Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer 
Cotton or synth sweat-wicking t-shirts with the Horizons Unlimited logo on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
ll 5 DVDs with a custom printed slip case. "The series is 'free' because the tips and advice will save much more than you spend on buying the DVD's."
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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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#1
22 Apr 2007
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3AJ update, any ideas?
The last few attempts to start the bike have seen it backfire hard enough to blow the carbs off their rubbers!
It started and ran fine yesteday (under it's own battery power) but when we went to start it again, it wouldnt play ball. Valve timing? the chain was zip tied to the sprocket before the work started, and hasnt been moved. Could having a much less worn cam and head mean the valve timing should be re done? Its not getting the best spark, but getting sparks and petrol. Any Ideas? Thanks Pete 
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#2
22 Apr 2007
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Backfiring.
I had an XL500 not so long ago, after reboring and rebuilding I had the same problem. Sounded a bit like a shotgun going off. We diagnosed it in the end as a sticking valve because it was an intermittent fault. Head off, new valves, back together and problem solved.
Possibly the same problem for you? Good luck
__________________
Be the person your dog thinks you are.
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#3
22 Apr 2007
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Thanks or that we'll have a look at the valves. Getting restless to get back on my XT!
Pete
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#4
22 Apr 2007
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Backfiring
Oh, forgot to mention that we changed the guides and seals at the same time for good measure. Might as well while you are in there and sometimes the guides can be contributing to the problem.
__________________
Be the person your dog thinks you are.
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