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  #1  
Old 11-27-2014, 06:43 AM
yeeter yeeter is offline
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Default Fuel shutoff
Whats your favorite fuel shutoff options for a 149?

It seems I have gas draining right through to the crankcase. Doesnt seem like a good idea to run it this way (duh!). Given that its snowing and this is the only tractor currently able to move snow, Im not inclined to take it apart if I can avoid it.

Maybe a float sticking and allowing gas to run straight through. So:

a) Is it an acceptable 'fix' to simply use a shutoff valve until Spring when I can tear into it?

b) What shutoff valve goes well with a 149?
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Old 11-27-2014, 07:11 AM
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Do you not have one at the bottom of your tank? It should have the Petcock style shut off on it already?
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Old 11-27-2014, 07:22 AM
yeeter yeeter is offline
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Do you not have one at the bottom of your tank? It should have the Petcock style shut off on it already?
Now there is an obvious question that might cause some embarrassment (wouldnt be the first time!).... brb
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Old 11-27-2014, 07:38 AM
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My 149 has a shut off in the bottom of the tank.
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Old 11-27-2014, 08:45 AM
J-Mech J-Mech is offline
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Gas can't get from the tank to the crankcase on that engine. Unless physics have changed and gas can defy gravity by flowing uphill........
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Old 11-27-2014, 09:15 AM
yeeter yeeter is offline
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Indeed there is a shutoff

How can a guy make a post and not have noticed the very thing he was posting about.

J-mech - I will check the oil again. All I know is that if left sitting the gas tank goes empty and it doesnt seem to leak around the tractor. (no puddles or wet spots). Then it seemed the oil level was high (over the fill line) - but what do I know I didnt even see the shutoff.

An overnight test with a full tank of gas should give an answer...
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Old 11-27-2014, 10:56 AM
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Gas can't get from the tank to the crankcase on that engine. Unless physics have changed and gas can defy gravity by flowing uphill........
Because the tank is above the carb and crankcase, it would be good, if you would maybe explain, for the less mechanical minded, the reason why that is impossible.
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Old 11-27-2014, 11:06 AM
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Because the intake valve sits on a higher plane than the carb does. Fuel will run out of the air cleaner first.
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Old 11-27-2014, 11:08 AM
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Intake valve opening is above the carb. Air flows into the carb them makes a 90 degree turn upwards to get into the cylinder so if the float was sticking open gas would run out of the carb through the filter. If it was a KT or a Mag twin then that's a different story.
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Old 11-27-2014, 11:09 AM
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Quote:
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Because the intake valve sits on a higher plane than the carb does. Fuel will run out of the air cleaner first.
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Originally Posted by Sam Mac View Post
Intake valve opening is above the carb. Air flows into the carb them makes a 90 degree turn upwards to get into the cylinder so if the float was sticking open gas would run out of the carb through the filter. If it was a KT or a Mag twin then that's a different story.
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