4.5’ Yanmar Grey Market Tiller Shear Pin(s)

[Kioti25]

Thanks everyone. Very helpful!
I did attempt to put a slip clutch on the tiller but there simply was not enough clearance between the gear box and the top of the tiller.
Dug a little deeper and agree there are no shear pins, but the bolts that connect the gear drive flange to the tine shaft are 12MM 1.75 pitch x 30MM class 7 (which is equivalent to a class 8.8 in the US or Grade 2 in SAE). The idea is that they are expected to shear if binding occurs.
I would like to find some class 6.8 or 5.6 bolts but so far I have not been successful. So, I will plan to run just 2 of the 3 class 8.8 bolts.
Probably told you all something you already knew about the class 7=8.8/ Grade 2 but maybe not and maybe my struggle answers someone else’s question too.
God Bless!

 

[careyo63]

I had to shorten a Drive shaft to make mine fit, Or pull the Overrun clutch and not have one. Yanmar Ym2000 RS-1400. We dug out the wrong PTO shaft from the spare parts Warehouse. To long. Fredricks sent the correct one to the house when they found it. I was able to shorten the incorrect one that actually worked really well. I had nothing in it and gave it to a member on here. Who?. Never heard anything good or bad so all was well with it. IMHO. My Welding was bad I believe. Which I'm one handed pretty much...... cost of shipping. The size the PTO. Dr. should be also.

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[Kioti25]

I had to shorten a Drive shaft to make mine fit, Or pull the Overrun clutch and not have one. Yanmar Ym2000 RS-1400. We dug out the wrong PTO shaft from the spare parts Warehouse. To long. Fredricks sent the correct one to the house when they found it. I was able to shorten the incorrect one that actually worked really well. I had nothing in it and gave it to a member on here. Who?. Never heard anything good or bad so all was well with it. IMHO. My Welding was bad I believe. Which I'm one handed pretty much...... cost of shipping. The size the PTO. Dr. should be also.

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That looks pretty much identical to mine. After getting it operational this week I repainted mine AC Orange to somewhat match my KIOTI CS2025.

 

[careyo63]

My rear wheel mounts was cut off. That one's really nice. Small garden it was used on I never had a problem though. Tines are still available at Fredrick's. From the looks your tines are in good shape! Took longer hooking it up than it did to actually till the garden. They do work well.

 

[bmaverick]

That looks pretty much identical to mine. After getting it operational this week I repainted mine AC Orange to somewhat match my KIOTI CS2025.

Nice, now it looks like the Kubota version of the Yanmar tiller. This sort of thing was common in Japan for the brands with their suppliers. Today, Yanmar makes their own or via a contract builder they own a percentage of in Hungary.