Maintenance & Technical > KX500 Original

Should I jet (or re-jet) a new KX500?

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mikesmith:
Run it rich (stock jetting) untill its broke in ,then rejet and change the plug.I run Maxima super-m at 40:1,but Id even run 32:1 at break in.Keep an eye on loose bolts (locktight),clean air filter,I run a magnetic drain plug,I regrease EVERYTHING,fuel filters a good idea.Have fun!

KXcam22:
SLo-mo,
  Glad you took the time to take it apart.  I found out that Kaw doesn't use much grease when the rust started coming out. Yikes.  I like running them lean but 50:1 is a good mix.  The old MC-1 bottles used to have an 85:1 chart on the back (was the recommended mix).  I talked to them about it once and they switched to 50:1 on the bottle because it was more acceptable to the public.  Mike is right about the loctite. As a rule of thumb I locktite everything with steel threads and use anti-seize on everything with aluminum threads. I have yet to lose a part. Cam.

mikesmith:
Silicone the air box and all wire connections.I also use dialetic grease on all wire connections,seal the mag cover and remove it once in a while and give it a shot of WD.Cams got the idea with anti/never-seize,it makes working on the bike so much easier and stops the rust.Change the tranny oil dur
ring break in and be careful with the drain plug,strips easy.Thats why a magnetic plug is a good idea,catches the metal particles and can be safety wired on,I could go on and on,but this gets you on a good start.

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