Rotax-Bombardier Rotary Valve Engine
Technical Specifications 

 

Engine Type
124 174 240 244ss 244 281
Displacement
123,7 173,6 233,39 247 248,23 276,58
Bore
54 62 72 74 72 76
Stroke
54 57,5 57,5 57,5 61 61
Power            
Rotary Disc Timing Motocross 140<>137, Enduro/Off-road 85<>75
Transmission 5 or 6 speed gearbox

 

Carburetor Bing V84, Dellorto PHBE, Mikuni VM34
Ignition Bosch 2pole CDI, Bosch 6Pole CDI 60W, Motoplat 6V
             
             

Most engine specs are available in an Excel-sheet from "Registro Storico SWM"

http://www.swm-moto.org/schede_tecniche_swm.xls

 

SWM Manual (air-cooled)

 

Aprilia Manual (liquid-cooled)
 

other parts-list can be found here:

http://www.rotaxsales.be/osc2nuke/modules.php?name=Downloads&d_op=viewdownload&cid=1

http://amicale-portal.fr/doc._manuels_tech/manuels-tech..html

 

Rotax 256 Tandem-twin Manuals
can be downloaded here:

http://alspeed.surfthe.net.au/Rotax/index.htm