Lost your valve inspection cap?

Lost your valve inspection cap? I have done lots of times.
You notice a strange sound from the engine and lots of oil on your leg and all over the bike.

This is how I have solved that problem.

Drill a 1mm hole throu the cap like this

and sequre it round a bolt with a wire like this.

Mead & Tompkinson used a rubber O ring made for Amal carb flanges.

Do not tighten the cap too hard, the tread will brake on the cap!!!

Updated 12 September 2001
© Rickard Nebrér