Chainsaw Repair

Retuned for next try. Noticed it had picked up rpm's before last test session with switch. The 490 500 dont like higher rpm's the way 501 4910 can compared to those.


Just trying the $30 set up for fun on my 490.
Might try on one of my higher revving 501’s later.
I ended up fattening it up a 1/4 turn on H side to bring it down some.
10.75 Down, 11 across. Was 1/4"+ down cut shorter then test day before.

But did get both on video.


Joe's dyno run to show what I am talking about.