Niagara Air Parts' specialty is the repair and overhaul of TCM starter adapter drives. Our parent company (CAM) actually manufactures many of the parts used in theses drives. Visit our web site.
www.niagaraairparts.com
Following is some good info. (1) adapter clutch springs are available in std., M15, M28 and M43 with full installation instructions. This could save you a $1500.00 starter shaft.(2) DO NOT instal the new TCM "Iskra" or Sky-Tec lightweight geared (4 to 1) starters as they won't turn backwards to allow the clutch spring to disengage, destroying a $1500.00 main gear shaft on the first start, at worst and at best,in a 100 hours or so.(3) CAM O/H parts kits contain all the seals and bearings and clips and parts for O/H of the adapter, available when you buy a spring.(4) NAP can give you 2 day service on your adapter to get you up and going, no extra charge. (5) We want to buy starter adapter cores for these Skymasters so we can offer instant exchanges. If you have any, give us a call at 800-565-4268 (overseas 705-326-1368) Ron Newburg