Question about 2003 Yamaha YZ 125
Firstly check that you have a spark at the plug gap and if so is the plug wet with fuel ?If so on both counts try rubbing a pencil lead on the plugs gap ,this may sound daft but the lead from the pencil increases your sparks power five times .But only use this idea when bike fails to fire .if problem carries on check your air cleaner unit ,and if dirty change it .
Posted on Apr 26, 2010
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Posted on Jan 02, 2017
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