Lawdog

That indeed looks to be the manual I'm looking for. I'll have to keep an eye out. Thanks for the dealer info too. I might have to swing in to them next time I'm in the area.

Almost a year old now this post. Wondering if I can revive the question if anyone has it knows where I can get my hands on a Sumo Service Manual. Just purchased a 1992 Sumo, Japanese inmost to the UK, and while it runs alright it could use a good tuned some TLC as I begin working on it. Any suggestions on manuals and parts supplier would be appreciated.