Crankshaft - SeaDoo Rotax 1503 4-Tec 2005 Engine Shop Manual

Ring End Gap
RING END GAP mm (in)
NEW MINIMUM
RECTANGULAR
TAPER-FACE
OIL SCRAPER RING
NEW MAXIMUM
RECTANGULAR
TAPER-FACE
OIL SCRAPER RING
SERVICE LIMIT
ALL
Measure position for ring end gap in the area of 8
to 16 mm (.315 to.630 in) from top of cylinder.
NOTE: In order to correctly position the ring in the
cylinder, use piston as a pusher.
Using a feeler gauge, check ring end gap. Replace
ring if gap exceeds above described specified tol-
erance.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
Install the oil scraper ring first, then the taper-face
ring with the word "TO" facing up, then the rect-
angular ring with the word "T" facing up.
1. Rectangular ring
2. Taper-face ring
3. Oil scraper ring
CAUTION: Ensure that top and second rings are
not interchanged
SMR2005-037
NOTE: Use a ring expander to prevent breakage
during installation. The oil ring must be installed
by hand.
Check that rings rotate smoothly after installation.
Space the piston ring end gaps 120° apart and do
not align the gaps with the piston pin bore or the
0.35 (.014)
thrust side axis.
0.50 (.020)
1 (.04)
A31C2OA
1. DO NOT align ring gap with piston trust side axis
2. DO NOT align ring gap with piston pin bore axis
A. 120°

CRANKSHAFT

Crankshaft Locking
Remove:
– intake manifold (refer to INTAKE MANIFOLD
– fuel rail cover
– spark plugs
– plug screw.
www.SeaDooManuals.net
Section 01 ENGINES (1503 4-TEC)
Subsection 07 (CYLINDER BLOCK)
A
AND SUPERCHARGER section)
A
A
1
2
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