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Farmall & IHC Tractors Discussion Forum
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farmall A valve timming setting

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Tractorfrank

07-25-2005 09:59:49




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Can anyone help I'm stuck. I've rebuilt the engine and haven't been able to get it running she pops but wont fire. My books don't tell me how to set the valve Just says .014 clearance and where is the timing mark on the casing. Found it on the flywheel.

Thanks Frank




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tractorfrank

07-25-2005 12:19:47




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 Re: farmall A valve timming setting in reply to Tractorfrank, 07-25-2005 09:59:49  
Thank you all she fires right up now after sitting for 10 years in the trees



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scotty

07-25-2005 11:26:52




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 Re: farmall A valve timming setting in reply to Tractorfrank, 07-25-2005 09:59:49  
TractorFrank, Find the scribed line on your flywheel. Mark it with a white marker. Remove your #1 sparkplug. While your helper hand cranks the motor over slowly put your finger over the plug hole until you feel pressure coming out your now on the compression stroke. Keep rotating the motor until your scribed line is in position on your flywheel. Remove your valve cover. Adjust #1, #2, #3 and #5 valves to .017. Now hand crank your motor 1 revolution and adjust #4, #6, #7 and #8 the same way. Rotate your motor 1 more revolution to bring you back to TDC. Remove your cap on the magneto, your rotor should be pointing to the #1 plug wire. Hopefully this will help.

scotty

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Red Dave

07-25-2005 10:07:25




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 Re: farmall A valve timming setting in reply to Tractorfrank, 07-25-2005 09:59:49  
Not sure what you need.
The timing mark on the flywheel should be lined up with the pointer on the inside of the cover that goes in front of the flywheel, just behind the oil pan.

You probably have the spark out of time. Set the valves at .014 clearance hot. I usually set them at about .016-017 cold, then fine tune after the engine is warmed up.
Does that help, or did I miss the question?

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tractorfrank

07-25-2005 10:18:12




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 Re: farmall A valve timming setting in reply to Red Dave, 07-25-2005 10:07:25  
I'm not good at valve setting. When should the cold setting be done. IE at top dead center after the compresion stroke? or when?

thanks frank



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Red Dave

07-25-2005 10:47:10




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 Re: farmall A valve timming setting in reply to tractorfrank, 07-25-2005 10:18:12  
Yes, at the top of each piston stroke, when both valves should be closed.

One of the manuals I have has a chart that shows which valves are closed at the same time, but I don't have it here.
You can figure it out pretty easily if the sparkplugs are out.



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Bob

07-25-2005 10:06:38




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 Re: farmall A valve timming setting in reply to Tractorfrank, 07-25-2005 09:59:49  
You time the valves by matching the marks on the timing gears.

The SPARK timing mark on the flywheel indexes against a scribe mark at the edge of the timing hole in the "bell housing".



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Illinois Boy

07-25-2005 11:29:38




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 Re: farmall A valve timming setting in reply to Bob, 07-25-2005 10:06:38  
OK - I don't know much about this, but seems a shop class I took stressed TDC on compression stroke of number 1 cylinder is the place to start.



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