Section 04 ENGINE (2-STROKE)
Subsection 05 (BOTTOM END)
NOTE: Crankshaft deflection cannot be correctly
measured between centers of a lathe.
Connecting Rod Big End Axial Play
CONNECTING ROD BIG END AXIAL PLAY
MODEL
NEW PARTS
(min.) (max.)
WEAR
LIMIT
717
engines
0.311 mm
(.012 in)
0.677 mm
(.026 in)
1.2 mm
(.047 in)
787 RFI
engines
0.230 mm
(.008 in)
0.617 mm
(.024 in)
1.2 mm
(.047 in)
947 DI
engines
0.390 mm
(.015 in)
0.737 mm
(.029 in)
1.2 mm
(.047 in)
Using a feeler gauge, measure distance between
thrust washer and crankshaft counterweight.
F01D1WA
1
2
1. Measuring big end axial play
2. Feeler gauge
Starter Drive Bearing
947 DI Engines Only
Check bearing no. 23 of starter drive assembly
no. 27 in crankcase.
F06D1IA
1
1. Bearing of starter drive assembly
Removal
Starter drive bearing can be easily removed from
lower crankcase half using the following suggest-
ed tool or equivalent:
– Snap-onhammerpullerincluding:
– handle CJ93-1
– hammer CJ125-6
– claws CJ93-4.
F01J0ZA
Closepullerclawssothattheycanbeinsertedin
end bearing. Holding claws, turn puller shaft clock
wise so that claws open and become firmly tight
against bearing.
Slide puller hammer outwards and tap puller end.
Retighten claws as necessary to always maintain
them tight against bearing. Continue this way un-
til bearing completely comes out.
For installation, see below in this section.
Reed Valve
947 DI Engines Only
Check reed valve petals no. 29 for cracks or other
defects. The reed petals must lie completely flat
against the reed valve body no. 30. To check, hold
against light.
smr2004-Complete Line Up 143
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