Decompression Shaft Bolt Query

Hi,

I have a hole on the right side of my YZ426F 2001 engine, near the decompression shaft. (Please see picture below)

yz426fengine.jpg

Should there be a bolt here?

The bike starts and runs fine, I haven't had the bike long and just wanted to check that this hole was normal.

Thanks for your help.

Yes, there is a special bolt that has a turned-down step on the end. It holds your decomp assembly in place.

The Yamaha part number for the bolt is 90109-06418-00

You'll need the washer too. 90430-06014-00

It's item 13 and 14 in the pic,

426cams.gif

Hi,

I have a hole on the right side of my YZ426F 2001 engine, near the decompression shaft. (Please see picture below)

Should there be a bolt here?

The bike starts and runs fine, I haven't had the bike long and just wanted to check that this hole was normal.

Thanks for your help.

You might have a broken bolt in there. If there is nothing in the hole, it would leak oil from there when it's running.

Or...you have no oil in the engine?

Thanks for your help with this. It's much appreciated.

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