Section 04
ENGINE
Subsection 05
(TOP END)
04-05-12
LMR2000_053_04_05A.FM
The inspection of engine top end should include
the following measurements.
N.A.: Not Applicable
NOTE:
Replacement cylinder sleeves are avail-
able if necessary. Also, oversize pistons of 0.25 mm
(.010 in) are available for this engine.
Ring/Piston Groove Clearance
Due to the semi-trapez rings, it is not possible to
accurately measure ring/piston groove clearance.
Ring End Gap
Position ring halfway between exhaust port and
top of cylinder.
NOTE:
In order to correctly position ring in cylin-
der, use piston as a pusher.
Using a feeler gauge, check ring end gap. If gap
exceeds specified tolerance, rings should be re-
placed.
1. Top of cylinder
2. Ring end gap
Cylinder Base Gasket
Different thicknesses of cylinder base gaskets are
used for a precise adjustment of the combustion
chamber volume.
To identify gasket thickness, refer to the identifi-
cation holes on the gasket.
TYPICAL
1. Identification holes
RAVE Valve
Check RAVE valve bellows
no. 10
for cracks.
ASSEMBLY
Assembly is essentially the reverse of disassem-
bly procedures. However pay particular attention
to the following.
947 ENGINE
MEASUREMENT
TOLERANCES
NEW PARTS
WEAR
LIMIT
(min.)
(max.)
Cylinder taper
N.A.
0.05 mm
(.002 in)
0.1 mm
(.004 in)
Cylinder out
of round
N.A.
0.008 mm
(.0003 in)
0.08 mm
(.003 in)
Piston/cylinder
wall clearance
0.09 mm
(.0035 in)
N.A.
0.20 mm
(.008 in)
Ring/piston groove
clearance
0.03 mm
(.001 in)
0.07 mm
(.003 in)
0.20 mm
(.008 in)
Ring end gap
0.40 mm
(.016 in)
0.55 mm
(.022 in)
1.0 mm
(.039 in)
F01D0OA
1
2
GASKET
THICKNESS
IDENTIFICATION
HOLES
0.3 mm (.012 in)
3
0.4 mm (.016 in)
4
0.5 mm (.020 in)
5
0.6 mm (.024 in)
6
0.8 mm (.031 in)
8
F01D67A
1
Содержание Sea-Doo SPORTSTER LE
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Страница 2: ...Shop Manual Supplement SPORTSTER LE Use in conjunction with Shop Manual Volume 1 P N 219 100 097...
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