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whats the easiest way to check intake valves on 09 450

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these things are a pain in the but to knowe if ur actually at the correct clearance.anyone have a good way to tell and a good method.

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Its easy and there easy to work on. Its called a Feeler gauge! Or some call it a snap guage. You should beable to feel decent resitance on the feeler as it slides out from under the valve bucket. Or it may make a slight noise as it comes out from the tension! If the valves have the right spec. You will not Generally be able to put the next biggest size in and the next smallest will obviosly feel to loose. Hope this make some sense??

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well i know u have to use a feeler gauge im not that stupid.i ment to check the valve clearance cause the 09 has the cam completly cover.unlike the 08 and under years used the sides of the cam to hold it in place

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I think the OP is referring to how to access the cam lobe / valve bucket. Because there really isn't much room to work.

If your going to check them with the engine in the frame, you want to start by making sure the valve cover area is really clean and free of dirt, all the way back to the throttle body area. Clean the cables as well. Wipe everything down with a damp cloth. before you remove the valve cover.

Then get started.

Bring the piston to TDC

Remove the valve cover.

Remove the cam chain tensioner

remove the cam keeper. (be aware that the cam bearing thrust washers will want to drop out when you remove the keeper. You don't want these falling into the engine)

With down force on the cam measure your intake clearance

Using this method you want to be sure to put a good amount of down pressure on the cam as you take the measurement. Since your introducing human error into the process this isn't the best method, but if done correctly it will do the job. If your handy you could make some bearing caps from steel or aluminum stock lying around the shop and strap those over your cam bearings. This way you can work with 2 hands to make your valve checks.

I usually check valves when the engine is out of the frame for other repairs or maintenance. Which is typically every 30 - 40 hours.

The good news is unless your forgot to put in your air filter or had some other malfunction they really don't move. We have an 09 bought in Oct of 08. So its old. The valves have never moved on that bike, and it has well over 150 hrs of sever motocross use on the original valves.

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You can check them without pulling anything other than the valve cover. You will have to use your finger to "guide" the feeler into the cam/ bucket area. It not easy and you can bend the feeler if you push too hard, but it can be done.

Much harder than te old model crf.

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