hole?

I have a YZ426F and on the RHS of the barrel/head I have a hole in between the head bolts and I was wondering what this is for?

any idea's

thanks

Wayne

Its a drain hole for the area the spark plug is in. Also to blow compressed air into to clear that area of debris before removing the spark plug.

thanks

Good question and good answer :) Thanks too!

Its a drain hole for the area the spark plug is in. Also to blow compressed air into to clear that area of debris before removing the spark plug.

Ditto!

One time I was at a local electrical supply house and I came across some cool looking wire. It was 3 braided 24 ga wires and was pink,lightblue, and a dark purple color. I bought a few feet and epoxied one end in this hole and the other end to a My-chron data aquisition equipment.

Drove some peole mad till our mechanic walked over one day and just yanked it out.

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