Originally Posted by
Dave Wilshere
The o ring is fine; it’s the motor or connections that need sorting. It’s just running slowly
Are these the older brushed starters, a fellow pilot has a 12-year 140, which he had to replace the starter, it won't fully spin up to speed either, no start.
Forget the Jet service in the US, but he sold a bunch of these starter motors at a great price.
They are from an outsourced company that sells these little motors and probably sells new brushless motors to all the turbine companies.
Just a guess here, but probably worth talking to a service person from JetCat.