It sure would be nice to have a labor rate book like motorcycle, atv's, cars and trucks have.
I had labor books, mechanic, and the paint and body that came out monthly seems like. Some things they are fairly accurate, a good tech can beat the book usually 10-20%, some things are miles off and if you quote the book price you can't keep a good tech, they'll take a huge bath every time.
Best advice is to find out what the dealers are charging and recognize you are offering a bit different service. While you certainly have overhead, they have a lot more. They are also likely to be more expert on the mainline saws that they work on. When you work on one line you get very good at knowing what the likely issues are. That isn't saying that independent mechanics can't be good, I was always independent, but it is tough to beat a line mechanic. I listened to a line mechanic friend ordering parts. He ordered parts for a Chevy, a Buick, another car I don't remember, and a Cadillac. I asked, "Damn Earl, how many are you working on at once?" "Just a Caddy, the parts are exactly the same and cheaper in other brands." I did the same thing on my nephew's Infinity a few years back, Nissan motor in the engine compartment, even said so on the valve cover. Infinity distributer, over five hundred, Nissan distributer that was exactly the same, under two hundred!
By the job I'd try to set my prices 15-20% below dealers. Try to work too cheap and first thing you know you are working for free or worse and people will not respect your work. Another story, A man wanted a quote on a network installed in a new building, requiring us to design the network of course. We knew he wanted us to design it then he would lowball the job to someone else. Told him the first visit was free, after that we charged. He volunteered that he would pay fifteen an hour for the first visit, the same thing he paid his college student nephew to work on computers. This was an electrical contractor and we had two system engineers coming in on this free visit including a MasterCNE. I told him he had his options, free or $150 a manhour. He wasn't going to dictate what our work was worth and we damned sure didn't step in a door for fifteen an hour.
Run your business as a business or expect it to fail.
Hu