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Hey guys, I've had ranchers pretty much since they came out with very little trouble and when I did I'd get on the forum and figure it out. Recently I purchased a 04 350 and it's got me stumped. From a cold start till about 5 mins of riding it purrs like a kitten, after it warms up and gets more under stress it has a knock that I can't figure out but, it sounds to be coming from the bottom right area. Any help would be greatly appreciated. I do have a video of the noise but can't figure out how to load it up on here.
 

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Did you adjust the valves on this bike and then it started doing this? Or did it just start doing it out of the blue?
Does not sound like rod to me.
 

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mine has a knock kind of like that but no where near that bad, could be rod knock or timing chain slap? Maybe if its loose enough. but honestly my rancher has been knocking since iv owned it. they do have a slight know kinda like a sewing machine.
 

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ranchers are push rod engines, to check the chain you'll have to pull the front cover, either way - that sound is not normal. time for a full tear down for inspection.
 

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ranchers are push rod engines, to check the chain you'll have to pull the front cover, either way - that sound is not normal. time for a full tear down for inspection.
That's right. I think I'm so used to loud engine noises being the old style that I just assume it. Thanks for the correction. I should know.....I've owned three of 420's!
 

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I agree with many that sounds like you best option, I forgot to ask but did you ever sink or submerge the rancher? if so it could mean washed out bearings which could explain the knock also
 

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Thanks for the replys and help. I took the motor out tore it down and everything in the top end is good. The bottom end is a different story. Timing chain was loose, and had some bad crank bearings. Yes it's due to the previous owner using it as a submarine. I found a rebuilt bottom end here locally at a shop and just purchased it.
 
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