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TRX 400 2004 won't run after valve clearances?

1684 Views 10 Replies 7 Participants Last post by  Hondawasaki
A friend has a TRX 400ex, he checked the valve clearances (as far as I know) tightened them a little as they were loose.

Since the above the bike hasn't started, I've had a quick look at the manual and set clearances to 0.1 and 0.12 and it still won't run, it seems such an easy straight forward job I can't understand what has gone wrong? Am I missing something? It's the first time I have ever touched an ATV, I have worked on dirt bikes a lot. I am reading about a decompressor adjustment?
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Spray some starting fluid in the intake with the filter off and choke off and see if it fires for a few seconds on that. If it does its a fuel flow issue. Petcock could have gone bad when you turned it off to remove the gas tank. Check all the easy stuff. Kill switch and all that stuff. Cant tell you how many times i have missed something that just ended up being simple. Did the gas tank get set in a way that fuel could have ended up in the tank vent and be not allowing fuel to flow into the carb? Try removing the lid and see if it starts then. You only remove a few things to get to the adjustment covers so our options are limited. Try tapping the side of the carb. Maybe the carb float got stuck closed and isnt allowing any fuel to come in?
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