Question:
i have a 50cc , four stroke atv. wondering if anyone might know of a website that i could get directions on how to adjust carb. hopefully with a diagram. any help would be very appreciated
Answers:
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Here are a list of diagrams of the cars:I have a 1977 CB750e engine in my chopper.?
http://www.sudco.com/diagram.html...
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They will also have any kinds of parts you may need for the Carb.
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And here's a site with Lots of links about tuning, from (what I, as a long time mechainc, consider the best) a jet kit manufacturer:
http://www.factorypro.com/tech/carbtun.h...
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And if you do a web search on "tune CV carb", it'll pull up over 100,000 results, some of which will most likely be detailed enough for your particular skill and understanding level.
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Cheers.
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Go to http://www.off-road.com/atv/kidskorner/i...If you need to adjust the idle mixture screw,on some carbs they put a small cap over the screw so you cant adjust them. Look on your carb and see if you have two screws,the smaller of the two will be the idle mixture screw. If you only have one screw that means the mixture screw has been capped with a little metal plug about 3/16th in round. you should be able to pull up a cut-away view of your carb on line and find the location of the plug. After you find the plug you can CAREFULLY drill out the plug with an 1/8th in bit,then use an icepick or an awl to pop the cap out, you will see the screw after you get the cap off. Then screw the mixture screw in all the way,just do it till it stops dont tighten it. Then back out the screw 1 1/2 turns,start the bike up and let the motor warm up completely.Then adjust your idle (the larger screw) down as slow as it will go and still keep the motor running. Then adjust the idle mixture screw until the motor idles as fast as it can. Then adjust the idle screw down to the normal idle RPM, again adjust the idle mixture screw until the motor revvs as fast as it can. If it doesn't make any difference or the motor slows down,turn the mixture screw back to your first adjustment point. Adjust the idle to normal RPM and you are all set.
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