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Local bearings supplier is researching the needle cage bearing and large o-rings on top of the cylinder. May just have to buy them from Rotax UK.
So, as I understand it, this crank bugger can’t be ‘easily’ disassembled to replace the big end bearing. Not impossible, but it will be easier to replace the assembly. I’m calling the UK guy with NOS parts to see what he has in stock tomorrow. He has the entire piece for a ‘fair’ price apparently.
Assuming that since I’m in the bottom end, I should replace any and all bearings while I’m in there. Whatever ‘mains’ are.
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pdlouche
Could always just assemble it yourself. Get the bearings and seals from a bearing supplier.
Now let's talk about enlarging the transfers for more power