Hi there. I also sent you a private message.
If there's a chance of getting that service manual pdf it'd be greatly appreciated!
I live in south central alaska...same model 41 has been in use for 20 years. It's starting to smell slightly diesely when first igniting but clears right up. i'm afraid i'm gonna have to dig into it and really like having literature to follow.

Anyways, if you're willing to email that manual, i'm at cosmomer@gmail.com

Thanks! cosmo mercurio, kasilof, alaska