I'm posting this for a buddy-
Anyone know what the stock jetting is on a '89 Warrior? What should one with a DG headpipe/silencer (no spark arrester) and UNI filter be jetted?
Thanks
Greg Coats
'87 LT250R
'00 Rancher ES 2X4

 

For the past several years, the main is, & has been 145. He could try a 150 & if a little fat go to a 147. It depends somewhat on his elev. Be advised that Yamaha uses two different style main jets.. a small hex head and a large slotted head so he should pull it to see which he has