More info
Flywheel pn SU00A fits models built 7/2001 and later. Flywheel pn SU22A fits models built up through 6/2001.
Torque specifications (in pounds) for each stage
Stage 1 : 340 lbs
Stage 2 : 400 lbs
Stage 2+ : 440 lbs
Stage 3 : 485 lbs
Stage 3+ : 540 lbs
Stage 4 : 485 lbs
Stage 5 : 640 lbs