Questions on Recently Purchased CRF70

[JaxFLCRF70]

I recently purchased a used 04 CRF70. I am having a problem with the idle. When the bike is completely warm up and I close the choke, the engine idles really low then eventually stalls. How do I go about fixing this problem?



Also the bike smokes a good amount, a bluish/white smoke. Is this common for these bikes? I am guessing the engine is going to need a rebuild. Anybody know a good rebuild kit or maybe a stroker kit, that comes with the head,piston,crankshaft, maybe a race camshaft, carburetor?



Thanks

[PlanetMinis.com]

[Korbenw7p3c]

...the first thing that I would do is adjust the valves. Secondly, the carb might need to be cleaned. Afterwords, when reassembling the carb, set the air/fuel screw 1.5 turns out from LIGHT seated position. This is a good starting point for the screw adjustment. Adjust the idle from there after you've ridden it for at least 15 minutes. You should be set.

If it continues to smoke after these adjustments, then it's time for a rebuild.

[PTECH]

I'm trying to get my new 04 70f running better. I notice there are two adjustment screws on the side of the carb. One has a phillips and one has a flathead. The one with the flathead is angled down and the phillips goes straight. It seems like the one with the phillips is an idle speed adjuster. The other one is the fuel screw?

[Lukemx151]

^^^

i had that same idle problem with my 70 but all you have to do is adjust that phillips screw and it seemed to work fine