darrensn Posted June 29, 2014 Share Posted June 29, 2014 Hi, We have a 2010 Beta Evo 80 Big Wheel, which needs the pilot jet cleaning regular as it seems to block quite easily. It is a #38 and i was wanting to know if this is the right size ? The bike can also momentarily cut when on half throttle and it catches the lad out when on a climb, is this connected to the pilot jet size ? Any suggestions are welcome ? Thanks. Quote Link to comment Share on other sites More sharing options...
dadof2 Posted June 29, 2014 Share Posted June 29, 2014 38 jet or much smaller should not block Sounds like you have dirt or water in your fuel, thorough clean out of tank, fuel lines and carb needed, perhaps the in tank filter is faulty. Quote Link to comment Share on other sites More sharing options...
lineaway Posted June 30, 2014 Share Posted June 30, 2014 More likely it is the condition of your gas can. Quote Link to comment Share on other sites More sharing options...
twinshockdude Posted June 30, 2014 Share Posted June 30, 2014 38 is the correct pilot jet,we had the same problem with the engine cutting out,it was caused by low float height,we set it to 16mm and the problem went away.basically it was continually running the carb dry !! Quote Link to comment Share on other sites More sharing options...
darrensn Posted June 30, 2014 Author Share Posted June 30, 2014 Thanks for all your replies ... twinshockdude - Please tell me where you measured the 16mm from ? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
twinshockdude Posted June 30, 2014 Share Posted June 30, 2014 the float height should be 16mm measured from the gasket face to the furthest part of the plastic floats make sure both sides are the same,adjust by bending the central tab - be gentle !!!! Quote Link to comment Share on other sites More sharing options...
darrensn Posted June 30, 2014 Author Share Posted June 30, 2014 Thanks for your help twinshockdude ...... Quote Link to comment Share on other sites More sharing options...
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