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Old 12-18-2010, 01:38 PM   #1
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Walbro WF Carb

I have a Walbro WF Carb,they called them the floater carbs,well I put brand new diaphrams,gaskets,needle an set on it couple days ago an still does the same thing as before the new rebuild kit was put on.It floods out,spitting gas out the back port,gas eventually comes out the exhaust(or silencer which ever you prefer to call it)I'm baffled,the floater are suppose to be at what level?Please help this is a x-mas present an want it rinning in time.
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Old 12-19-2010, 03:46 PM   #2
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Okay went out an took one more look at my Walbro Carb to see if I could figure out the problem,opened it up looked at my diagram for the carb first problem I didn't put the spring on top of the needle I put it on the needle itself(whoops),second I had a gasket an diaphram backwards,an third an final my float were way off they were no where close to being 1 1/16 from the gasket.So the lesson I learned today was follow direction an pay close attention to detail.So my next question is what screw on the carb do I use to get the motor to idle?An why does my sled smoke like a demon from hell?
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Old 12-19-2010, 03:50 PM   #3
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Oh yea almost forgot I had to squirt some gas in the carb for it to fire the motor up why is this?But when I run it for a couple of mins an kill the motor, then start it in about five mins fires right up,but if I wait half hour or so have to use gas again to get the motor running.
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Old 12-19-2010, 05:56 PM   #4
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this help?
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I will give up my vintage sled when they pry my frozen dead thumb from the throttle......WOT of course!
68 P-17-H
70 Panther 340 JLO
70 Puma 740 Sachs
72 440 Panther
74 Double Eagle
75 Fury x2
79 Panther
88 Pantera
91 EXT 530
1970 Benelli Huricane 80
1966 Cub 102C
89 Plymouth Horizon.
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Old 12-19-2010, 06:53 PM   #5
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Yea I have ran across this an it helped me for my floats,the adjusments are for new engines will this still work for since my engine is not new?
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Old 12-19-2010, 07:26 PM   #6
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I suggest you go 1 1/2 on the air and 3/4 on the fuel. Now...does your have a curb idle speed screw or do you have to set your idle by adjusting the cable? I have found the bracket on top of the carb will bend and mess with your curb idle. Keep your idle speed high and back it sdown after you get'er dialed in. Heres the service manual..do you have this?

http://www.vintagesnow.com/Arctic_Ca...ShopManual.pdf
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I will give up my vintage sled when they pry my frozen dead thumb from the throttle......WOT of course!
68 P-17-H
70 Panther 340 JLO
70 Puma 740 Sachs
72 440 Panther
74 Double Eagle
75 Fury x2
79 Panther
88 Pantera
91 EXT 530
1970 Benelli Huricane 80
1966 Cub 102C
89 Plymouth Horizon.
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Old 12-19-2010, 08:10 PM   #7
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I don't have the curb idle speed screw,It never occured to me that I would have to use my throttle cable to adjust my idle speed,thanks this was very helpful,will adjust tomorrow
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Old 12-19-2010, 08:36 PM   #8
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glad to help. Thats one of cats "WTF" where they thinking ideas....LOL.
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I will give up my vintage sled when they pry my frozen dead thumb from the throttle......WOT of course!
68 P-17-H
70 Panther 340 JLO
70 Puma 740 Sachs
72 440 Panther
74 Double Eagle
75 Fury x2
79 Panther
88 Pantera
91 EXT 530
1970 Benelli Huricane 80
1966 Cub 102C
89 Plymouth Horizon.
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Old 12-19-2010, 09:23 PM   #9
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Yup,you are right about that
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