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Post Info TOPIC: MH Motorhispania 125 4T


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MH Motorhispania 125 4T
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Google translator Friends. I have MH 4T 125 Motorhispania at home. Yamaha XT 125 engine. I started to unscrew it to clean the carburetor. After removing the tank, I see that instead of a tap there is something (what is it ??? on the photo at the top metal round) with 2 rubber tubes and 1 wire. The hose is for the fuel gauge, 1 carburetor tube and 2 rubber tubing at the cylinder. What is she for? Is it possible to assemble a regular tap with 1 pipe and do not do this to the rubber between the carburetor and the cylinder? Sorry, maybe these are stupid questions. But I only know old constructions.mh jacy.jpgzbiornik-gaznik podłaczenie m..JPG



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Grandpa Tom

 



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It is a vacuum operated fuel tap. When the engine starts, the suction of the intake opens the fuel valve to let fuel into the carburettor.
If you can find a normal tap to fit the tank, you can. Then block the pipe on the inlet duct.

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O yes! I understand. Thank you very much Simon.

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Grandpa Tom

 



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One more question. There is a Mikuni Ucal carburetor in this MH 125. How to set idle speed? This is a simple carburetor and there is no screw to raise the throttle as in our TTR.


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If you pull the slide out and look down the hole, I think you will see the end of a screw which slots into a tapered groove on the slide. To raise the speed, twist the throttle open and turn the screw clockwise then release the throttle. The slide will sit a bit higher.
To lower the idle speed, turn the screw anticlockwise. This lets the slide drop further.

See how google translate manages that!

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I was looking at Polish Google but there is nothing. I just found in Midlads UK. I see this end of the screw. Thank you.

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Grandpa Tom

 



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Is something missing here? Will it be okay without it?Inkedmikuni ucal 24 (2) m._LI.jpg



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Unfortunately, there is no free spins. The screw was fully threaded, the throttle slightly rose and the engine went out. High turnover is. Carburetor clean. I don't understand what these spells are.

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