does the jetting change after a new top-end?

[kawicam125]

hey guys, ive posted a thread on why i keep fouling spark plugs. we jetted my 00' kx125 BEFORE i got my top-end rebuilt. does the jettin after in any way after the top-end is rebuilt? thanx

 

[nick545]

From Spank's Jetting Guide.................



-Before you start to rejet your bike, you need a clean air filter, a fresh plug (actually you need several plugs to do plug-chop tests for the main jet), and fresh fuel. One important detail: Make sure the engine is in good mechanical condition. If your engine has a worn top-end, fix it first. Trying to jet a worn out engine is a waste of time. The same goes for reeds that don't seal properly, and a silencer that needs re-packing. Worn reeds will mimic rich jetting, and worn rings will mimic lean jetting.

 

[kawicam125]

i looked at that, just making sure.