Maintenance & Technical > KX500 Original

Break in?

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SLEEZ:
I was wondering the best way to break in the 500. On my 250, I would do a 5 min warm up and complete cool down. Another warm up with light ride(no wide open rips). Another light ride and that would be it. Never had any problems. The shop I bought the 500 from recommended light riding nothing over 3/4 throttle for two tanks of gas.
I know not to run a synthetic pre mix during break in, I have always used Yamalube during break in(but is a semi syn.) What pre mix are you guys using during break in?

leewinsor:
Yes, What IS the best/proper way to beat in a 500? All the manual says is to "Avoid full throttle starts and rapid acceleration". Any one with any info?
 
Lee W

Sharc:
20 min ride, cool til the cylinder feels cool, 20 min ride, cool again, run it easy for 2 more gallons, then punch it...!!  Easy throttle, not too low, not too high during break in.  Dont short shift, and dont stay at one RPM very log - up and down the RPM range smooth and easy....Dont be timid, just dont make it pull too hard or too high...

I use Golden Spectro at 50:1 - never had a problem in 20 years so I'm afraid to switch...

sdkx500:
Question!...
Why should you not use fully synthetic pre-mix when breaking in a new motor?? I got a '04 that hasn't been broken in yet and I've already bought some Royal Purple TCW 3 pre mix for it.

Fookeneh:
^ not enough friction to break in the rings properly.

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