1965 cub lo boy

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tractorstuff
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1965 cub lo boy

Postby tractorstuff » Sat Apr 16, 2022 3:52 pm

I have a cub lo boy I've had it for a few years. It looks like it set out side a lot but it ran. I've fixed several things over the years and it has always started and ran good. Yesterday I got it running to move it. It ran long enough to get it out of the building and it quit. No spark checked all the normal things. I've got voltage thru the key switch it turns over I've got voltage to the coil. I went to the local NAPA and bought a new coil and condenser. I installed the parts and it started right up. It ran for a few min. and quit same problem. Any ideas?

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Don McCombs
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Re: 1965 cub lo boy

Postby Don McCombs » Sat Apr 16, 2022 4:03 pm

Check your fuel system for obstruction or contamination.
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Barnyard
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Re: 1965 cub lo boy

Postby Barnyard » Sat Apr 16, 2022 7:24 pm

Welcome to the forum from Cincinnati. A 1965 would not be a number series.I moved this to the regular Cub forum
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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tractorstuff
Posts: 3
Joined: Sat Apr 16, 2022 3:24 pm
Zip Code: 43110
Tractors Owned: 1 '56 cub w/fh 1 '65 lo boy wo/fh 1'39 9n

Re: 1965 cub lo boy

Postby tractorstuff » Mon Apr 18, 2022 6:53 am

my '65 lo boy started up and ran for about five min or less and quit. i was getting voltage to the coil but no spark. i bought a new coil and condenser. it started up and ran for five min or less and quit. this engine has always run good in the past any ideas?

tractorstuff
Posts: 3
Joined: Sat Apr 16, 2022 3:24 pm
Zip Code: 43110
Tractors Owned: 1 '56 cub w/fh 1 '65 lo boy wo/fh 1'39 9n

Re: 1965 cub lo boy

Postby tractorstuff » Mon Apr 18, 2022 10:14 am

My '65 cub lo boy started up and ran for five or less min and quit. I was getting 12 volts to the coil but no spark. I bought a new coil and condenser. I installed the parts. Started it up it ran five min or less and quit. This engine has always run good in the past. Any ideas?

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Re: 1965 cub lo boy

Postby SamsFarm » Mon Apr 18, 2022 10:23 am

tractorstuff wrote:My '65 cub lo boy started up and ran for five or less min and quit. I was getting 12 volts to the coil but no spark. I bought a new coil and condenser. I installed the parts. Started it up it ran five min or less and quit. This engine has always run good in the past. Any ideas?


You said that already! Lol

Don McCombs wrote:Check your fuel system for obstruction or contamination.


⬆️ Remove gas cap and shine a light down in there, check the fuel pickup tube for debris, how is the glass fuel bowl look? Does the brass screen in the fuel bowl need cleaned?

There is a small screen where the fuel tube enters the carburator, that screen clean?

If you remove the pipe plug from the bottom of the carb, does the fuel flow steady out for 1 solid minute with no sign of slowing?

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Re: 1965 cub lo boy

Postby Gary Dotson » Tue Apr 19, 2022 8:02 am

Is your carb IH or Zenith? If IH, there should be a screen in the carb inlet but if you have a Zenith, there is a filter screen in the fuel inlet elbow fitting. I’ve seen those incredibly plugged, in the past. A fuel flow test from the carb drain plug will tell you either way. The fuel should flow an unbroken steady stream of fuel, a dribble won’t do, for at least a full minute.


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