GL1200 Float Height


Information and questions on GL1200 Goldwings (1984-1987)
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Brealytren
Posts: 1
Joined: Sat Jul 05, 2014 9:38 am
Location: Coon Valley, WI
Motorcycle: 1985 Aspencade
1991 Voyager

GL1200 Float Height

Postby Brealytren » Sun Jul 06, 2014 10:06 am



Hello!
I'm new to the Board and am in need of information. I guess what I really need to do is buy a manual but you know how that goes...I have about twenty of them as mementos of old bikes I've bought and sold over the years. Other than specific data, I really don't need them. Anyway I'm deep in resurrecting a 1985 Aspencade and have the carbs ready for reassembly and for the life of me cannot find the float height spec. The manual section here on the Board does not include a Repair Manual. Sure hope someone can help. I did find one reference to .295 ..... but that seems like a very high level of fuel in the bowls. Thanks in advance!

Chuck



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skier
Posts: 154
Joined: Sun Jul 17, 2011 11:57 am
Location: Coon Rapids MN
Motorcycle: 1987 GL1200I 124k
2009 Honda Silverwing 14k -- the wife's scooter

Re: GL1200 Float Height

Postby skier » Sun Jul 06, 2014 1:27 pm

My Honda Service Manual says 7.5 mm, or 0.30 in.

BigBro
Posts: 55
Joined: Sat May 19, 2012 9:33 am
Location: Port Orchard, Wa and John Day, Oregon
Motorcycle: 1984 GL1200i Interstate

Re: GL1200 Float Height

Postby BigBro » Sun Jul 06, 2014 10:16 pm

My manual says 7.5mm or 9/32 (0.281) I have also heard 0.30.
What I do know is that delta is only 19/1000 of an inch. Barely discernable by todays standards.

So I would say you are generally in the ballpark if you made sure the little spring loaded plunger on the needle valve was just being touched and not compressed.

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Ed Z
Posts: 132
Joined: Tue Jun 08, 2010 8:19 am
Location: Baltimore, Md
Motorcycle: 2006 gl1800
1987 gl1200 Aspen
1983 gl650 Intersta

Re: GL1200 Float Height

Postby Ed Z » Mon Jul 07, 2014 11:30 am

Every time I have adjusted the floats on a 1200 it has come to be that the casting seems on the float ends up perfectly parallel to the carb body... Also ya need to tilt the carb such that no pressure is applied to the needle, then slowly tilt the carb till the float moves and just touches the needle... The small spring inside the needle assembly is not strong enough to support the weight of the float...

GregZ
Posts: 3
Joined: Tue Jan 06, 2015 1:53 am
Location: Dallas, Texas
Motorcycle: 1982 GL1100I Interstate
1986 GL1200A Aspencade

Re: GL1200 Float Height

Postby GregZ » Tue Jan 06, 2015 1:57 am

I am sorry to hijack the thread, but to which point on the float do you measure against? The "barrels" on the float have a rather large plastic weld that sticks out that interferes when you are trying to measure. Do you measure against that weld (about a mm higher) or against the barrel itself (ignoring the weld)?

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flash2002
Posts: 178
Joined: Mon Aug 30, 2010 6:38 pm
Location: Montreal, Canada
Motorcycle: gold wing 1800
2003

Re: GL1200 Float Height

Postby flash2002 » Tue Jan 13, 2015 4:18 pm

I just did mine and measured from the edge of the bowl to the top of the float on both sides to make sure the floats are even on both sides.

GregZ
Posts: 3
Joined: Tue Jan 06, 2015 1:53 am
Location: Dallas, Texas
Motorcycle: 1982 GL1100I Interstate
1986 GL1200A Aspencade

Re: GL1200 Float Height

Postby GregZ » Tue Jan 13, 2015 5:03 pm

I did measure it to the tiny welds on top of the barrel; 3D printed a nice little tool for it. Worked well.

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Ed Z
Posts: 132
Joined: Tue Jun 08, 2010 8:19 am
Location: Baltimore, Md
Motorcycle: 2006 gl1800
1987 gl1200 Aspen
1983 gl650 Intersta

Re: GL1200 Float Height

Postby Ed Z » Tue Jan 13, 2015 5:15 pm

That will make it a tad on the rich side as it is the barrels that really do the floating... The biggest thing is to insure the tiny spring loaded pin within the needle assembly is not compressed while doing the measurement... Ya have to hold the carb on its side and roll it just enough so that the float arm just rests on the needle seat in the closed position without the pin compressed... Takes a bit of getting used to, but is not too hard to accomplish...

GregZ
Posts: 3
Joined: Tue Jan 06, 2015 1:53 am
Location: Dallas, Texas
Motorcycle: 1982 GL1100I Interstate
1986 GL1200A Aspencade

Re: GL1200 Float Height

Postby GregZ » Tue Jan 13, 2015 5:31 pm

Done that (put the carb in a vice and set it so there is very little pressure on the pins). If you look at the Honda (or any other) carb tool, it inherently measures the distance from the gasket surface to the most sticking out point on the float, which is that small welding ring. If they specified 7.5mm using the Honda tool, then it should be measured to that point and not the barrel (the difference is really only a few tenths of mm).




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