On 13 Mar, 23:15, "robgraham" wrote:
I've been given an elderly (40-50 years) cultivator - 4 stroke Briggs
and Stratton single cylinder engine. Seems to be all OK and the
engine runs fine. However I believe I should be adding something to
the petrol to make it equivalent to that containing lead.

A local agricultural machinery company said this wasn't necessary, but
a decoke would be advisable.

What's the collective's opinion please ?

Thanks

Rob

Thanks guys - the thought had crossed my mind that the duty cycle,etc
would be so low that an additive might well not be necessary.

Interestingly I have tried several what I thought were suitable
outlets and they looked at me rather blankly !

Re. then suggestions of a decoke, how do I get round the probable
problem of a gasket, etc ?

Thanks again

Rob