Main Jet Upgrade did not work at all

[rks]

Originally Posted by Mäwby

Thanks for the replies guys. I was trying the larger jets, which is probably why it was bogging down. I'm still learning, so forgive me. I had the mentality that larger jet means more fuel, more power. But it looks like the 105 range is where I belong.

A good indicator of how lean/rich your fuel mixture is, as wheelbender6 said, is the spark plug. You're looking for a tan color around the center electrode. White is too lean, black is too rich. This was my plug at 4,500 miles, back in Aug of 2014.....put it back in and ran it to 12,000 miles. Replaced with a new one late this spring.