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Hello all. Just got a low boy 154 that had been sitting for 5 years or so I was told. He said it ran fine prior to buying new john deere with loader on it then he parked it and there she sat waiting on me. Any ways. pulled the carb and cleaned it all up. new seals checked floats etc.... it seems to work fine now. .. Tractor will try to start on dtarting fluid and will sputter like it's trying to start and then it's like it can't spin fast enough to get going or doesn't get enough spark to get going. I check all the plugs have spark.. cleaned and re-gapped plugs to .023 per repair book... check compression all at about 105-112 except one closest to driver seat it was almost 120. New battery, cleaned the corosion from under battery cable end where it attaches to the frame. Now I have noticed, if I let it sit for a few days, and don't know if it's the cold doing it or not, but the engine seems like it gets stuck. I have to turn it by hand with wrench to get it unstuck. Once i do it will turn over no problem. Ohh and it already has HEI unit in distributor so no more points.
Any help would be greatly appreciated as I need to get this off my trailer soon.
Thanks
 

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Hey ..welcome to MTF...stop in at https://www.mytractorforum.com/forums/introductions.72/ and introduce yourself to everyone....... someone with more knowledge of Low boys should come along and be able to add some better insight, but in the meantime did you change the oil?...if the oil has been sitting around it could have gotten thick and contributing to the problem...a few other things to check is the valves and the timing...good luck with it, let us know how it works out
 

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First thing sitting that long, pull the plugs and throw an ounce of Marvel Mystery or similar down the cylinders. Let it sit for a day or so. Then if you haven't yet, change the oil. I'm assuming you have a starter/generator on it? If so, they don't spin with the veracity of an alternator setup. It can be deceiving. I would verify fuel flow from the tank to and including the carb. Check the fuel pump. They have a way of not working after sitting for long periods. You're starting on ether, that's telling. Fuel flow is where I'd start.
 

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Discussion Starter #4
Yeah doesnt really start on either more like sputters like it wants to start. I think I am going to start by pulling starter/generator out and maybe do rebuild on it first. But thanks for info.
 

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I have a 154 and it will never start when it's cold without pulling the choke out until it fires up, nature of the beast I guess. When started it runs perfectly all day long. It starts fine when warmed up. Mine also has electronic ignition. PJ
 

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Discussion Starter #6
Yeah I have tried choke in different positions from full to 3/4 to 1/2 to none. And throttle from low to high and all positions in between. Nothing but sputtering. But thanks for ideas
 

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Discussion Starter #8
ok put new coil, new plugs cleaned and checked carb, and recharged battery. Still spuuters and drops out before firing up. Oil is kinda clean and not all black. Looks like it was changed not long before he put it up. But it keeps getting stuck. Like I have to put a ratchet with socket on the pulley up front and spin engine just a tad and it hard to turn at first. then after I get it to turn it turns over slowly but not real slow kinda half the speed of a car starter i guess is how i'd describe it then it drops off after about 5-6 spins and starts to slow down like something is draining it hard. I am leaning towards two things.... starter/generator and voltage reg. or maybe out of time when owner put in new HEI unit in the distributor. I haven't checked the firing order yet but plug wires are stiff and hard to bend so I figure they are in the right spot. I have a book on these tractors i bought off line. I am going to order a new gen/starter this week and maybe a new voltage reg. too.
 

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I had that electronic ignition crap on my 154 too when I got it, also it wouldn't start, SO,--- I put a good ole point dist. on it and runs fine now. --- These old tractors just don't like that electronic crap!-- They were not designed to run on it.
I would suggest that you check the module To make sure it's not burned out, Don't take much to kill the module!
 

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Also sounds like the unburned gas is starting to seize your motor. Better pull start it, or if by yourself use a big charger set on boost along with new battery. Todays gas will seize a motor in a heartbeat, trust me on that! I had a MD that got stuck after shut down on gas. Don't take long for the rings to stick to the piston walls.
 

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Discussion Starter #11
Woo hoo.. i think we have got it. it ran non stop on either today .. Ok what I had done. i replaced gen/starter because i felt it was slow starting and not giving enough spark. I bought a replacement from DBElectrical.com. Now the gen/starter was almost a direct fit. The only issue was another screw hole in the top that had no screw and the 2 hold down screws for the voltage reg. were further inboard than the original. But I fixed it.. I placed 1 bolt outboard and put a hose clamp around the whole gen. to hold it tight against the body..lol... sometimes you do what you gotta do. Then I tried to start it. and it just turned over and turned over, again and again. So I decided to go back to my roots as auto mechanic and check timing. I found the two timing marks and looked up online that the second timing mark you come to is actually tdc. So I pulled the #1 spark plug and bumped it till i got compression. Rolled it to tdc mark and then went and checked the rotor.... guess what??? it was 180 deg. out. and distributor was in wrong position. I had spark plug boots on the cap making a diamond shape instead of a square. So pulled the dist. and reset rotor to position #1 plug, tightened everything down and test fired it. Boom ran like a champ for all of 3-5 seconds on spray. tomorrow I have to go to tractor supply to pick up a new sediment bowl. I went to put back what they had in there and it stripped out the threads of the housing. I was putting in new line and rerouting it better. Picked up a new belt also and a new inline fuel filter. Can't wait to get it up and running good I have an awesome idea for a 3pt hitch for the back of this if it works out I will post pics, and my decide to build for people wanting them.
 

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The dist. 180 out will do it every time! Glad you found the problem!
My 154 has a factory 3-point on it. -- I never looked at it close but I don't see why you couldn't duplicate the original with some creative engineering!
 
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