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Discussion Forum
Show Parts for Model:

$350 Cub Starting....... Again.

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Stan

11-09-2000 18:41:54
12.87.65.114



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What might have happened ?

Tractor did not run when I bought it. Original owner was part way through a 12 volt conversion. I finished it with the help of Bob Mís article. The tractor turned over fine but did not start. I didnít really expect it to but it would have been nice.

With the advice from additional posting from this site I have put in new plugs, wires and checked the compression. Lowest is 60 highest is 80. I know this is low but a least there is compression. I also thought maybe because I was testing a cold engine I might get higher readings when it was warmed up. More wishful thinking ? I have not gone through the distributor yet only because I have a good spark from the plugs. I tried starting the tractor again with the new stuff and it still didnít start. Smelled like a flooded car so I took out the plugs and they were wet and I mean wet. Let it dry out for a while tried it again and it sounded like it tried to fire just for a second. Added a little more gas but the battery went dead. I assume from cranking and itís not new.

With renewed ambition from a close call I took the air hose off the carb and all the gas I had added came pouring out. I took this as good news thinking now all I had to do was fix the float to stop the gas overflow and Iíd be in business. Took the carb off and apart and the float needle was stuck and the inside of the carb looked like it had been filled with water and crudded up. Cleaned it out reinstalled poured in new gas pulled the rod it turned over several times and then acted like the battery went dead again. I didnít think this was possible since it had been on the charger all night.

I don't have a crank so I tried just to roll it over by hand (SWITCH OFF) and now I have a new problem. It will turn only so far and no more. I tried working the fan back and fourth to loosen it up but it seems like it just stops turning in about the same spot. Put the tractor in gear and tried to roll it to try and move it further but no luck.

Not wanting to do any further harm. What could I have done and where would be the next place to look for a problem.

Sorry for the long post just wanted to give some history.

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Bama Binder

11-10-2000 07:36:27
206.5.110.15



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 Re: $350 Cub Starting....... Again. in reply to Stan, 11-09-2000 18:41:54  
It sounds like you are in the hunt, but based on the last info on your post it sounds like the engine is now stuck somehow??? If so, that and your battery appearing to be low on juice may be related. It sounds like maybe the starter drive is hung up on the starter ring gear. If you think this is possible, loosen the starter and move it aroung...this may unstick it. You may also have some missing teeth. Just my thought.

When you get this problem straight, you should be back in action. Your semi low compression MIGHT improve with time, especially if the engine has not run much lately. Running it will loosen up sticky rings and valves. I got my Cub from 0 compression on 2 cylinders to about 90 across the board when hot (which is how it should be tested). So once it is running again, keep working it...BB

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Raymond

02-07-2002 11:47:48
141.211.78.204



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 Re: Re: $350 Cub Starting....... Again. in reply to Bama Binder, 11-10-2000 07:36:27  
We have a Cub which we could not start. I fiddled around with everything. Finally, I got it to where it was stuck like you describe. I got a guy to rebuild the engine (okay, so I'm a moron and did not do it myself). The guy found a screw in one of the cylinders. Somehow there was a screw by a spark plug hole, and when I had the plug out it fell in. The engine could be turned a little each way just as you said about yours, and then it would stop dead.

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BUZZ BRUCE

11-11-2000 06:43:49
208.131.247.156



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 Re: Re: $350 Cub Starting....... Again. in reply to Bama Binder, 11-10-2000 07:36:27  
BAMA I AM INTERESTED IN HOW YOU CHECK THE COMPRESSION HOT, WHEN YOU HAVE TO TAKE THE GAS TANK OFF TO GET TO THE SPARK PLUGS.

THANKS BUZZ



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Farmall Paul

11-10-2000 07:25:12
209.134.65.162



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 Re: $350 Cub Starting....... Again. in reply to Stan, 11-09-2000 18:41:54  
Stan-I read your post and wanted to comment. First, all you need are fuel and spark to make this one run. You said you had good spark, so its time to get the right amount of fuel. Here's what I would do:
1. Pull plugs.
2. Shut off fuel.
3. Shut off switch.
4. Crank for awhile without plugs to clear excess fuel.
5. Let set overnite (patience). Charge battery.
6. Reinstall plugs.
7. Open fuel.
8. Open choke. Throttle part way open. Don't prime.
9. Should run. If not close choke slightly, or go back to carb and rebuild.
I hope I didn't get to carried away, the point is you only need fuel and spark, but you need the right amount and at the time. Good Luck! Paul+

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JLE

11-10-2000 04:32:38
12.76.115.191



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 Re: $350 Cub Starting....... Again. in reply to Stan, 11-09-2000 18:41:54  
BE DAMN careful, gas will fly every where, a little spark and good bye cub. Just aword of caution. Jim



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RAW in IA

11-09-2000 19:42:09
206.28.170.217



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 Re: $350 Cub Starting....... Again. in reply to Stan, 11-09-2000 18:41:54  
Sounds like it may have sucked too much gas into the engine and now you have a case of hydraulic lock. Take out the plugs again and see if it turns over. My Cub float valve leaks alittle so I have to turn the gas off when I shut it off, but it doesn't flood that bad. If the float valve is still leaking, and the tip is a steel one, you can take the float off and gently tap on the float needle with a light object like a screwdriver and it may seat better. Helped mine.Hope this helps.

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