660 Little to No bottom end (clutch maybe?) - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 17 (permalink) Old 09-12-2019, 07:13 PM Thread Starter
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660 Little to No bottom end (clutch maybe?)

Just made my first big boy purchase of a 2007 Rhino 660!
Motor and everything running great when I pick up a little speed but take off is terrible. Seems like it has to work so hard to take off. I got it in a very small bind today and the tires wouldn't even spin. The antifreeze started boiling and got super hot. I let it cool down, started it back up, put it in 4-low and it jumped right out.

I am mechanically inclined enough to change parts. I just want to be sure I order everything I need. I don't want to take it all apart and not replace the right parts.

I would greatly appreciate any help I can get on this. I have been all over this forum and youtube all week.
I don't mind to take it to get worked on but everyone is so backed up and im losing sleep thinking about fixing this thing.

What all should I replace while I have it tore down?

PLEASE HELP!

Nick
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post #2 of 17 (permalink) Old 09-12-2019, 10:13 PM
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If its me and knowing what i know about these things, first i would pull the primary and secondary sheaves. They prolly just need serviced but look at ur weights and everything else while u have them off. You may not need to buy anything but some grease


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post #3 of 17 (permalink) Old 09-13-2019, 04:30 AM
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When you take the clutch cover off, notice the position of the belt, should be even with top of secondary clutch the one on the tranny. If not then you have an issue in the primary and might just be dirty.

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post #4 of 17 (permalink) Old 09-13-2019, 05:50 AM Thread Starter
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Thank you guys!
Hunterworks, I actually sent a comment on your website last night haha

I will get into it today and try to post some pictures.

Do you think that the overheating issue could be because of the clutch having to work so hard?
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post #5 of 17 (permalink) Old 09-13-2019, 06:30 AM
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Quote:
Originally Posted by ndunaway View Post
Thank you guys!
Hunterworks, I actually sent a comment on your website last night haha

I will get into it today and try to post some pictures.

Do you think that the overheating issue could be because of the clutch having to work so hard?
Doubt they are related
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post #6 of 17 (permalink) Old 09-13-2019, 06:38 AM Thread Starter
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Can you tell anything of the picture attached?
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post #7 of 17 (permalink) Old 09-13-2019, 06:40 AM
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yes, as mentioned, if belt down in like yours is then the issue is in the primary most likely and might just be dirty but could have worn or broken parts
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post #8 of 17 (permalink) Old 09-13-2019, 06:46 AM Thread Starter
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Man you are awesome! Thank you so much for the help. I will take the primary off and try to hold it together to see if the weights are messed up and I guess just clean it up and re grease it.
As far as it overheating...that's just another hurdle to jump when I get there :/
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post #9 of 17 (permalink) Old 09-13-2019, 11:20 AM
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Red line is where ur belts been riding while running, with proper primary and secondary servicing the blue line is where it should b riding. Make sure u do the secondary also


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post #10 of 17 (permalink) Old 09-13-2019, 02:16 PM Thread Starter
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Wow that is super helpful Brian. So what all do I need to do the "service" them? All I was really going to do was open them up and clean them then re grease them and make sure the weights are in properly. Im not really understanding how cleaning them will get the belt to flush up with the secondary? Like I said, im mechanically inclined enough to change parts. I really wanna make sure I do it right
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post #11 of 17 (permalink) Old 09-13-2019, 06:05 PM
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660 Little to No bottom end (clutch maybe?)

If the weights arent traveling all the way out in the sheave it wont allow the sheave to close all the way forceing the belt up in the primary and down in the secondary. I could post some great servicing vids for primary and secondary but the higher ups wouldent like that, so go on youtube and search yamaha rhino sheave servicing. When we say servicing we mean disassemble cleaning and regreasing
Take pics of weights once u get it opened up before u clean em and post it

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Last edited by Brian Lee Rhino450; 09-13-2019 at 06:23 PM.
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post #12 of 17 (permalink) Old 09-13-2019, 06:24 PM
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Just to show u how the weights move causing sheave to close and open. When u do get urs open you may have the dr pulley weights in there but prolly its gonna b the round ones


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post #13 of 17 (permalink) Old 09-13-2019, 07:08 PM Thread Starter
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dang this is a really good way to dummy it down for me. now I actually know how they work. I will have it all tore apart and i will post pictures of my progress tomorrow. I plan on getting this thing in good shape. I should prolly get some mod rollers. i have 2" lift spacers and wheel spacers im putting on as well. i need to get this clutch situation fixed then figure out why its getting so hot. i was hoping it was bc of the clutch :/
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post #14 of 17 (permalink) Old 09-14-2019, 03:15 PM Thread Starter
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alright team. I think i found the culprit. looks like my primary is toast. As you can see in the pictures attached, one of the inside fins is snapped and one of the rollers got chewed up. Also all of the sheaves have some pretty good grooves in them.
My question is...should i just order a primary AND SECONDARY? Im ready to get this bad boy Rollin...
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Name:	primary1.png
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Name:	primary2.png
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post #15 of 17 (permalink) Old 09-14-2019, 03:22 PM
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That will do it, a machined sheave is the best upgrade u can do on these rhinos, if the secondary is good just get a new spring that will will work with whatever weight rollers or sliders u get that go in the new primary. Whoever u buy the machined sheave from will let u know what spring to get for that secondary


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09 700 4seater, Nflow remanned motor with reverse upgrade, web cam, boared throttle body, duel muzzys with spark arrestors, MSDfuel controller. JBS Extreme2 sheave, SDR full radius cage, SDR doors, SDR long travel with summer brothers axles, Fox remote resi shocks with clickers on rears.
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