Leaking Oil Cover or Possible Stripped Bolt - Yamaha ATV Forum
 
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post #1 of 4 Old 11-15-2018, 01:23 PM Thread Starter
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Leaking Oil Cover or Possible Stripped Bolt

Hello, I recently just bought a 2006 yfz 450. When I was riding I noticed that oil was leaking. So I shut it off right away. The oil is coming from the oil filter cover.
I changed the oil and filter and the leaking is still continuing. When I was putting the cover back over the filter I noticed the right medium length bolt that holds the cover is stripped. It went tight and then lose. Iím not sure if I should use a helicoil or simply tap the hole bigger and use and bigger sized bolt.
Help would be appreciated as I donít want to mess up my engine block haha.


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post #2 of 4 Old 11-19-2018, 10:50 AM
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a heli-coil would be best there is not a lot of extra meat in the cover to allow for a bigger hole and you retain the factory size bolt
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post #3 of 4 Old 11-19-2018, 11:54 AM Thread Starter
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I switched the smaller bolt for the medium bolt and it seems to hold with just a bit of drops of oil every now and then. I canít find. Helicoil that small. How could I retain the same size bolt if Iím making the hole smaller?


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post #4 of 4 Old 11-19-2018, 03:02 PM
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if the threads stripped it will fail again. be careful forcing the wrong size bolt in the hole you may make the hole to big for a heli-coil a helicoil does not make the hole smaller. you drill it out, use a reverse tap for the outside diameter of the heli-coil and thread it in. there are several good you tube videos on the subject. look on amazon, here is a link to a kit


but you can get the individual sizes as well
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