2000 Phazer bog - Clutching Gurus and other mere mortals like the rest of us !!!

Ding

Ding

Darn Tootin'
Joined
May 8, 2003
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Howell, MI
Going through a couple 2000 Phazers that both have a similar problem. They both bog and won't climb in RPMs in certain conditions. I have ruled the following list out and am looking for input on the clutching and any other ideas.

Ruled Out . . .


  • TORS
  • Engine not making power
  • Stator
  • Ignition coil

Still to be investigated . . .


  • Secondary sticking open - cursory glance so far and doesn't look likely
  • Primary Clutch Weights have a groove in tip area (see pictures)
  • Some drag on the drive train that comes and goes - unlikely but possible
  • others added as I go

So here are pictures of the clutch weights . . . (Obviously someone ran continuously at WOT on these machines trying to keep up, hence the groove).

20160201_190822.jpg20160201_191049.jpg

Question is . . . With these lower powered sled (65 hp maybe), do you think this groove could be enough to cause the bog?

Basically after getting back on the throttle after a corner or when boondocking it bogs at around 5500 RPM or so and will not climb above it until you let completely off and then get back into it. Sometimes it takes several attempts which is very annoying when trying to make your way around trees in deep snow.

Both of these sleds are geared down 11% from stock. One has a 144 track, the other a 121 ripsaw.

Let the input begin, please don't hesitate if you think you have something.

Thanks, Ding
 

Just adding that the rest of the primary looks good - these machines are easy on the clutches. I have yet to test the primary spring rate though. It is a stock G-P-G with a free height of 78 mm.
 
shortrun said:
?? primary spring too weak ??
Click to expand...

Been wondering the same thing, but can't find my tester. Free height is at spec, but of course that doesn't mean anything. Anybody got a way to test these without a spring tester?
 
I am pretty sure that notch is your problem. Yamaha weights are extraordinarily hard. I don't think you could wear a notch in them like that. I am thinking some knucklehead thought they were grinding an engagement notch in them and did it at the wrong end.

Sent from my SM-G920V using Tapatalk
 
Sorry I'm no guru.
I have read about using a drill press and a bathroom scale, but have no experience.

I am totally new to yamaha, first fanned - phazer this year.
If it was a yellow machine, I would try give the the secondary , increase the spring load by a few pounds. But maybe that is not how the yamaha clutch works.
 
Is it me or does that look like a very heavy weight for a Phazer?? Check the numbers on the weights and see if they jive. Although the weights are wore, I would suspect a notch tighter on the secondary wouldnt hurt, or a smaller angle helix.....I would replace the weights first though.
 
I have never seen weights worn like that before!?! Are both sets the same? If they are, I think someone has modified them. As suggested above, check to see if weights and rivets are correct for the sleds "factory" set up as well.
 
I have owned this sled since new, and that is wear you are seeing. Over 10K miles on this machine and clutches (only 6K on the engine), and a lot of those miles were wide open. I wouldn't have believed that much wear until I saw it. All of the parts are stock 2000 Phazer 500. I did have the secondary at 80 degrees for a little better backshift. This particular sled has 8 tooth 2.52 drivers and a 144 x 1.25 ripsaw with stock gearing (down 11% due to driver change).

Spring is a short Green-Pink-Green (stock).
I will replace the weights and see what happens.
Yes they are 8DJ weights with 17.2 in middle and 13.9 in tip.
I am thinking of trying 8CH weights, but don't really have a good starting point for spring and rivets.
 
Last edited:
I got them today, thanks. I have the 8CH's in the sled now and will test tomorrow. I am running the "possibly tired" Gr-P-Gr spring, so expect some overrev. But I have to start somewhere.
 
Anybody got any guesses on what difference to expect between the 8DJ and the 8CH weights. I forgot to write down what rivets are in the 8CH's and now I forgot but it seems like 13.9 mid, 17.2 tip. This is also what the 8DJ's had in them.
 
I took those off of my sons 99 SX6. According to the year specific specs, 8DGs were stock on that sled. Now that I read that ...... That doesn't help at all.
 

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Yah I got all the charts, but I have never done any testing with these "lighter" weights.

btw: the grooves in the 8DJs you sent me only have about 1/4 of the wear that mine do. Wish you had the 3rd one ;)!
 
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