1980 Yamaha 440 SS

chadzeilenga

New member
Joined
Oct 2, 2009
Messages
72
Location
Crete, IL
I got a 1980 440 SS sled from my uncle for free. It ran good but he took it apart due to a leaky exhaust gasket, so now I'm going to put it back together.

Are there any suggested upgrades or improvements to do to this stock snowmobile while I have it in the garage and it is apart?
 

Great Sled. I'd check the main jet size. I have the original owners manual for mine and it calls for a #135. Sled ran super strong,but always acted lean. With todays gas I'd jet up to a 145.

Mark
 


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