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Old 02-26-2011, 06:03 PM
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Default 4hp Kohler k141

Hey guys i have an old Kohler engine. Its a 1962 4hp kohler k141 horizontal shaft engine. Its been outside for years and it was on a vintage kart that i got to restore. im gonna put a honda clone on it instead so i figured id take the motor as a seperate project and try to fix it up and put it on another kart, or maybe even a minibike.

ok down to the business. i have a picture of the motor on my kart right now and tomorrow ill be able to post some pics of it by itself. the pto turns over, theres gunk all over the shaft and the clutch, the carburetor is all rusted up and old, the throttle is rusted shut, the fuel lines are all really old, and the gas tank is full of rust inside and out. those are just some things that i noted on the outside. ive never taken an engine apart so i dont know what the inside looks like or what i have to do.

This is my first time messing with anything thats not elecrric or bigger than a weedeater. so im really gonna need alot of help on this. so basically what i want to know is WHERE DO I START!?!?!?
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Old 02-26-2011, 06:25 PM
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...by desperately trying to lay hands on a service manual- The most valuable and effective tool you can own.
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Old 02-26-2011, 06:28 PM
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is it worth the cost to repair it? i thought itd be a cool restoration but idk wat do you think
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Old 02-26-2011, 06:30 PM
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I would. I'm sure many others would too. If the kart is vintage, it would be worth more (and definitely cooler) with the original engine.
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Old 02-26-2011, 06:34 PM
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Quote:
Originally Posted by toystory_4wd View Post
I would. I'm sure many others would too. If the kart is vintage, it would be worth more (and definitely cooler) with the original engine.
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Old 02-26-2011, 08:08 PM
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ok so things that im gonna need

*New Carb
*New Spark Plug
*New Oil
*Way to remove rust from gas tank
*New Fuel lines
Maybe some internal parts.

Does anyone know a carb that could fit this engine? or where i could get a new one that will work with this engine??
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Old 02-26-2011, 08:46 PM
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Quote:
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*Way to remove rust from gas tank
Anyone else thinking electrolysis?
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Old 02-26-2011, 08:56 PM
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as for new carb. i just looked around but didn't find any thing but rebuild kits. how bad is it?
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Old 02-27-2011, 08:03 AM
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its pretty bad in my opinion. i was gona post a video later of the engine so you guys could get a better idea.. but as for thecarb its pretty bad. could a honda clone carb fit it? or a weedeater carb??
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Old 02-27-2011, 08:06 AM
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Anyone else thinking electrolysis?
whats electrolysis? ive heard about it but never really knew what it was.
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Old 02-27-2011, 08:07 AM
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You could make another carb work, but again, I think it would devalue it. Completely disassemble carb and clean the wee out of it. With enough effort there's a good chance you can revive it. If it's totally shot, well, I guess it's shot.
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Old 02-27-2011, 09:49 AM
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i started to do some investigating and i found a parts website, and a service manual

heres the link to the parts page. http://www.ereplacementparts.com/koh...33_113414.html whats parts from there do i need to buy?? they all seem pretty cheap. the page with the carburetor is page j.
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Old 02-27-2011, 09:54 AM
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You got the manual? Excellent!!! As for required parts, now that you have the manual you can start tearing things down. Replace whatever cannot meet spec.
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Wrench, Wheel, Wreck, Repeat...
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Old 02-27-2011, 09:59 AM
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heres a link to the manual for reference in case any of you wanted it. http://www.asberry.net/files/TP-2379.pdf it takes a minute to load up but its all there.

ill start tearing it down this week when all this snow clears up. ill try to post lots of pics and videos
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Old 02-27-2011, 09:59 AM
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any info on the electrolysis thing??
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Old 02-27-2011, 10:36 AM
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type electrolysis in the search bar, a bit comes up
basically though you want 12-36v charger or car battery, some washing soda, water and a good length of non-galvanised wire. fill the tank with water and a bit of soda, connect the black/negative lead of the charger/battery to the outside of the tank, coil the wire up and put it in through the lid, make sure it isnt touching the edge (could go on a wooden dowell?) and connect the positive/red lead to the wire. you should get bubbles . i would do it in a well ventilated area, and check every 6-12 hrs. replace the wire and water daily, and if you are using batteries, careful not to over-use them. check the voltage if possible.
leave it a few days, and check it out! should work ok.

first off though, i would get some old nuts/bolts/stones and put them in the tank, rattle about for a while, then wash out. this should remove a lot of loose rust.

after you can paint with por-15. i think you could use the starter kit, which is about $20ish and comes in a few simple colours.


Hope that helps
Rob
Edit: for the gas lines, just get some normal gas resistant hose. doesnt need to be kohler brand
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Old 02-27-2011, 10:42 AM
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thanks that cleared up alot
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Old 02-27-2011, 11:48 AM
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Glad i could help
BTW heres the por-15 http://www.por15.com/SUPER-STARTER-K...ductinfo/SSKB/
ask bighead for more info on the paint, or type it in in the search.
Rob
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Old 02-27-2011, 12:28 PM
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I would love to restore that engine.

Find a carb that matches the bolt holes. Something adjustable is a plus.

The most valuable tool ever in restoring engines- the dremel. Get a corded one i hate batteries.
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Old 02-27-2011, 04:02 PM
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****! Just looked at the parts list and they are all really expensive!
Seeing that, I would attempt to revive the carb with lots of wd40, carb cleaner and time!
Make sure all passageways are clear, thin wire is useful for this, and remove as much crap as you can.
I also saw the missing recoil. Are you going to try and find a new one?
I would also take the side cover off and check the internals out, and check for good spark and compression.
Rob
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