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Dirt Bike Brands - Other
yz 125 wont hold idle, and dies after revs!!!
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[QUOTE="rmc_olderthandirt, post: 1166860, member: 68872"] The first step is to decide what oil mix you are going to run. Make your decision and stick with it because changing the oil mix changes the jetting requirements in the carburtor. The next step is to clean the carburetor really well. Many people don't understand what this entails, it is a lot more than taking the float bowl off and wiping the insides out. You need to remove all the jets and soak the carburetor in a really strong cleaning solvent. Note that this stuff is so nasty that your mother/wife will kill you if you spill it in the garage, so do it outside! Then rinse in water, blow out all the small passeges with compressed air. Next you make sure that the float level is correct. You will need a manual to get that information, but a manual is something you should really have anyway. Next you make adjustments on the metering jet. This is the needle that is operated with the throttle cable. It will have a small clip and numerous slots that it can be adjusted to. Sliding the metering needle down will lean out the mixture, moving it up will richen the mixture. Try it in several locations and pick what works best. Next is to adjust the idle mixture. Get the bike idling as slow as it will then adjust the mixture for best idle. If it is idling too fast then adjust the idle speed screw (different than the idle mixture) and then adjust the mixture screw again for best idle. Repeat as necessary. When things are working reasonably well put a new plug in, ride it hard for a while and then pull the plug and inspect. The center insulator should have a light tan color to it. If it looks wet then you may be running too rich, if it looks ash white you may be running too lean, either of which may require a change of the main jet. If the plug looks oily then you might be running too cold of a plug. Rod [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
yz 125 wont hold idle, and dies after revs!!!
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