swamprat & coop,How does this spark plug look? to me it looks like I'm running rich.
You got it! Except you do 1 test at 1/4 throttle, 1 at 1/2 throttle and 1 between 3/4-full throttle. Check plug after each run.I think a throttle chop test is when you install a new sparkplug then immediately take the bike out for a wide-open-throttle run through all gears,then before letting up on the throttle you shut the engine off,coast to a stop and remove the plug for inspection.