Cleaning Spark Plug Holes?

[veedubtek]

Optimoly is some of the best stuff on the market. Nothing better for brakes, guide pins, input shafts, etc...

Hard for me to comment on the MR1's as I haven't owned one. But, I can't imagine annual changes aren't more than sufficient to prevent it. With quality plugs of course. A metallurgy expert likely has better insight than I, but I've not had/seen/heard of a problem with a nickel plated plug in an aluminum head (if replaced in the prescribed amount of time)

Kinda leads back on topic here really. Once it's used, theres always gonna be a gooey substance near the threads around the plug to attract dirt particles and the like. Which will likely be caught fumbling the plug back in the hole. Which will aid in damaging threads, which further leads to that plug breaking off coming back out year(s) down the line.

 

[ncnmra]

Universally I've read about using anti seize on these engines. I agree that the potential for crud is larger then and likely explains my current predicament, but I'd rather some crud than a seized plug. The PWC forums seem to agree with anti-seize in these engines and one guy mentioned that Yamaha's torque spec is when using anti seize. BUT; I don't recall if that's in the service manual (don't have it in front of me).