTON PIN-TO-PISTON PIN BORE CLEARANCE
Subtract the piston pin O.D. from the piston pin bore I.D. to obtain
the piston pin-to-piston pin bore clearance.
STANDARD: 0.002 – 0.020 mm (0.0001 – 0.0008 in)
SERVICE LIMIT: 0.070 mm (0.0028 in)
If the calculated clearance is more than the service limit, replace
the piston pin and recheck the clearance.
If the clearance is still more than the service limit with the new
piston pin, replace the piston.
CONNECTING ROD SMALL END I.D.
Measure the connecting rod small end I.D.
STANDARD: 13.005 – 13.020 mm (0.5120 – 0.5126 in)
SERVICE LIMIT: 13.07 mm (0.515 in)
If the measurement is more than the service limit, replace the
connecting rod.
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