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Wrong pulley

T

Tom H.

Member
Hi all, I bought a pulley off flea bay that was supposed to have come off a TO30 but it is a bit bigger. The number on the back is Z129-302 not the Z120 number that it is supposed to replace. Does anyone know what this fits? Maybe a 35 or 50? Please let me know, and by the way it will be for sale.

Thanks
 
If your tractor is a TO30, it should have a Z129 engine and not a Z120. Are you 100% sure which engine you have? It will be on the tag on the left side (I think) of the engine.
 
There's two pulleys for the Z 129 & Z134. One has 4 7/16 bolt holes and other 3 3/8 holes. I don't show a pulley for the Z120 engine. This may be the difference.
 
Thanks all positive on the engine. The pulley I took off was too worn around the seal area and would never form a seal around the groove it had. That pulley had the z120 number on it. I found an ebayer with the same z129-302 that came off a TO35. It is also a much larger diameter pulley. The TO20 and TO30 share the same pulley.

Thanks again.
 
When you look at almost everything else on a TO30's 129 engine, 'Z120' is imbossed into nearly all the castings. You just can't overthink these things, or you will drive yourself nuts. Look for a Z120 pulley, I bet it'll fit like a glove...
 
(quoted from post at 20:45:56 04/13/15) There's two pulleys for the Z 129 & Z134. One has 4 7/16 bolt holes and other 3 3/8 holes. I don't show a pulley for the Z120 engine. This may be the difference.
Click to expand...

I have seen the TO-30 pulley with a Z129 casting number but indeed it is the same as the one for the Z120. They just updated the casting number is all. I have also see the Z129 pulley for the TO-35. I think it is a Z129K-302. I don't have my book in front of me right now to say for sure. But as Tony said just get one for a Z120 in a TO-20 and you will be fine,but watch the key way in them for cracks. I had one of those one time too!!!
 
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