Section 04
ENGINE
Subsection 06
(BOTTOM END)
04-06-14
SMR2002-025_04_06A.FM
Finish the cleaning with acetone.
CAUTION:
Ensure to clean compressor lubrica-
tion nipple.
CAUTION:
Be careful not to spray cleaner on
the painted surface of the engine.
CAUTION:
Never use a sharp object to scrape
away old sealant as score marks incurred are
detrimental to crankcase sealing.
INSPECTION
Assembled Engine
The following checks can be performed with en-
gine in watercraft without overhauling engine.
Crankshaft Alignment at Center Main
Journal
Since it is an assembled crankshaft it can become
misaligned or deflected. Crankshaft can be twist-
ed on center main journal, changing timing of one
cylinder in relation with the other.
1. Main journal alignment here
To accurately check if crankshaft is twisted on cen-
ter main journal, proceed as follows:
– Remove magneto housing cover.
– Remove flywheel nut (and magneto rotor for
the
787 RFI and 947 engines
). Refer to MAG-
NETO SYSTEM for procedures.
– Install Bombardier degree wheel (P/N 529 035
607) on crankshaft end. Hand-tighten nut only.
– Remove both spark plugs.
– Install a TDC gauge 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
°
.
TYPICAL
1. TDC gauge
2. Degree wheel
3. Hand tighten nut
4. Needle pointer
– Remove TDC gauge and install on
PTO side
.
– Bring
PTO
piston at Top Dead Center.
Interval between cylinders must be exactly 180
°
therefore, needle pointer must indicate 180
°
on
degree wheel (360
°
-
180
°
=
180
°
).
Any other reading indicates a misaligned crank-
shaft.
F01D1NA
1
1
F01D4IA
3
2
4
www.SeaDooManuals.net
Summary of Contents for GTI 5558
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Page 542: ...SMR2002 051_16_00A FM 2002 GTI MODEL F17Z01 www SeaDooManuals net ...
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Page 553: ...2002 RX DI MODEL www SeaDooManuals net ...
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