Section 03 ENGINE
Sub-Section 06 (BOTTOM END)
03-06-7
1. Index mark
Use a press to remove the gear
no. 18
from the
counterbalance shaft.
CLEANING
Discard all oil seals, gaskets, O-rings and sealing
rings.
Clean oil passages and make sure they are not
clogged.
Clean all metal components in a solvent.
Remove old Loctite from crankcase mating sur-
faces with gasket remover (P/N 295 000 110).
INSPECTION
Visually inspect parts for corrosion damage.
Inspect plane surfaces for warpage. Small defor-
mation can be corrected by grinding surface with
a fine sand paper. Install sand paper on a surface
plate and rub part against oiled sand paper.
Inspect crankshaft bearings. Check for scoring,
pitting, chipping or other evidence of wear. Make
sure plastic cage is not melted. Rotate and make
sure they turn smoothly.
If crankshaft and/or components are found defec-
tive, it must be repaired by a specialized shop or
replaced.
The inspection of engine bottom end should in-
clude the following measurements:
Connecting Rod Straightness
Align a steel ruler on edge of small end connect-
ing rod bore. Check if ruler is perfectly aligned
with edge of big end.
1. Ruler must be aligned with edge of connecting rod here
2. Align ruler here
-
CAUTION
Be careful not to spray cleaner on the paint-
ed surface of the engine. Never use a sharp
object to scrape away old sealant as score
marks incurred are detrimental to crankcase
sealing.
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F00D0TA
MEASUREMENT
NEW PARTS
WEAR
LIMIT
(min.) (max.)
Connecting rod
big end axial play
0.390 mm
(.015 in)
.737 mm
(.029 in)
1.2 mm
(.047 in)
MEASUREMENT MAG SIDE PTO SIDE
Crankshaft
deflection (max.)
0.050 mm
(.002 in)
0.030 mm
(.001 in)
F01D1QA
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