clutch problem - Yamaha Grizzly Forum : GrizzlyOwners.Com Yamaha Grizzly Forums


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Old 11-14-2009, 05:47 PM   #1 (permalink)
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Default clutch problem

What would cause a my grizz to kill instantly when placed in gear. It seems as though something is not right with my new EPI clutch kit. It was installed like a month ago and worked great; now it has a growl sound (faintly) when in neutral and when you put it in gear, it kills everytime.

Help!

Gunner!!! You prob know this one.
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Old 11-14-2009, 08:51 PM   #2 (permalink)
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mine did that when I put my greasless setup but it solved itself so im not sure what caused it.



but it seamed to be the wet clutch but i didnt get in there.
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Old 11-14-2009, 10:27 PM   #3 (permalink)
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I wonder if it ain't got something with the greaseless clutch thing....very frustrating might I say
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Old 11-15-2009, 08:03 AM   #4 (permalink)
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The growl sound could IMO only be caused by the primary not fully closing up thus taking pressure off of the belt. There may be interference keeping the weights from returning the the center of the clutch. If so the clutch sheave drive surface is going to get damaged if you let it go on to much longer. Having it stall though I haven't a clue. Weird. Could the brakes be engaged. This would account for stalling and a slipping belt.
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Old 11-15-2009, 09:58 AM   #5 (permalink)
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Grizw, Is it an electrical cutout, or is it a mechanical stoppage? If it's mechanical I'd bet that D has pointed you in the right direction... I don't know of any electrical safeties that were Yama-installed; just the physcial interlocks to prevent you from shfting unless the brakes are applied... (Removed by yours truly on my bike)

Take a quick peek by popping the cover off and seeing if the primary is opening up fully.
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Old 11-15-2009, 08:52 PM   #6 (permalink)
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The sut out is soley mechanical... cause if you have enough rpm when engaged, the wheeler will drive forward. It just sounds like the primary is not opening up. It even has a drag when starting, like the engine is starting against a load from the clutch.. I will pop the cover open tomorrow and check back with you all.

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Old 11-16-2009, 02:08 PM   #7 (permalink)
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Grizwaldo ole buddy ...I've had excellent results with the greaseless clutch so far & look'in to have even more carefree rid'in with in the future.

Now, having said that, I'd tear the clutch down & real careful like, see if any of the greaseless rollers have turned sideways or something.

If you can't tell, next, I'd grab hold of the cam plate & moveable sheave & pull & push to see if the sheave "Slides" in & out easily. Also, you should be able to "collapse" the cam plate, with the rollers, down into the sheave. In fact, do that before you start the motor, cause with no grease, there's nothing to hold the rollers in place. Don't ask OK!!!

If it does ... might be the one-way bearing ?? Might wanta check the secondary too ... and the condition of the belt ... and to make sure you have the belt installed in the correct direction .... Yes, it suppose to be installed sothe arrows on it are pointing towards the front .....How do I know ?? .... Well, why do you keep ask'inthese questions dude!!!

If it doesn't ... then it's something in that part of the clutch is not right.

Now I'm just think'in here ... but none of yer brakes pads are froze to the rotors& messed up in anyway ?? Wheels all turn freely ?? Driveshafts turn freely ?? No little kids or old girlfriends under the tires ??

Anyway, let us know what ya find out .................................................. ................ we're waiting !!!!!
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Old 11-16-2009, 02:27 PM   #8 (permalink)
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Just at work today and tore the clutch cover off and started the machine in park.... when the engine is idling the main or primary clutch is engaged and the belt is going around to beat **** on just idle. The belt is in the lower position of the sheeve and it operates like it is supposed to on the grizzhopper video with the exception that the video on low idle shows the clutch not rotating until rpm is picking up...this makes me wonder if something is messed up..

eh?
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Old 11-16-2009, 02:32 PM   #9 (permalink)
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i think you found your problem. it sounds like the sheave has the belt in some "gear" that isn't the lowest, kinda like trying to start out in 3rd. for whatever reason, the primary isn't returning to the lowest point.

or........ the wet clutch is stuck in the "engaged" position giving you the same effect.
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Old 11-16-2009, 03:56 PM   #10 (permalink)
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Something must be blocking it from shfting all the way back out to "release" the belt. WAIT A MINUTE! Yamahas don't have their clutches relase the belt; that's the job of the wet clutch... Has anybody in here installed an EPI clutch kit? You have to dig into the wet clutch with that kit, so the folks running one of those can give you some better advice on how things should look in there...
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