As much as I hate to say it, you will most likely need to take it to the shop.
By all means pull the starter off and clean it out as sawdust can accumulate in there and clog things up.
If that does not do the job then it is shop time.
AS you get older you skin gets a lot thinner so the spring unwinding that 10 years ago just stung, now days can leave you with deep and dangerous cuts.
If you do take it in for repairs, take the whole saw, not just the pull start as the tech can not test it properly without the saw on the other end.