Throttle shaft seals which way?

Hi all

quick question when installing the throttle shaft seals does it matter which way they go in? When I pulled the carbs apart the original seals were on in both directions making it seem like it doesnt matter. Now after putting the carbs back together the idle fly's up to 4000rpm with throttle cable disconnected and idle backed all the way out . Ive searched through previous posts for this problem and can verify that I have bench synched using a needle, the butterflies are closing/snapping back both on and off the bike, the slides are smooth and not sticking and make a clunk, no holes in the diaphragm and the choke plungers are not sticking and open and close smoothly so I'm wondering if maybe I put the throttle shaft seals on backwards and is causing an air leak ? I did a propane test around the carb boots to it didn't make a difference I also pulled them Part inspected for deep cracks and put new gaskets on

 

k-moe posted a excellent graphic about that a few days ago, i can't find it now.
this is what you want > carb < > carb <
you want to see the open side of the seal when it's installed
that make any sense ?

 

Thats perfect thanks I hope this is what's causing the high so I can get my bike back together to go to work for Monday lol

 

Well this fixed the issue completely thanks again polock

 

Ok so 2nd question/ problem now after getting it to idle properly went ahead and changed the plugs out and put new ones ones in and now bike is idling at 4000rpm again. I swapped the old plugs back and the idle went back to around the 1050rpm I then swapped back to the new plugs one by one and it turns out to be cylinder 4 is the one causing the high idle when the new plug is in also the plug is white indicating it's lean my question is since it's cylinder 4 thats running lean and causing the high idle does that mean the problem would be within the carb 4 area or could it still be through out all the carbs ? Also I'm able to control the high idle using the air mixture screw on carb 4 right down to stalling the bike when I turn it all the way in .

 

I'd say it may have something to do with how the new plug in #4 is (or rather is not) sealing when installed. Does the lean condition follow the plug when you swap the new plugs around?

 

No actually when I switch back it's carbon fouled and slightly wet after a ride along with a major loss of power if I pop off the spark plug boot there's no change in idle or performance either (this is with the original plug) I then pulled the plug and grounded it to the engine to check for spark and its sparking blue so in short the original plug is always fouled and a little wet with power loss and the new plug is always white with tons a of power but high idle both plugs are bpr7es apparently it's not possible to get bp7es in Canada

 

I mean when you move the new #4 plug to another cylinder.

 

Ah ok yes I switched 3 and 4 around and the problem is still the same on cylinder 4

 

Tomorrow I will try the original plug on another cylinder to see what happens

 

#4 isn't firing when the idle is at 1k, the other ones are dragging it along. When you put in new plugs, #4 started working and the idle went way up. Set all the mixture screws at 2.75 turns out and use the idle knob to get it down to about 1500 and get some kind of running sync. then you'll be on the right path.

 

^ what he said.

Since the fault stayed with the cylinder, the problem was with the old plug not firing (though that was easier to figure out once you mentioned that the old plug was wet).

 

Ok thanks guys I don't have a carb sync tool but i will adjust the mixture screws out to 2.75 and adjust the idle knob and see what happens

 

just ordered the morgan carbtune pro and colortune kits but it probably wont be here until next week

 

I did the same a few weeks ago. I am pretty cheap, and realize you can make a home made sync tool, but the Carbtune really makes it a lot easier. I think you will really like both tools.

 

Sweet I hope so I can't wait to get this bike up and running properly