Posted March 26, 2001 - 11:51 AM
Would anyone have any idea of what needs to be done or have any pics of their experiences with this situation!
Your responce would be greatly appreciated
Posted March 26, 2001 - 04:50 PM
Put the pipe on, warm it up, ride around some and pull the plug. You may have to richen it up, but you can also look at the current post "To the honorable Dr.J etc, etc.
There is some excellent baseline jetting info there.
97 KDX220, 86 TTR225, 99 WR400f, WR timing, throttle stop trimmed, air box lid removed, White Bros head pipe, silencer and air filter. De-octopussed. Works frame guards and Thumper Rad Guards, Scotts steering damper. Odometer and headlight removed. Moose hand and mud guards. YZ stock tank, IMS seat and number plate. Renthal Jimmy Button "highs" and Renthal Soft half waffle grips. AMA, SETRA, Happy Ramblers MXC.
Posted March 26, 2001 - 11:27 PM
Next, the main jet. the Hex shaped brass piece right under that 17mm cover at the bottom of the carb. Loosen the carb, tilt and undo the cover. I'm not telling you to change it, but here it is. Under that same cover and towards the front is the pilot jet.
Under the top cover and a holding bolt, is the needle It's a bitch to get to without t-handle allen screws.
For now, just play with the pilot screw for your next few rides. If it starts to backfire, pop, surge, etc, you'll need to make further adjustments.
Posted March 27, 2001 - 04:19 AM
If you follow the instructions in the manual, fitting the Main Jet really isn't that difficult.
Take time to read a few more of these posts. Some of these guys have forgotten more about carbs than I'll ever know, but I ended up with these settings from info on this site. There is also some jetting info on fmfracing.com.
'00 WR400F, YZ Timing, FMF Power Core IV2
[This message has been edited by David W (edited 03-27-2001).]