Did a search on here and found a lot of different opinions; so I thought I'd re-ask here.
Got my son his new 06 YZ-85 (moving up from his TT-R125). The bike now has about 2 tanks through it. Its got the stock jetting and BR10EG plug.
We have fouled 3 plugs, 2 after we switched to 32:1 mix. (I expected to foul a couple as it had 15:1 initially for breakin from the dealer for the first tank, but it actually made it through that tank on the 1st plug).
Its not fouling when he starts etc; seems to be after 15-20 minutes he gets the dreaded brrrp -nothing. He is doing quite well now at keeping the rpm's up in the power band.
As the 06 is supposedly un-changed from the 05 does anyone have a typical setup that can get us close?
One suggestion I was given was to run a BR9EG instead of the BR10EG. I also turned the airscrew out 1/2 turn (but again, its not fouling at low RPM or when starting, but after he has ridden it for about 15-20 minutes.)
I was spoiled, my 06 YZ250 hasn't needed any changes and is still on its original plug after about 7-8 hours.
Got my son his new 06 YZ-85 (moving up from his TT-R125). The bike now has about 2 tanks through it. Its got the stock jetting and BR10EG plug.
We have fouled 3 plugs, 2 after we switched to 32:1 mix. (I expected to foul a couple as it had 15:1 initially for breakin from the dealer for the first tank, but it actually made it through that tank on the 1st plug).
Its not fouling when he starts etc; seems to be after 15-20 minutes he gets the dreaded brrrp -nothing. He is doing quite well now at keeping the rpm's up in the power band.
As the 06 is supposedly un-changed from the 05 does anyone have a typical setup that can get us close?
One suggestion I was given was to run a BR9EG instead of the BR10EG. I also turned the airscrew out 1/2 turn (but again, its not fouling at low RPM or when starting, but after he has ridden it for about 15-20 minutes.)
I was spoiled, my 06 YZ250 hasn't needed any changes and is still on its original plug after about 7-8 hours.