Question about 2004 Yamaha DT 125 R

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Wont start bought a second hand 2002 model 2 days ago on the test ride bike was observed to run "lumpy" but was told that the bike had been used very little in the last year and just needed a good run. whilst ridding home last night bike cut out and refused to start. was advised it sounded like coil, replaced coil and bike ran very roughly for several seconds before cutting out. then tried to bump start again bike ran roughly for several seconds before cutting out. now can't seem to get any responce at all. any help would be greatfully appreciated. many thanks

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FIRST thing to check is spark plug ,make sure it is sparking ,if it is and is wet change the plug .If plug is dry it could be the carb needs cleaning out if it has beesn stood for a while

Posted on Nov 16, 2008

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https://www.electrosport.com/media/pdf/fault-finding-diagram.pdf
1999 2002 Yamaha YZF R6 Service Manual R6 Moto Data Project
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