Removing the CNW Front Gear Sprag Drive Sprocket
Download the complete PDF version using the green download button at the top right of this page for a detailed Colorado Norton Works technical guide covering removal and reinstallation of the CNW front gear sprocket and sprag clutch drive assembly. This workshop reference explains how to remove the outer primary components, alternator stator, outrigger plate, rotor, drive gear, sprag bearing and related sprocket components while protecting the transfer gear, bearing, crankshaft key and starter drive parts during service.
The guide separates the work into two possible service paths: partial removal for replacing the sprag clutch or bearing, and deeper removal where the front drive sprocket, clutch basket and belt drive must come off together to access the crank seal or inner primary. It also explains the importance of noting the sprag bearing orientation, using the correct puller arrangement and avoiding damage to the bearing seal and sprocket assembly.
Reinstallation information includes fitting the drive gear and sprag back onto the front sprocket, checking that the circlip groove is exposed, confirming correct one-way operation, reinstalling the rotor with the crankshaft key, torquing the rotor nut correctly and checking stator-to-rotor clearance. The final section explains the required transfer gear detent adjustment so the gear stops once the engine is running, which is critical to prevent starter drive damage.
Contents Include
- CNW front gear sprocket and sprag clutch removal
- Outer primary cover and footrest assembly removal
- Alternator stator, rotor and outrigger plate notes
- Transfer gear bearing handling precautions
- Circlip removal and drive gear puller guidance
- Partial sprag clutch and bearing replacement path
- Front drive sprocket, clutch basket and belt removal path
- Sprag bearing orientation and installation warning
- Rotor nut torque and blue thread locker recommendation
- Stator-to-rotor clearance check
- Starter system test procedure
- Transfer gear detent adjustment and locknut securing
