Scott9096 Posted March 17, 2009 Share Posted March 17, 2009 My sister has a Yamaha CS50 Jog R and it keeps cutting out either when she is idling, it was recommended that we change the carburetor,which we did but it still hasnt solved the problem. When it does cut out it wont then either kick start or electric start unless we pull back on the throttle at the same time as starting it. I thought it might be something to do with the idle jet but as im dont deal with mopeds much i wouldnt have the foggiest where to look for it and i cant find any diagram to help. I just wondered if anyone could help, ie with another diagnosis or a description of where to look for a solution Link to comment Share on other sites More sharing options...
wild foamy Posted March 17, 2009 Share Posted March 17, 2009 could be a blocked pilot jet, or a simple matter of the idle speed being set too low. adjust the idle speed screw (clockwise) to increase the idle speed and see if that helps, if not you may need to clean your carb Link to comment Share on other sites More sharing options...
Scott9096 Posted March 18, 2009 Author Share Posted March 18, 2009 I can see 2 screws one with a spring behind it and the other is set back in a brass fitting which screw is which. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted March 18, 2009 Moderator Share Posted March 18, 2009 I can see 2 screws one with a spring behind it and the other is set back in a brass fitting which screw is which. Not familiar with the bike, but I would assume the idle speed screw has the spring behind it and the other will be the mixture screw Link to comment Share on other sites More sharing options...
Scott9096 Posted March 19, 2009 Author Share Posted March 19, 2009 Thanks ill have a look soon and see if it helps at all Link to comment Share on other sites More sharing options...
Paget Posted July 3, 2009 Share Posted July 3, 2009 Hi, I believe that I've been having a similar problem with the very same model. I was wondering if aynone knew of any repair manuals that I can find online to look at? I remember taking the chassis off a year or more ago but I can't remember now how to do it exactly and I need ot get to the carb to clean it. Thank you Link to comment Share on other sites More sharing options...
YamaGod Posted July 7, 2009 Share Posted July 7, 2009 Hi, I believe that I've been having a similar problem with the very same model. I was wondering if aynone knew of any repair manuals that I can find online to look at? I remember taking the chassis off a year or more ago but I can't remember now how to do it exactly and I need ot get to the carb to clean it. Thank you Hi, you got the link for the manual in your other post. Bye. Link to comment Share on other sites More sharing options...
Milner Posted March 14, 2011 Share Posted March 14, 2011 thanks for the manual, I have a CS50 this should come in handy. Link to comment Share on other sites More sharing options...
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