Section 04
ENGINE
Sub-Section 04
(BOTTOM END)
04-04-3
CRANKSHAFT MISALIGNMENT
AND DEFLECTION
Since it is an assembled crankshaft it can become
misaligned or deflected. Crankshaft can be twist-
ed on center main journal, changing timing of 1
cylinder in relation with the other.
1. Main journal alignment here
Counterweights can also be twisted on connect-
ing rod journal on any or both cylinder(s).
1. Connecting rod journal alignment here
Crankshaft Alignment at Center Main
Journal
NOTE :
The following checks can be per-
formedwith engine in watercraft without
overhauling engine.
To quickly check, without accuracy, if crankshaft is
twisted on center main journal, proceed as fol-
lowsþ:
– Remove PTO flywheel guard.
– Remove spark plugs.
– Insert a screwdriver in one spark plug hole.
– Insert a longer screwdriver in the other hole.
– Lay a forearm over both screwdriver handles to
feel piston displacements.
– With the other hand, slowly rotate engine by
PTO flywheel.
1. Lay 1 hand over screwdrivers to feel movement
2. Screwdrivers in spark plug holes
As soon as one piston starts going up, the other
must immediately go down. Any interval between
strokes indicates a misaligned crankshaft.
Or, to accurately check crankshaft alignment, pro-
ceed as followsþ:
– Remove ignition housing cover.
– Remove MAG flywheel nut. Refer to PTO FLY-
WHEEL AND MAGNETO 04-03 for procedures.
– Install Bombardier degree wheel (P / N 295 000
007) on crankshaft end. Hand-tighten nut only.
– Remove both spark plugs.
– Install a TDC gauge (P / N 295 000 065) in spark
plug hole on
MAG
side.
– Bring
MAG
piston at Top Dead Center.
– As a needle pointer, secure a wire with a cover
screw and a washer.
– Rotate degree wheel (NOT crankshaft) so that
needle pointer reads 360°.
F01D1NA
1
F01D1NB
1
'
F01D1IA
1
2
Содержание Challenger 5896
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Страница 3: ...219 100 044 0 0 0 1996 Shop Manual 0 R ...
Страница 143: ...Section 08 ELECTRICAL Sub Section 01 OVERVIEW 08 01 3 1 Battery 2 Fuse block 3 Accessories F04H0YA 3 1 2 ...
Страница 152: ...Section 08 ELECTRICAL Sub Section 03 IGNITION SYSTEM 08 03 2 ELECTRICAL BOX Sportster F04H11S ...
Страница 154: ...Section 08 ELECTRICAL Sub Section 03 IGNITION SYSTEM 08 03 4 ELECTRICAL BOX Speedster F04H26S ...
Страница 251: ...Section 11 HULL DECK Sub Section 01 COMPONENTS 11 01 5 F04L3IS Loctite 242 ...
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