Antique

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Cleaning the Walbro screen...

Bass1

Yep!

krayzc-RCU

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good deal those pic will help a many rcu out of a bind

Truckracer

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Good job on the pics there Antique! Wana bet whether someone will post a question about where the screen is located within the next several days?? Seems that few choose to do searches or look down the pages of good posts like yours when they have questions.

skip1320

These screens can be decieving,make sure you can see light through it when done cleaning,may look shiny and new and still be clogged,have seen it many time at my work

Antique

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I carefully spray mine clean with carburator cleaner.

flatspinjim

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I can't find the screen in my carb!

krayzc-RCU

My Feedback: (31)

a good thing not to do is put the screen in your hands and use your compressor to blow it off. now were did that thing go

Rodney

I have often had good luck holding the screen in a forceps then holding it in the flame of a match or lighter. It burns the fine stuff off then you can just rinse it off in alcohol or clean fuel. With the advent of so much alcohol in our fuel here in Florida (I think about 10%) I have been having problems with the alcohol attacking the neoprene gaskets and any neoprene fuel lines causing almost instant screen plugging. Since then I have switched to Colman camp stove fuel with good luck, two gallons through so far with no more crap in the fuel lines.

72

Where would you buy new screens if you happen to lose yours?? Hasn't happened yet- but it's just a matter of time....

krayzc-RCU

My Feedback: (31)

72 u could buy stuff here and quite a few other places:

http://www.mfgsupply.com/SmEngCarb.h...on_id=yt6ZAKYa

goirish

Hey where is the screen located? Only kidding. Great pics and they helped alot. I am new to gas so thanks for the info.

hardtop351

i don't understand why you would clog this screen in a walbro carb in a model aircraft airframe. don't you filter the fuel BEFORE its gets to the fuel tank?? i personally remove this filter screen as it blocks very easily....i have had a case where i cleaned the screen...refitted it and it blocked almost instantly on engine startup....this was traced to a faulty filter clunk in the fuel bottle we were using.

cheers
craig

Truckracer

My Feedback: (19)

Hardtop, I think you answered your own question why to leave the screen in place. In your example of screen plugging, if the screen had been removed, all that crap would have been distributed through out your carb ... possibly blocking the small drillings and metering passages. Because you had the screen in there, none of the crud went past the screen.

Agree, fuel should be filtered before going in the fueltank.

krayzc-RCU

My Feedback: (31)

u can filter it going in
filter it going to the engine
filter the vent line

u will get crud

Bass1

I've got filters for my filters and I still get that dreaded crud[sm=48_48.gif] No biggie though, Just part of routine maintenance[8D]

karolh

Absolutely.

Karol

Jezmo

You folks may know this but there is a screen on the other side of the carb as well. It's under one of the little plugs and if it gets plugged up it can make you pull your hair out. Maybe that's what happened to mine; oh well I'm too old to care about hair anyway.

karolh

Didn't know that, but is it easily accessable.

Karol

Jezmo

Hi Karol,
Some have it, some don't but on the carbs I have (I just changed the screen on my DA) when you remove the regulator cover there is a small brass cup shaped plug and it's under that plug. It provides fuel to the high speed needle and if it gets trash in it the high speed will run lean no matter what you set the needle at. If you purchase a walbro kit the new plug and a new screen are in it so you don't have to worry about damaging the old one getting it out.

skip1320

what carb are you using?

Jezmo

Skip, I think it's a WT642 but I will have to look next time I yank the cowl off. Gettin too old to remember these little details.

Correction, it's a WT613 - 201B

eagle flyer1

You may have already answer this question but here it goes. I have a Walbro carb on my 3 mm toc 50cc engine. The factory settings are 1 1/2 for high and same for low. When i give it full throttle it ony goes to about 5400 rpm. It should be at about 7200-7800rpms. When i turn the high screw to richen it up it doesnt matter if i turn it 1/8 or 1 full turn it doesnt do any thing stays the same. I think the carb is dirty could that be the problem. or is it something else..

Bass1

eagle flyer, What brand and size prop are you using? You may want to check this thread out, I believe it's the same engine http://www.rcuniverse.com/forum/m_55...Cengine/tm.htm

Antique

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Eagle, You want to lean(screw in) the high speed needle in order to tune for higher RPM, not richen.