my son got caught in a downpour and his NZ 250 suzuki conked out it restarted about 10 minutes later but only got about 5 minutes riding before he conked out again i had a look today and cleaned the sparkplug and there is a healthy spark but it wont fire on the start button or trying to clutch start it it just turns over and backfires could this be water got into the fuel from the rain?? should i drain the carby, how do i drain the carby?? undoo the screw at the bottom?
cheers in advance
Jim
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