Technical Specifications - SeaDoo Rotax 1503 4-Tec 2005 Engine Shop Manual

TECHNICAL SPECIFICATIONS

ENGINE
Engine type
Number of cylinders
Number of valves
Bore
Stroke
Displacement
Compression ratio
Induction type
Maximum HP RPM
Lubrication
Intake valve opening
Intake valve closing
Exhaust valve opening
Exhaust valve closing
Intake
Valve stem diameter
Exhaust
Valve guide diameter
Inner
Valve spring free length
Outer
Intake
Valve seat contact width
Exhaust
smr2005-038
Section 01 ENGINES (1503 4-TEC)
Subsection 08 (TECHNICAL SPECIFICATIONS)
NATURALLY ASPIRATED
ROTAX 1503 4-TEC, 4-stroke, Single Over Head
12 valves with hydraulic lifters (no adjustment)
Standard
Naturally-aspirated
7300 ± 50 RPM
Dry sump (2 oil pumps). Replaceable paper type oil
Type
10W40 4-stroke oil
(API service classification
Oil type
SL, SJ or SH)
Minimum (new)
Maximum (new)
Wear limit
Minimum (new)
Maximum (new)
Wear limit
Minimum (new)
Maximum (new)
Wear limit
Nominal (new)
Wear limit
Nominal (new)
Wear limit
Nominal (new)
Wear limit
Nominal (new)
Wear limit
www.SeaDooManuals.net
SUPERCHARGED
Camshaft (SOHC), liquid cooled
3
100 mm (3.9 in)
63.4 mm (2.49 in)
1493.8 mm 3 (58.81 in
SC engine: 8.1:1
10.6:1
SC IC engine: 8.4:1
SC engine: gear-driven
SC IC engine: gear-driven
supercharger with air/water
SC engine: 7300 ± 50 RPM
SC IC engine: 8000 ± 50 RPM
filter. Water-cooled oil cooler
XP-S 10W40 or
an approved equivalent
10° BTDC
45° ABDC
50° BBDC
5° ATDC
5.961 mm (.2347 in)
5.975 mm (.2352 in)
5.930 mm (.2330 in)
5.946 mm (.2341 in)
5.960 mm (.2346 in)
5.930 mm (.2330 in)
5.99 mm (.2358 in)
6.01 mm (.2366 in)
6.060 mm (.2386 in)
41.02 mm (1.615 in)
38.8 mm (1.499 in)
45.45 mm (1.789 in)
43 mm (1.693 in)
1.1 to 1.3 mm (.043 to .051 in)
1.6 mm (.063 in)
1.25 to 1.55 mm (.049 to .061 in)
1.8 mm (.071 in)
3 )
supercharger
intercooler
0° ATDC
113