1994 Quicksilver MLX Sport s/n SPORT 205
Rotax 447 s/n 3910912
Bing 54 carburetor  

Item Part # Additional Description
Rotax fan belt Rotax Part # 980-436 V-Belt 10x6x590
  Fan holder tool needed Rotax Part # 876-357
Air filter K&N RC1200 or SP2704 Conical fiber pleated filter for Bing 54 carburetor (36mm)
Spark plugs NGK B8ES solid top (gapped to 0.018")
NGK BR8ES (resistor plugs)

Pep Boys 5422 $1.49 each

BR8ES :

B= 14mm
R= Resistor
8 = heat range (2=hot, 11=cold)
ES=standard 3/4" thread reach (2.5mm) center electrode
 

Rotax 447 [pdf file]

447ul1.jpg (138471 bytes)

DESCRIPTION: Two-cycle, two-cylinder engine, oil in fuel lubrication
BORE: 67.5 mm (2.657 in.)
STROKE: 61 mm (2.40 in.)
DISPLACEMENT: 436.5 cc (26.635 cu. in.)
COMPRESSION RATIO: Theoretical 9.6, effective 6.3
POWER OUTPUT: 29.5 kw (40 HP) at 6000 rpm
TORQUE MAX.: 44.0 NM (32.5 ft. lbs.) at 6000 rpm
MAXIMUM RPM: 7000 RPM
DIRECTION OF ROTATION: Counter-clockwise, viewed towards PTO
CYLINDER: 2 light alloy cylinders w/ cast iron sleeves
PISTON: Aluminum cast piston with 2 rings
PISTON/CYLINDER CLEARANCE: 0.08- 0.09mm (.00315-.00354 in.)
IGNITION SYSTEM: Breakerless Ducati capacitor discharge ignition with magneto generator.
GENERATOR OUTPUT: AC 12V 110W + 30W
RECTIFIER-REGULATOR: 
(optional)
a.) #9103 requires minimum load 12 W (1 amp.)
b.) #9251 requires no minimum load
IGNITION TIMING: 2.09 mm = .086" BTDC
CONTACT POINT GAP: 0.4 mm = .015"
SPARK PLUG: 12mm NGK B8ES
ELECTRODE GAP: .015" GAP
CARBURETOR: 1 X BING 36mm, with hand lever choke
FUEL PUMP: pneumatic fuel pump #6903
FUEL: Regular gasoline, octane not below 90 unleaded
LUBRICATION OF ENGINE: Super two stroke oil (AV-2)
MIXING RATIO: 50 TO 1 (2%)
STARTER: Rewind starter
optional: electric mag side without recoil option
REDUCTION GEARBOX "B": Reduction gear-box with Torsional shock absorber
RATIOS: 2.00 to 1, 2.238 to 1, 2.58 to 1
DIRECTION OF PROP ROTATION: Clockwise, viewed toward prop flange
COOLING: Air cooled by axial fan
WEIGHTS: Engine without carburetor, intake silencer, fuel pump
Exhaust System...................... 
Carb With Rubber Socket......... 2.0 lbs.......( 0.9 kg.)
Exhaust System (approx.)......... 10.8 lbs.......( 4.9 kg.)
Electric Start Kit (Optional)..... 7.70 lbs.......( 3.5 kg.)
Reduction Box "B" - Dry.............9.9 lbs.......(4.5 kg.)