8hp Tecumseh Radio Flyer Wagon

Shuttleworth

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Just cleaned gummed up carb and tank, new fuel filter. Motor will fall on her face if you zap the throttle when hot, won't restart. Running 92 octane Tru Fuel. Also, what is the correct spark plug for this XL 195 150223
SER 0275D. Appreciate any help.
 

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Rivets

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First of all, please DO NOT post two threads on the same problem. It will not get you to a solution any faster and will only confuse things. When you cleaned the carb, did you check and adjust the float level? If you did then I would use this procedure to adjust the carb.
Adjusting a carb

This is the procedure I always taught my students to adjust a carb with two fuel controlling needles.

1. Start the engine and move the throttle control to top speed.

2. Adjust the high speed needle (this is the one under the float bowl) clockwise very slowly until the engine starts

to bog down.

3. Back the needle out 1/8 turn, the engine should now run smoothly.

4. Now move the throttle control down to idle. If the engine stalls out turn the idle speed screw in one full turn,

restart the engine and bring the throttle control down to idle. If the engine is running to fast, turn the speed

screw slowly out until the engine seem to want to die and then in 1/8 turn.

5. Now with the engine running, adjust the idle needle out until the either gains in RPM's or starts to bog down. If

the engine gains in RPM's, continue to adjust out until the engine starts to bog down. At this time turn the

screw in 1/4 turn. Now the engine may be running to fast, so turn the idle speed screw out until you get an

RPM you like.

6. Now you must repeat step 5. If the engine bogs down right away turn idle needle back in to your starting point

and go to step 7. If it speeds up, repeat step 5 again.

7. Turn idle needle in until the engine bogs down and then out 1/8 turn.

8. Now the engine should run smoothly at all speeds.

9. To check, set the engine to idle, then quickly push the throttle control tohigh speed. If it dogs and does not

come to speed, open the idle needle 1/8 turn and repeat.

10. Set to go.



There are 2 reasons I have it done this way is, first the high speed needle controls the fuel going to the low speed circuit and second is that the idle needle controls how much fuel is used when going from idle to high speed. You should also review the section in the manual I posted before starting this procedure.

If this procedure doesn’t solve the problem then I would remove the carb and clean and rebuild the carb with repair kit #632347.

Needle and seat replacement.

Remove the carb, and then remove the float bowl. Check the float bowl jet (which is the bowl screw) and make sure the jets both horizontal and vertical are clean and open. Tip the carb upside down and remove the float pin and float with needle attached. Look in the float needle passage and you should see the red float seat at the bottom of the passage. This is where a #5 crotchet hook would come in handy as you need to remove this seat. If you have no hook, but compressed air, you can blow through the fuel inlet and try to pop the seat out. Put your thumb over the passage to prevent the seat from flying who knows where. No air or hook try bending a stiff paper clip to dig the seat out.

I would either give the carb a good 24 hour soaking or have it ultrasonically cleaned at this time.

With the seat out clean the passage way with carb cleaner. Now you must find a drill bit slightly smaller than the passage way, to be used to press in the new seat. Apply a very, very small amount of a very light lube to the new seat. 3-1 oil or lighter, to help seat it better. Carefully insert the new seat in the passage way with the rings on the seat down toward the carb body. Slowly and carefully force the seat down with the back end of the drill bit. Once it is seated, check to see that it did not flip and the rings are up. Next check to make sure that the float does not have any liquid in it. If it does, replace. If everything looks correct, attach the new needle to the float and install with the float pin centered. It everything is correct, the float should seat level to the carb body, when looking at it upside down. If everything looks good reattach the float bowl, making sure that both the bowl gasket and the nut gasket seal properly. Reinstall on the engine and test unit. Remember to have patience and take your time. Good luck, but I don't think you'll need it.

PS: On the side of some Tecumseh carbs you will find a plastic cover. Under this cover will be an idle jet. Remove it and check to see that the jet is open both horizontally and vertically. You should be able to push the old float needle wire through the vertical opening.
After cleaning and rebuilding you will then have to go through the adjustment procedure again. Here is the Tecumseh service manual.
 

Shuttleworth

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Thank you.
Yes, adjusted float to stop/seat at 7/32 to .210 , I saw that dimension on you tube. I'll tinker a bit more on the old girl when I can, a carb kit will be next step of I can't prevail.
 

Shuttleworth

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Sorry new to forums, thought I put one under Tecumseh and one under Snapper, which next is to make her faster. I'm in a 55 an older community now. Got to make Snapper drive train a bit fast, close to golf carts would be nice. Hauling kids is over, now I got to keep up with the oldies ?
 
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