Help With Cam Mod On Yfz450??!!??!!??!!??

[raptor_02]

I just did the cam mod and put a 13/1 compression piston in at the same time. Man this thing is like a ROCKET but it is a beyatch to start. I knew before doing this that the cam mod caused it to have trouble starting but i have to crank mine forever with the choke on while its hot. Any suggestions on how to fix this problem would be greatly apprectiated.

[BigAl]

I'd say your jetted too lean.

go to www.yfzcentral.com and look for daddogrider's posts about jetting.

[AlaskaSpeed]

Cam mod doesn't make them hard to start as long as you are jetted right. I am at about sea level and with a 45 or 48 pilot, air screw 1.5 turns out; mine starts up without choke every time. JIM