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Carlos VB

312 -8 Carburetor tuning

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Carlos VB

Hello......

 

After many problems, electrical, etc. WH runs......BUT!

 

no well, I mean when I asked gas to the Throttle I "flood the engine"...

I have screwd and unsccrew the two screws trying to find the way, but nothing.

While it is idling no problem, even moves at low speed well, but when I pull the throttle... and also a little bdark smoke.

 

 

Help please

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pfrederi

2 turns on the high speed (large one on top) and 2-1/2 turns  on idle (smaller one) should be starting point.  Also have you checked your float level  11/64: between float and housing

set.JPG

set1.JPG

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Carlos VB

 

 

AT WALBRO helped me to identify the carb the reference on the carb is  WHG 022677

So I asked the gasket in UK the sent it to me (third file)

 

Somebody told to me the Bowl Gasket is not the proper one... ¿¿??

 

 

I´m trying to clarify this point.

Posible Junta de goma 2.jpg

Posible Junta de goma 3.jpg

Junta actual.jpg

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Carlos VB

 

It is a 312-8 WH , with a Kohhler Magnum 12.

 

On the picture the two screws....

Screws on tne carb.jpg

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Carlos VB

And this is the other side   :wacko:

carburador .jpg

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pfrederi

Sorry I thought you had a Kohler carb.  No high speed adjustment on a Walbro...that is why i do not like them.   Small screw is idle speed.  Larger is idle mixture.  You say it idles OK then most likely problem is then caused by float setting  or dirt in carb.

 

What you have in your hand is the splash shield you need that and the thin round bowl gasket (in plastic bag))  As far as I know the gaskets are the same Walbro and Kohler

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Carlos VB

It is supposed everything is clean from tank to carb, new petrol filter, new air filter.... 90 € spent, and the same.

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Anglo Traction

You have the wrong Service Kit for your Walbro Carb. It should be 25 757 11-s. You do not require the flat Gasket (with Baffle) from the wrong kit.

Your Carb Part number should be stamped on the Flange and should read something like these-

45 053 79,  45 053 80,  45 053 81,  45 053 82,  45 053 83,  45 053 84. see extract from Kohler Manual below-

 

Walbro.JPG.6f800876bb436f8645b445d1e16fdd75.JPG

 

The IDLE Mixture Screw should be opened/set at 1 and 1/4 turns from gently closed as a preliminary setting.

Run engine for 5 minutes to warm up, then follow the Kohler Manual procedure below-

 

5b2ff6febe562_Walbrosetting.JPG.c9a745f6494abc92f3d34769b2b17707.JPG

Hope this helps. 

 

  

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