problem finding neutral - carbed 900

Started by sofadriver, December 05, 2012, 07:41:56 AM

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sofadriver

I have a really hard time finding neutral on my carby 900 SS. It's really a PITA.  [bang]

This is not a "shifting technique" issue. I've tried all different ways.
It's not a slave cylinder or "bleeding" problem, either. All is good.

Before I pull the left sidecase I'd like to check the ball and spring that positions the shifter in the neutral detent. I know they are under the threaded plug at the rear. But, I'm wondering what's going to happen when I pull that plug. Any chance of that ball falling in? Anyone got a pic or drawing of that assembly?

Thanks.
Mike in Tacoma
'08 S2r 1000 - Red on Red
'96 900 SS/SP
'02 ST4s (gone but not forgotten)

IBA 38181

sofadriver

Mike in Tacoma
'08 S2r 1000 - Red on Red
'96 900 SS/SP
'02 ST4s (gone but not forgotten)

IBA 38181

Speeddog

If you can easily find netral with engine off, but difficult when running, that's a clutch drag issue.

Air in the system, warped or damaged plates.

How many miles on the clutch plates, and the basket?
- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

sofadriver

Quote from: Speeddog on December 05, 2012, 08:24:28 AM
If you can easily find netral with engine off, but difficult when running, that's a clutch drag issue.


Hmmmm........... I've discussed this at length on the SS forum but never looked at it that way. Makes sense.

OK, here's the new plan;
-Pull the clutch and check for warping. (mileage on plates unknown)
-Replace the banjo bolt at the master with one with a bleed screw. Can you recommend a top-quality one?
-Replace the pressure plate bearing (19,000 miles I assume). I've found one that just happens to have a gorgeous pressure plate wrapped around it.  [thumbsup] http://www.motovationusa.com/mvstore/scripts/prodView.asp?idproduct=482

My slave cyl. is aftermarket (can't recall the brand). Most of those are a little higher in volume to make the clutch pull easier. Seems to me that might reduce the clutch rod travel, too. Is that correct?
Mike in Tacoma
'08 S2r 1000 - Red on Red
'96 900 SS/SP
'02 ST4s (gone but not forgotten)

IBA 38181

Speeddog

My recommendation is to do the free stuff first.

Pull the clutch lever, and watch the pressure plate.
How far does it move?

Larger diameter slave cylinders reduce lever effort *and* travel.
Sometimes with an adjustable lever set close to the bar, there's not enough travel.

- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Speeddog

Also, given the vintage of your SS, I wouldn't be surprised if the primary piston seal in the master is shot.
- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

motoxmann

Quote from: Speeddog on December 05, 2012, 08:24:28 AM
If you can easily find netral with engine off, but difficult when running, that's a clutch drag issue.

Air in the system, warped or damaged plates.

How many miles on the clutch plates, and the basket?

x2
in my experience with all things two-wheeled, 90% of the time this occurs it's due to a worn clutch basket. grooves get worn into the basket, and even when you pull the clutch lever the plates still get held together a bit due to the positioning of the grooves in the basket, and the plates trying to stay in the lowest point of the grooves.

also, a bleeder at the master I think would be fairly pointless. the bleeder at the slave is all you need