Section 13
TECHNICAL DATA
Sub-Section 04
(HX MODEL)
13-04-1
HX MODEL
4
ENGINE
HX (5881)
Engine type
Bombardier-Rotax 717
Induction type
Rotary valve
Exhaust system
Type
Water cooled, water injected
Water injection fitting (head)
3.5 mm
(.139 in)
Water injection fitting (cone)
3.5 mm
(.139 in)
Starting system
Electric start
Lubrication
Fuel / oil mixture
VROI (Variable Rate Oil Injection)
Oil injection pump
Gear driven
Oil type
BOMBARDIER-ROTAX injection oil
Number of cylinders
2
Bore
Standard
82.00 mm
(3.228 in)
First oversize
82.25 mm
(3.238 in)
Second oversize
82.50 mm
(3.248 in)
Stroke
68 mm
(2.68 in)
Displacement
718 cm³
(43.81 in³)
Corrected compression ratio
6.2 : 1
Cylinder head warpage (maximum)
0.05 mm
(.002 in)
Piston ring type and quantity
1 Semi-trapez - 1 Rectangular
Ring end gap
New
0.25 - 0.40 mm
(.010 - .016 in)
Wear limit
1.00 mm
(.039 in)
Ring / piston groove
clearance
New
0.025 - 0.070 mm
(.001 - .003 in)
Wear limit
0.2 mm
(.008 in)
Piston / cylinder wall
New
0.060 - 0.108 mm
(.0024 - .0043 in)
clearance
Wear limit
0.2 mm
(.008 in)
Cylinder taper (maximum)
0.100 mm
(.004 in)
Cylinder out of round (maximum)
0.080 mm
(.003 in)
Connecting rod bigend axial
play
New
0.39 - 0.74 mm
(.015 - .029 in)
Wear limit
1.2 mm
(.047 in)
Crankshaft deflection
➀
Rotary valve timing
Opening
147ø ñ 5 BTDC
Closing
65.5ø ñ 5 ATDC
Rotary valve duration
159ø
Crankcase / rotary valve gap
0.25 - 0.35 mm
(.010 - .014 in)
Connecting rod / crankshaft
New
0.01 - 0.02 mm
(.0004 - .0008 in)
pin radial clearance
Wear limit
0.050 mm
(.002 in)
Connecting rod / piston
New
0.003 - 0.012 mm
(.00012 - .00047 in)
pin radial clearance
Wear limit
0.015 mm
(.00059 in)
ADDITIONAL INFORMATION : Squish gap : 1.3 - 1.7 mm (.051 - .067 in)
➀
MAG side : 0.05 mm (.002 in)
PTO side : 0.03 mm (.001 in)
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