hi all,

don;t know if this would be of interest to anyone at all here but anyway:

if you are looking for a crank for the above yanmar diesel, usually fitted to the 3 cylinder compact tractor, and can't find one as they are not available anymore then you can find a crank for a 3gm30 marine engine which is the same in terms of big end and main bearing journals and easier to find. only problem is the 3t72 crank is shorter so the pulley end of the crank is not the same. what you will need is a lathe to turn down the end of your 3gm30 crank to bring the crank pulley area nearer and also recut the keyway and thread for the crank pulley nut. easy enough even with a small lathe and we are not re-machining bearing surfaces so absolute accuracy/grinding is not necessary.


voilą!