Author Topic: New project bike  (Read 1089 times)

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Offline Bodain

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New project bike
« on: September 12, 2009, 08:02:43 PM »
I had been laying off, working in the garage all summer, just because it was too hot.. So I'm in this situation. Now the weather is cooling down and I'm without a project. I've simply got to have a beater bike to work on. Everything I have is complete and doesn't need anything. What's a guy todo? Anyway I've been real close to CL these last few weeks. Looking at a lot of bike's, but not really buying anything. Well today I decided on a Suzuki. Picked up a 1979 GS750..  So I've been in the garage most of this rainy day fiddling. It's good to be back in the garage without sweating my ass off.

Anyway this GS750 has CV Mikuni carbs.I've only been into CV carbs one time several years ago. Didn't have any problem getting the job done. So I'm into these carbs. I just want to be sure the jets are clean. To my suprise!! I can't find a pilot jet. A bit of research and I find it.
It's recessed and under THE PILOT JET PLUG, which is a rubber boot. Logic would tell me this jet can't get gas. What am I missing?


2009 Suzuki TU250
2014 Honda Grom
1984 Kawasaki GPZ 750
2005 Yamaha Zuma 50
1974 Honda CB 750
1979 Kawasaki Z750 Twin

Offline tomkimberly

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Re: New project bike
« Reply #1 on: September 12, 2009, 09:04:11 PM »
Notice the tube sticking up in your picture?

You need that plug.


Tom

Offline Bodain

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Re: New project bike
« Reply #2 on: September 13, 2009, 06:34:03 PM »
I know I need the plug... I'm just trying to figure out how gas gets to the pilot jet...

I believe that tube is the path for the choke circuit. I believe it. That doesn't mean it's true.

I also posed the question on the GS forum. They seem to believe there is a circuit between the main jet and that leads to the pilot.
2009 Suzuki TU250
2014 Honda Grom
1984 Kawasaki GPZ 750
2005 Yamaha Zuma 50
1974 Honda CB 750
1979 Kawasaki Z750 Twin

Offline tomkimberly

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Re: New project bike
« Reply #3 on: September 13, 2009, 07:04:30 PM »
I know I need the plug... I'm just trying to figure out how gas gets to the pilot jet...

I believe that tube is the path for the choke circuit. I believe it. That doesn't mean it's true.

I also posed the question on the GS forum. They seem to believe there is a circuit between the main jet and that leads to the pilot.

You are corect, see here: http://images.google.com/imgres?imgurl=http://i177.photobucket.com/albums/w230/chubbytwo/pilot_question.jpg&imgrefurl=http://www.kawasakimotorcycle.org/forum/mechanics-corner/66640-mikuni-pilot-jet-question.html&usg=__yUizUX8pkeKMN78gsMD2kbcij4Y=&h=592&w=529&sz=63&hl=en&start=53&um=1&tbnid=4KvKu8qP_jMfrM:&tbnh=135&tbnw=121&prev=/images%3Fq%3Dmikuni%2Bcv%2Bcarburetor%2Bsuzuki%26ndsp%3D21%26hl%3Den%26safe%3Doff%26sa%3DN%26start%3D42%26um%3D1


Tom

Offline mlinder

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Re: New project bike
« Reply #4 on: September 14, 2009, 02:52:43 PM »
Yep, it's draw from the main circuit. Baffled the hell out of me too when I took some CV carbs apart from a gs550.
No.


Offline Bodain

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Re: New project bike
« Reply #5 on: September 14, 2009, 05:27:58 PM »
Ah ..... Thats what I'm looking for. Nothing like a correct picture to explain it in detail. I had been on Mikuni's site and countless others.
2009 Suzuki TU250
2014 Honda Grom
1984 Kawasaki GPZ 750
2005 Yamaha Zuma 50
1974 Honda CB 750
1979 Kawasaki Z750 Twin