Hi.......I have a 041 Stihl. The rubber handle grip rotted and tore. I used good electrical tape, but it didn't last long. Got tired of re-tapping it. Dealer said that they could order the rubber grip, or a whole new handle.
I took the handle off, masked the ends where it bolted on, and took it to a Rain-x truck bed liner dealer. He sprayed a heavy coat on it while he was doing a customers truck. Looks and works good. $10.00.
I used Rain-x cause theirs goes on hot, and he was local.
I have Rhino on my truck, it would probably work too.
George