Maintenance & Technical > KX500 Original

Gas Guzzler

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gowen:
You would be suprised, if you have your jetting spot on, you will easily double your fuel. My KX500 on a stock tank would outlast my KX250 anyday by far. Both were spot on jetting.

c-152:
THanks for the tips guys, I think my jetting is pretty good based on my plug and how it runs but I will keep an eye on it.

KXcam22:
I agree with Gowen,
My 500 can outlast any stock-tanked 250 MXer.  Jetting is the key.  It is also possible that a good portion of your gas is dripping out the carb overflow while your ride. I had that problem so now I run my float level slightly low.  At slow speed in trails your bike bounces and angles, all of which cause the float bowl to overfill and then spill out the overflow. Cam.

c-152:
I will try the float bowl thing - thanks for the tip.  I can se what you mean about bouncing aroun on a rock hill off the gas might cause fuel to leak.  If course I also have the issue of my bike laying upsidedown on a hill that 125 frequently go up that also causes gas to leak however I think the fix to that problem will be a little harder 8-)

The Flyin Hawaiian:
Back in 89, Team Green fitted 89 KDX 200 fuel tanks to their 89 ISDE KX 250s. They were able to use the KDX rad shrouds and it looked factory installed. The tank holds about 3 gallons and isnt as bulbouse as the Clarke or IMS tanks. Since the 88-89 KX 250s shared the same basic frame and body work as the 88-04 500, I would think that it may work on the 500 also. Im just not sure of any clearance issues between the pipe and the cylinder. The KDX tanks that could possibly be used would be the 89-94 models. The first water cooled KDXs. I would get about 50 miles out of my 88 K5 with the stock tank. Just enough to make the gas stops at the enduros.

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