Yamaha 2B 2 horse outboard - no fuel cap help ?

Yes a new cap from a dealer or a scrapped engine is the answer.
Its got to be petrol tight or it's dangerous and its got to be vented or it wont run.
 
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The lawnmower ones will probably be too small.....and the breather "holes" are permanantly open.

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Not on our old flymo. This has a screw closed breather identical to an outboard. But then I guess it's designed to be hung on its side on the wall.

In fact I think flymo engines used to be used on outboards. They'd have been very light too.
 
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