104 no power under load
 

Hi guys, searched forum and found some helpful info, but still have few questions.

i just got a late 60's 104, would start and run but not for long. so i put in a new air cleaner, changed oil, filed points and re gapped, cleaned and adjusted carb, tightened head bolts, checked timing, made a new intake gasket(old one was half missing). it starts and runs, sounds good, but as soon as you engage mover deck or put it in first it, it bogs down and will die. the governor doesn't have a spring attached to it so i think that's the problem. i don't see and info on the spring in the service manual that came with it. anyone have a pic of how the spring attaches and are new springs still available?

Not of much help, but want to welcome you to OCC!

thank you sir:beerchug:

:Welcome2:

Yes, new springs are available. You can get them from Kohler, Cub Cadet, online or whatever. Go to the technical section on this site and download a manual. It tells you how and where to install the spring, and what all the different holes are for. If you have trouble finding the service manual, I can post a link. :beerchug:

Welcome to OCC! Congrats on the 104!

I don't have a 104, so I'm not exactly sure about the governor linkage, but here's what the 123 looks like...

Welcome to OCC. Just another bit of information is to check the tension of the belt on your deck to make sure that it is not too much. Make sure that everything turns freely.

Cub Cadet 123

Welcome to OCC.

As mentioned above, go to the tech section and download the manual/s for your machine there will be pictures for just about anything you could ever need.

Also in the tech section there are a couple of good write-up about timing your engine... If you used a feeler gauge to time your engine, you wasted your time.

Without a functioning governor, your engine has no real way to add fuel to the engine beyond WOT - no load setting. So your engine could easily stumble when a load is applied.

My brother has an old Ferguson tractor with a bad governor and it's a fight to keep from killing the engine when doing some bush hogging.

I sold a friend of mine a newer Craftsman lawn tractor with I think a 22 hp engine, but the plastic governor gear broke. The guy that bought it, knew this going in, never fixed it either. He learned his yard and every where he needed to goose the throttle or let off so a not to blow the engine. As fas as I know, he is still using the lawn tractor - LOL

made it back home and messed with it for a few minutes. checked the governor, it's adjusted correctly, and got a spring on it and played with the placement of it. still no go. starts fairly easy but after a few minutes it starts slowing down and dies, like it's run out of gas(but it has/is getting good gas flow). will pop out of the exhaust then start back up, only to do the same thing, apply any type of load and it dies. it smokes like crazy so maybe it's internal?

timing was checked with a timing light as per the manual instructions.

Well, I'd say the carb bowl is running dry. It backfires as the fuel mix goes lean. Pull the carb and fuel tank. Clean them, install new fuel lines and try again. :beerchug:

carb bowl has gas in it, fuel line has good gas flow, good flow out of needle/seat into bowl, float is set correctly. :bash2:

Something is plugged. Or the tank doesn't vent well. Look it over again, I think your missing it. Did you make your own air breather gasket? Maybe you blocked the vent to the carb bowl? :bigthink:

made the gasket from carb to motor, since the old one was half missing. tank vent is fine. guess i will grab new points/condenser and see if that does anything, coil to.

If your going to change all those parts, check Dave Kirks site out for a points saver kit. It makes it a lot easier to time too.

http://www.kirkengines.com/

gas tank cap is the vented type with a hole in the center?

Defective condenser. BTDT

little update:

got another carb off ebay, and after messing around, it made no difference.
cleaned all the crap off of where the condenser/coil mount and it ran a little better.
new head gasket = little better
new points/condensor, and it actually will make it up my driveway in 2nd gear(about 2% grade).
gonna clean the valves when i get back home.

thanks for everyone's help

Thanks for the update!

An easy way to tell if it's starving for fuel is to pull the choke out when it starts to die, if that helps, then you know you've got a fuel problem.

Appreciate the update! :beerchug:

:Announce:

the exhaust valve wasn't sealing. lapped it till i got sick of lapping and it runs now. just cut some of the grass before the rain started, cuts good.

thanks for everyones help:Thanks:

Awesome! Glad you resolved your problem. Thanks for the update....just shows what a little perseverance will do.

Cub Cadet 123

Glad you got it fixed! :beerchug: