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Jonsered 2071 crank compatability

BonScott46

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Pulled down my low hour 2071 and found this.
DBE272CD-E5B2-4424-8B76-8A17E7EE9E75.jpeg 5946A980-F11D-47BF-A502-9FDF939340D7.jpeg
Does the later model 372 crank swap in or do I need to change the PTO side case half as well?
 

XP_Slinger

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BonScott46

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I believe it’s a direct swap. Although I fail to see why the loss of finish on the connecting rod warrants a crank change. What am I missing?
Is it supposed to narrow like that? It starts narrowing where the finish is missing. I have never seen a crank like that but i have not seen a lot of cranks either.
 

BonScott46

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Well that is good news. There was quite a bit of carbon/sooty build up in the cases, on the piston and in the combustion chamber. When I bought this saw the piston was very clean and I have only run max ten tanks of very clean burning fuel through it. Should i give it a polish and let it ride then?
 

XP_Slinger

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Well that is good news. There was quite a bit of carbon/sooty build up in the cases, on the piston and in the combustion chamber. When I bought this saw the piston was very clean and I have only run max ten tanks of very clean burning fuel through it. Should i give it a polish and let it ride then?
I would, nothing wrong with that con rod at all. I just had my 372 apart not long ago but don’t have any pics of the con rod. I know it looked exactly like yours
 
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