154 Stuck Valves

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Re: 154 Stuck Valves

Postby Rudi » Tue Feb 12, 2013 11:21 pm

Once you get all the valves unstuck, it would be a good idea to adjust them.

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Re: 154 Stuck Valves

Postby telleed » Fri Feb 15, 2013 9:25 am

#1 to seize valves on cub L head engine: Ether
Stuck valves are not too bad.
Prior to restoration, my uncle had tried to jump start the '47 cub and used alot of ether and never got it started.
Because the porting into the L head engine sits in the block atop the pushrod cover and ether like anything else runs downhill, and because the machine was sitting before that, and because the machine did not start(he connected the jump wire to the mag ground lug and burned the wire off the coil, the ether cleaned and dried the valves and pushrods, and they rusted in place. In addition to taking off the side inspection cover, had to pull off the oil pan and head to free them.

1) One good thing is that I saw the engine had never used detergent oil...good to know.
2) The other lesson for everyone out there is: If anyone ever uses ether to try to start an L head cub and do not succeed, make sure you spray some marine fogger or
silicone lubricant into the intake and crank it a bit before letting it sit. If you get back to it, that is fine, but like everything else life gets in the way and tomorrow may be next decade.
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Re: 154 Stuck Valves

Postby BigBill » Sun Feb 17, 2013 12:49 pm

Ditto on the deal i would of grabbed it too.

I use seafoam in the crankcases and gas tanks in all my tractors it's an upper lube. The valves do dry out and stick but with using seafoan it can't happen.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Re: 154 Stuck Valves

Postby tomcat » Mon Feb 18, 2013 7:18 pm

i have also got trouble with my 154. changed points plugs condenser cap rotor adjusted valves changed carb. adjusted timing acording to the book and still will not run any better then it did. need help bad before i go back to drinking. :lol: maybe i need to go back to the valves. tom
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Re: 154 Stuck Valves

Postby Eugene » Mon Feb 18, 2013 9:01 pm

tomcat wrote:need help bad before i go back to drinking.
Start a new topic with your tractor's problem(s).
I have an excuse. CRS.
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Re: 154 Stuck Valves

Postby Boss Hog » Mon Feb 18, 2013 11:01 pm

Eugene wrote:
tomcat wrote:need help bad before i go back to drinking.
Start a new topic with your tractor's problem(s).


:shock:
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Re: 154 Stuck Valves

Postby BigBill » Sat Mar 16, 2013 8:44 am

Add seafoam to the gas tank and crankcase this will lube the upper and lower section of the valve stems and guides.

BTW You stole this 154 with the attachments. Wait till you get her running and mow with it. These are awesome machines too. I love the fcub and the int154's.

I see these in excellent looking and running condition sell for $3,500.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Re: 154 Stuck Valves

Postby Don McCombs » Sat Mar 16, 2013 9:18 am

PM sent.
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Re: 154 Stuck Valves

Postby spgeid » Fri May 17, 2013 8:26 pm

Picture of the stuck valve
DSCN0316.JPG
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Re: 154 Stuck Valves

Postby spgeid » Fri May 17, 2013 8:35 pm

Cant get it loose so out comes the motor, four head bolts sheared at the top of head.
DSCN0314.JPG
DSCN0314.JPG (358.58 KiB) Viewed 199 times
Steve
1962 Cub Lo-boy restored w/60 woods deck and snow plow
1972 Standard Cub Original w/fast hitch w/snowplow
1975 Cub 185
1969 Cub 154 w/60" deck and snow plow
Fast hitch plow
42FH woods mower
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