Yamaha Grizzly Forum banner

Main Jet Size

6269 Views 4 Replies 3 Participants Last post by  dknarnd
What size main jet works best below 3000 ft? Mine had a 153.8 stock, I put the 155 in that came with the dyno-jet kit. Seems too rich now, no power! Might try the 150. Anyone have advice? Thanks
1 - 5 of 5 Posts
Why you changing the jet? Have you done other modifications? Have you done plug check?
Trying for more power! Only other mod is tip on muffler.
Does anyone know what the stock jet size on the grizzly is?
153.8 Mikuni small round
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.