strangeling wrote on 12/31/69 at 16:00:04:Thanks,
I have a 07 s40 with a Jardine and the dealer said it didn't need to be rejetted but I have a lot of backfiing on deceleration so I just changed it to a 147.5 from the stock 145 but think maybe I should have gone to a 150. I don't know.
Dealers don't want to help with rejetting on carburetor bikes. I'm not surprised.
My spouse has a 152.5 with her Trapp and 14 disks.
I was trying a 157.5 with my Raask, but I just changed it back to a 155 because of the soot in the pipe and on the brake actuator arm....not sure what I'll need when I get the head back on though