AD Boivin 2002 Snow Hawk, Service Manual

Page: 151 / 173

DIMENSIONS AND TOLERANCES 15 - 1
ENGINE
Engine type Rotax 503
Bore mm 72.00
(in) (2.835)
Stroke mm 61.00
(in) (2.402)
Displacement cm
3
496.70
(in
3
) (30.31)
Compression Ratio 6.20
Max RPM Range 7000-7200
Piston ring type (1
st
, 2
nd
) ST/R
Piston ring opening (new) mm 0.2
(in) (0.008)
(wear limit) mm 1.00
(in) (0.039)
Piston ring/groove play (new) mm 0.04
(in) (0.0016)
(wear limit) mm 0.2
(in) (0.008)
Piston/Cylinder play (new) mm 0.08
(in) (0.031)
(wear limit) mm 0.2
(in) (0.008)
Maximum connecting rod axial play (new) mm 0.2
(in) (0.008)
(wear limit) mm 1.00
(in) (0.039)
Maximum crankshaft axial play mm 0.3
(in) (0.018)
Maximum crankshaft curvature mm 0.08
(in) (0.031)
ELECTRICAL
Magneto output W 240
Ignition type CDI
Spark plug type NGK BR9ES
Spark plug gap mm 0.45
(in) (0.018)
Ignition timing before TDC mm 1.66
(in) (0.065)
Primary lgnition coil
W
230 - 330
Lighting coil
W
0.23 - 0.28
Secondary Ignition coil
W
5.1 - 6.3
Head lamp bulb W 30/30
Tail lamp bulb W 18/23
Fuse A 25
DIMENSIONS AND TOLERANCES
15