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I recently bought a Rhino. It’s my first side by side. It was cheap so jumped on it. However, the oil was low and black. And once I did an oil change it began smoking pretty dang bad so...I’m thinking of a top end rebuild. It will only be used to put put so no big deal but, I can’t find any good how to for the 450. Only 660. Also, any suggestions if I should have head serviced?
 

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Get a Yamaha service manual and it will walk you through the whole top end rebuild.


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Welcome to the site, rebuild is above my pay scale, hopefully if someone has done it they chime in. You can go to Tinken's signature on hear and download a maint manual just click on your engine size. My 05 660 is starting to smoke so I've been adding Lucas oil treatment and it has calmed down a lot, but the day is coming....
 

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Top end is pretty basic if u are mechanically inclined


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I usually use safetywire go thru a link in the chain and tie it up to something


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06’ 450 Smoking/Top End How To

Not uless it looks bad after you clean it uo but you will want to do this is the cylender wall doesent have deep scratches in it



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So,,,,,to add to everything I’m noticing a pattern which may help the more knowledgeable diagnose maybe what my issue is. It seems that most of the smoking is at startup. I can fire it up and let it idle for a few minutes then once I smash the gas it pours smoke. Then after getting up to speed and riding for a minute it gets way better. Thoughts?
 

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So,,,,,to add to everything I’m noticing a pattern which may help the more knowledgeable diagnose maybe what my issue is. It seems that most of the smoking is at startup. I can fire it up and let it idle for a few minutes then once I smash the gas it pours smoke. Then after getting up to speed and riding for a minute it gets way better. Thoughts?


I would say rings if it stops after its warm, if its warm and u mash it and it smokes then valves


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So,,,,,to add to everything I’m noticing a pattern which may help the more knowledgeable diagnose maybe what my issue is. It seems that most of the smoking is at startup. I can fire it up and let it idle for a few minutes then once I smash the gas it pours smoke. Then after getting up to speed and riding for a minute it gets way better. Thoughts?


I would say rings if it stops after its warm, if its warm and u mash it and it smokes then valves


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I thought it was bad valve seats if it smokes when it’s cold and bad rings if it smokes when it’s warm and you mash the gas?

Either way, if it were me going through all of that I’d do a piston and rings while I was in there.


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Is it white, blue or black smoke comming out? Did ur oil keep getting low?


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Is it white, blue or black smoke comming out? Did ur oil keep getting low?


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It’s blue smoke. You can smell the oil and I haven’t ridden it enough to matter yet for oil level. I live in a subdivision and ride my kids around a couple blocks is all lol
 
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