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srx mountain

Hey,

Just looking for some info here. I have a mountain srx with a 600 srx motor in it not the original 700. I bought this from a kid. And was told it had a welded crank, new pistons rings but was unclear on bottom end assumed it was done when crank was sent in. Well this past week went out west it was running just fine then on Thursday it started to act up as if it was losing fuel. Started getting a real bad engine noise from the outside cylinder closest to the primary clutch. Motor never seized but it sounded like something let go. Shut it down and pulled plugs had good compression from all 3 cylinders. But clutch was kind of loose you could wiggle it up and down at least an 8th of an inch or so. Have not tore motor down yet not sure if maybe spun an outside bearing or if the prob could actually come from clutch. Motor turns over easily. Just dont know what to do.. Have found a few used srx motors on ebay. Any engine help on this would be greatly appreciated... Thanks Bummed out:(
 
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Doesnt anyone out there in the snowmobile world or industry at least have an idea maybe of what it could be?? Just looking for some help here before I have to tear into and spend big bucks?? Thanks
 
It sound like you answered your own question, but not a spun bearing just a bearing that is falling apart. I don't remember off by hand but I think the PTO bearing just slides on and off the crank with no tools. I loaned out my shop manual so I cannot confirm this. Pull the engine and split the cases...............SRXtreme
 
Those main bearing's are incredibly tough and not prone to failure but If I remember correctly when you slide the bearing on you can put it on backward and the oil hole does not line up
If it's that it would be an error by the guy who put it together after welding
They can take out rod bearing's or smoke a piston if bad gas (they need 91) or wrong spark plug is used
 
the pto bearing on those l/c engines is a sealed bearing and its pressed on there they're a pain to get off but it sounds like its spun your best bet would be to find a complete used 700 to put back in it
 
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