Walbro WF Carb - ArcticChat.com - Arctic Cat Forum

 
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post #1 of 9 Old 12-18-2010, 12:38 PM Thread Starter
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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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post #2 of 9 Old 12-19-2010, 02:46 PM Thread Starter
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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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post #3 of 9 Old 12-19-2010, 02:50 PM Thread Starter
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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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post #4 of 9 Old 12-19-2010, 04:56 PM
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Sled: 68 Panther,70 Puma 744, 91 EXT 530.
07-08 Mileage: 500
ATV: 88 quadrunner 250 lt
this help?

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 Puma MOD 740 Sachs
71 292 Lynx
72 440 Panther
78 Tiger 5000
91 EXT 530
1966 Cub 102C
1968 cub 104C
88 Quadrunner 250 LT
83 Suzuki GS 650 GL
89 Plymouth Horizon
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post #5 of 9 Old 12-19-2010, 05:53 PM Thread Starter
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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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post #6 of 9 Old 12-19-2010, 06:26 PM
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Sled: 68 Panther,70 Puma 744, 91 EXT 530.
07-08 Mileage: 500
ATV: 88 quadrunner 250 lt
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

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 Puma MOD 740 Sachs
71 292 Lynx
72 440 Panther
78 Tiger 5000
91 EXT 530
1966 Cub 102C
1968 cub 104C
88 Quadrunner 250 LT
83 Suzuki GS 650 GL
89 Plymouth Horizon
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post #7 of 9 Old 12-19-2010, 07:10 PM Thread Starter
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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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post #8 of 9 Old 12-19-2010, 07:36 PM
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Sled: 68 Panther,70 Puma 744, 91 EXT 530.
07-08 Mileage: 500
ATV: 88 quadrunner 250 lt
glad to help. Thats one of cats "WTF" where they thinking ideas....LOL.

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 Puma MOD 740 Sachs
71 292 Lynx
72 440 Panther
78 Tiger 5000
91 EXT 530
1966 Cub 102C
1968 cub 104C
88 Quadrunner 250 LT
83 Suzuki GS 650 GL
89 Plymouth Horizon
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post #9 of 9 Old 12-19-2010, 08:23 PM Thread Starter
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Yup,you are right about that
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