luke7129 Posted December 2, 2018 Report Share Posted December 2, 2018 Hi, I was after some advice please. I have fantic 245 with a 301 motor in it but the plug is always blacking up. Any suggestions on carbs and jetting? Thanks Quote Link to comment Share on other sites More sharing options...
basecampkid Posted December 2, 2018 Report Share Posted December 2, 2018 Hi Luke7129 standard 301 Fantic Carb settings are : Dellorto PHBH 26 BS Main Jet 102 Pilot Jet 45 Needle X5 2nd notch Slide 45 Air Screw 1 Turn out, dont forget, with Air screw its out to weaken mixture, in to richen, also standard plug is NGK B8ES, or Champion N3, hope this helps. Quote Link to comment Share on other sites More sharing options...
fourex Posted December 3, 2018 Report Share Posted December 3, 2018 (edited) Those specs from 'basecampkid' are spot on as per the manual, here's the page from the 301 manual with some english inserted for the other jets and floats. I don't have a 301 bye the way, just a copy of the owners manual. It wont load, other specs are 70 choke jet, BN 264 Needle Jet, 8.3 gram floats. Edited December 3, 2018 by fourex Manual specs wont load. Quote Link to comment Share on other sites More sharing options...
luke7129 Posted December 3, 2018 Author Report Share Posted December 3, 2018 Thank you very much guys ?? I’ll get the carb to bits and see what it’s actually running on. Quote Link to comment Share on other sites More sharing options...
section swept Posted December 3, 2018 Report Share Posted December 3, 2018 You need to make sure the exhaust system is not bunged up, this will cause the same issue. The same for the air filter, needs to be nice and clean? Quote Link to comment Share on other sites More sharing options...
luke7129 Posted December 3, 2018 Author Report Share Posted December 3, 2018 The exhaust is as clean as I can get it, I give it a good clean and repacked the silencer. And I always clean the air filter every couple of trials Quote Link to comment Share on other sites More sharing options...
alberto Posted December 3, 2018 Report Share Posted December 3, 2018 21 hours ago, basecampkid said: Hi Luke7129 standard 301 Fantic Carb settings are : Dellorto PHBH 26 BS Main Jet 102 Pilot Jet 45 Needle X5 2nd notch Slide 45 Air Screw 1 Turn out, dont forget, with Air screw its out to weaken mixture, in to richen, also standard plug is NGK B8ES, or Champion N3, hope this helps. needle x5 but i suggest you 1 st notch Quote Link to comment Share on other sites More sharing options...
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