Rod Bearing Selection - Honda EP3 Service Manual

8 .
9 .
lf the plastigage measures too wide or too narrow,
remove the upper half of the bearing, install a new,
complete bearing with the same color code(s), and
recheck the clearance. Do not file. shim, or scrape
the bearings or the caps to adjust clearance.
lf the plastigage shows the clearance is still
incorrect, try the next larger or smaller bearing (the
color listed above or below that one), and check
clearance agaln. lf the proper clearance cannot be
obtained by using the appropriate larger or smaller
bearing, replace the crankshaft and stan over.
Rod Bearing Selection
1. Inspect each connecting rod for cracks and heat
d a m a g e .
Connecting Rod Big End Eore Code Locations
2 . E a c h r o d h a s a t o l e r a n c e r a n g e f r o m 0 0 . 0 2 4 m m
(0.0009 in.), in 0.006 mm (0.0002 in.) increments,
depending on the size of its big end bore. lt's then
s t a m p e d w i t h a n u m b e r o r b a r ( 1 , 2 , 3 o r 4 / 1 , l l , l l l , o l
l l l l ) i n d i c a t i n g t h e r a n g e . Y o u m a y f i n d a n y
c o m b i n a t i o n o f n u m b e r s a n d b a r s i n a n y e n g i n e .
( H a l f t h e n u m b e r o r b a r i s s t a m p e d o n t h e b e a r i n g
cap, the other half on the rod.)
lf you can't read the code because of an
accumulation of oil and varnish. do not scrub it
with a wire brush or scraper. Clean it only with
solvent or detergent.
Normal Bore Size: 48.0 mm 11.89 in.l
( c o n t ' d )
7-9