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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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Old 12 Dec 2006
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Strange petrol leak

Hello everyone,

Today, I thought I'd go for a quick ride, so I went to put a few litres in the bike. I pulled into the station, stopped the bike, turned the petrol tap to off as always and filled her up. When finished, petrol back on and kick her up. Nothing, thats not a problem, sometimes I can't start her up the first few times, then I looked down. There was petrol flowing out of the hole thats normally used to empty the float chamber, but not only that, one of the clear tubes that comes down from the carbs was flowing as well, but differently. Petrol would shoot out for a few seconds and then stop, repeating this every 10 seconds. To get home, I screwed up a small part of the ticket I got for the petrol, put it in the hole underneath the float chamber to stem the flow, and with gods help managed to kick the beast into action. The bike is an XT600 43F from 84'. Has anyone any ideas, could it be the floats sticking ? I've not had the time to have a good look at it yet but wondered if anyone had the same problem once over.

Thanks Chris.
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Old 12 Dec 2006
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That's the float sticking. Best to: close tap, open drainscrew at bottom of floatbowl, open tap, let run for few seconds, repeat when needed.

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Old 13 Dec 2006
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Thanks Aukeboss, I thought it would be something like that, but with the petrol spilling out of the drain I had some doubts. I'll give it a try this afternoon, could the cold have something to do with them sticking? It's only about -5c at the moment.
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Old 19 Dec 2006
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Hi there.

Give it some condense treatment, I had the same problem on my 86` Tenere last winter. Took the carbs off and cleaned them, emptyed the tank and filled it up with fresh petrol and a dash of antifreeze fuel treatment. Run like a dream after that.
Places to be and things to do, see you all out there!!


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Old 20 Dec 2006
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Anti freeze fuel treatment !

Hi Tomwest,

Well I've never heard of antifreeze fuel treatment, but I'll have a look in one of the bike shops, if I can figure out what they would call that here in France ! I've already used the advice from Aukeboss and that seems to have fixed it for the moment, but I need to do the clutch soon, well sooner than later because shes slipping like crazy, so I'll whip the carbs off and give them a good clean out. Thanks for the advice.
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