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Discussion Starter #1
Hello,

I just picked up a 1990 PhazerII a couple nights ago.
I've cleaned the carbs, swapped out some fuel lines and it seems to run pretty good.

Had it out for it's first test last night and found that it seems to fall on it's face a little when it is up to speed. It pulls well out of the hole and is up to speed as expected but I noticed that once up to 100kmh it kind of falls on it's face. The rpm's drop off and is not building speed like it should.

I pulled off the secondary and took it apart. it is set up in the C 2 position.
Is this right?
What is stock?
Maybe just a weak spring?
What should this thing rev at?


Thanks in advance for the help.
 

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c2 is what the yamaha book says, i been experimenting, im gonna try a2 next. im on b2 now and it seems to come out of the hole real hard.


sounds like the same problem im having right now with my phazer
 

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Discussion Starter #3
Hey phazedout,

I moved my secondary into A 2 on Friday night. Great out of the hole but still will not rev up to where it should. 7200-7300?

I will be replacing the spring in the secondary and in the primary and checking the bushings and rollers in the primary.

Keep me posted on what you find and I will do the same.

Thanks,
Drew
 

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i had somthin similar goin on.
i was only gettin about 110kms out of my phazer. i thought it might have been the belt i had on it cuz it is not the right size.
it revs right up to about 6800rpm and holds there and doesnt gain anymore speed once i hit 110
it also doesnt launch at all from a stop. i nail er and it slowly pulls ahead and then takes off.
i didnt clean the carbs this year and i think it needs it so i thought it might just need a cleanin but now im thinkin it might be clutch needin cleanin or maybe some work.
is this whats goin on with yers?
 

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Discussion Starter #5
i had somthin similar goin on.
i was only gettin about 110kms out of my phazer. i thought it might have been the belt i had on it cuz it is not the right size.
it revs right up to about 6800rpm and holds there and doesnt gain anymore speed once i hit 110
it also doesnt launch at all from a stop. i nail er and it slowly pulls ahead and then takes off.
i didnt clean the carbs this year and i think it needs it so i thought it might just need a cleanin but now im thinkin it might be clutch needin cleanin or maybe some work.
is this whats goin on with yers?[/b]
Yeah pretty much.

However I'm lucky is I'm pulling 62-6300rpm. Pulls great off the line to 100-110kmh (gotta love phazer speedo's :rolleyes: ) then she is tapped out and rpm's are low. This is happening with a brand new factory belt and freshly cleaned carbs.

I will be pulling the primary this week sometime to see if something is bound up in there.

Drew
 

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I have been doing the same thing with my 1987 Phizzer. RPM's are low, only 5500-6000 rpm's. Manual says 6300-7000 shift rpms. First I found a scored piston, replaced that, then went through my chaincase and bearings, OK. I have found some kinda drag where the track drive sprockets meet up with the track. I may have a bent drive shaft. I also had the front springs @ the stiffest setting and backed them off to the softest to take pressure off the slides. I do have the graphite slippery slides, but they don't seem to help.

I tried a new spring on the secondary, but it didn't help. I havent' gone throught the primary sheave yet. Engagement rpm is fine, around 3k's.

Anyone out there have the Yamaha factory manual? I REALLY want to know what the A,B,C and 1,2,3,4 settings on the secondary are supposed to do in the grand scheme of things. I really need to get my rpm's over 6k on top.
 

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I have been doing the same thing with my 1987 Phizzer. RPM's are low, only 5500-6000 rpm's. Manual says 6300-7000 shift rpms. First I found a scored piston, replaced that, then went through my chaincase and bearings, OK. I have found some kinda drag where the track drive sprockets meet up with the track. I may have a bent drive shaft. I also had the front springs @ the stiffest setting and backed them off to the softest to take pressure off the slides. I do have the graphite slippery slides, but they don't seem to help.

I tried a new spring on the secondary, but it didn't help. I havent' gone throught the primary sheave yet. Engagement rpm is fine, around 3k's.

Anyone out there have the Yamaha factory manual? I REALLY want to know what the A,B,C and 1,2,3,4 settings on the secondary are supposed to do in the grand scheme of things. I really need to get my rpm's over 6k on top.[/b]
i have a manual on cd i bought on ebay.

c-2 i believe is the stock setting on the secondary
6600rpm shifting speed and 3200rpm engagment

was somthin happinin for you to check the piston and find it scored?
 

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My Clymer manual says it's supposed to be on B-1, where I have it set now. Supposed to rotate it 60 degrees and put it together. I may try C-2 and see what happens.

I had oil all over the front of the motor, so I put new exhaust gaskets in. Checket the pistons through the exhaust and seen the scoring.
 

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im on a2 , no differance same problem.....i was gonna try a new secondary spring also. did u notice if your ramps were scored on the helix?

and by the way take the yamaha service manuel and burn it. clymers is way better, lets just say it doesnt get into much detail.....and alot wrong stuff.
 

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im on a2 , no differance same problem.....i was gonna try a new secondary spring also. did u notice if your ramps were scored on the helix?

and by the way take the yamaha service manuel and burn it. clymers is way better, lets just say it doesnt get into much detail.....and alot wrong stuff.[/b]

My ramp shoes were shot, so the helix is scored also. Manual says to sand it smooth, so I did. Greased it a little also. Replaced the ramps secondary spring, didn't help get my rpm's up.

My motor must not have the stuff to get up in the proper rpm's. I should pull the suspension out and go through all the idler bearings. I'm spraying some PTFE lube on the slides for now.
 

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Never had this problem with my 480. My belt's worn out, compression is low, carbs are filthy, and I still hit 7200 rpm and stay there. However, my Venture's geared low, so 100km is all I'm gonna get out of it regardless, with my 1" track.

One thing I HAVE discovered though to be a problem......oil is leaking out from my tach cable, and the wind tunnel effect from the clutches and belt spinning is sucking some of that leaking oil onto the belt, which has caused some less than desireable performance until it burns off.
 

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Discussion Starter #12
My ramp shoes were shot, so the helix is scored also. Manual says to sand it smooth, so I did. Greased it a little also. Replaced the ramps secondary spring, didn't help get my rpm's up.

My motor must not have the stuff to get up in the proper rpm's. I should pull the suspension out and go through all the idler bearings. I'm spraying some PTFE lube on the slides for now.[/b]

I would check your primary first before pulling the suspension. If the bushings in your weights are worn out or if your rollers are seized it could cause the problem. I will be pulling mine on Sunday to check these things out, wanted to do it this week but too busy.

My buddy has a 93 PhazerII that revs up as it should 7200-7300. Big difference in power. Both our sleds are running 119-120lbs on each cylinder.

Something is creating drag...... If the clutches come out fine then out comes the suspension and main drive............
 

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Somebody before me put a 1" lug Kimpex aggressor track on it. Will this take more HP to spin than the stocker? I just sprayed the clips and slides with synthetic lubricant and now the track spins pretty freely compared to before I lubed them. Can the clips create lots of drag if they are scored?

I'm going to try B-2 on my secondary sheave. I may go through the primary, but not today. We just got 12" of fresh snow! w00t
 

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Discussion Starter #14
My new primary and secondary springs did not come in yet but I did pull the primary to take a look.

Found that the washers that go between the weight bushing and main primary housing were all worn and or missing. 2 of them were starting to wear against the housing creating a small groove. These were easily filed down. I replaced all 6 washers and it totally took the slop out of the weights forcing them to to track in a srtaight line.

Put it all back together and gave it a run. Moved from 6200 to 6700rpm with the speedo reading 140kmh!!!! I am very confident that the replacement of my primary and secondary springs will get me the rest of the way. I should know by Thursday night.

Drew.
 

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My new primary and secondary springs did not come in yet but I did pull the primary to take a look.

Found that the washers that go between the weight bushing and main primary housing were all worn and or missing. 2 of them were starting to wear against the housing creating a small groove. These were easily filed down. I replaced all 6 washers and it totally took the slop out of the weights forcing them to to track in a srtaight line.

Put it all back together and gave it a run. Moved from 6200 to 6700rpm with the speedo reading 140kmh!!!! I am very confident that the replacement of my primary and secondary springs will get me the rest of the way. I should know by Thursday night.

Drew.[/b]
thats good to here
i had mine on a good run yesterday and couldnt get min up past 6200rpm or so its good to know where to start lookin
would yers rev higher with the track up off the snow?
 

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Discussion Starter #16
thats good to here
i had mine on a good run yesterday and couldnt get min up past 6200rpm or so its good to know where to start lookin
would yers rev higher with the track up off the snow?[/b]

I would assume it would rev higher if the track was not on the ground. Not touching the ground would offer up virtually no resistance. Never tried it but I don't think it will give you a good indication of the problem. I'm not mechanic by any means so I could be wrong. I can only really report on what I find.

I'll let you know when the springs go in.
 

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I have my secondary apart on 91 Phazer 2 and spring was in B1 position. Must be stock position.

Anyway, what does rotate 60 degrees mean when putting back together? How do I do that?

Also, there apears to be a range 40 degrees at C1, 50 degrees at A1, 0 degrees at B1 etc.

How does one tell what the exact degrees are and how to set it to the recomeded degrees?
 
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