1. Check the piston for distortion or cracks.
NOTE: If cylinder is bored, an oversized piston
must be used.
2. Measure piston diameter at a point 17 mm (0.67 in)
from the bottom of the skirt.
NOTE: There are two standard-size pistons (A =
no letter and B). The letter is stamped on the top of
the piston. These letters are also stamped on the
block as cylinder bore sizes.
3. Calculate the difference between cylinder bore diam-
eter on page 7-12 and piston diameter.
Standard (New): 0.006—0.034 mm
Service Limit: 0.0825 mm (0.0032 in)
0.0825 mm (0.0032 in)
Oversize Piston Diameter
0.25: 90.226-90.244 mm (3.5522-3.5530 in)
0.50: 90.476-90.494 mm (3.5620-3.5627 in)