MerCruiser 305 CID (5.0L) Service Manual page 252

5.0l / 305 cid / 5.7l / 350 cid ENGINES
b. Measure piston diameter at skirt across center line of piston pin as shown.
c. Subtract piston diameter from cylinder bore diameter to determine piston-to-bore
d. Determine if piston-to-bore clearance is in acceptable range shown in "Specifica-
2. If used piston is not satisfactory, determine if a new piston can be selected to fit cylinder
bore within acceptable range.
3. If cylinder bore must be reconditioned, measure new piston diameter (across centerline
of piston pin), then hone cylinder bore to correct clearance (acceptable range).
4. Mark piston to identify cylinder for which it was fitted.
Index
Page 3A-86
clearance.
tions."
SERVICE MANUAL NUMBER 24
72624
90-861327--1 OCTOBER 1999