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Discussion Starter · #1 ·
I bought this mower used early this summer. It has been great had 146hrs when I bought it. Well Saturday I was mowing and quit for the night everything was fine. Filled her up with gas and went to mow Sunday and it runs fine except when it gets into the grass to cut it bogs way down and won't hardly mow. The grass isn't real tall and I mow on high on the deck setting. I went to the grass I cut the day before and dropped the deck down to 5 and same thing boggs down and won't hardly pull itself along. Keeps cutting and the deck is well greased. I don't know where to start? Thanks for any help. Chris
 

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It sounds like something is up with your govenor, maybe a spring broke or came off. you can see them from the side, below the carb, by the exhaust pipe.
 

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Could also be your fuel cap vent got clogged when you put in more gas. Leave the cap cracked open a bit and try mowing the same area in the same way. If it doesn't bog, then that's your problem.
 

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Discussion Starter · #4 ·
Not the fuel cap. I tried that even took it off, Still bogs down. I don't know if a spring is missing because I don't know how many are there? I am going to get a new fuel filter and plugs. I don't know what else to do?
 

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chicks mow my yard...
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x2 on the governor. go to cub cadet online, and look at the parts break down for your model. kohler has parts illustrations on its website as well.
 

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Their are 2 springs on the govenor. One is a short one, made of thing wire, and the other is a little longer and heavier gauge wire. Their are 2 levers. The small spring is the upper spring, it goes to a fixed bracket and on the top hole of the lever that moves. And the lowe lever is usually in the top hole, or the next one down, of the 3 holes on the moving lever.
 

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if no joy on governor and yer engine is a twin, might chk to see that both cylinders are firing... those twins can start/run with no load on one cyl...
 

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I think your first step is to pull the carb and clean it, then try it again, before going deeper, IMHO. Unless you see something obviously broken then replace that part. Cleaning the carb will cost you nothing but a little time and some carb cleaner, but will not hurt anything. After that, then you start digging deeper, IMHO.

My dad always told me to start with the easy stuff then dig further, took me a while to learn that, but that's my method.

Paul
 

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Discussion Starter · #9 ·
I drained the gas put in different gas and new fuel filter. How do I tell if the cylinders are firing? I will clean the carb too. Both springs are on the governor.
 

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I drained the gas put in different gas and new fuel filter. How do I tell if the cylinders are firing? I will clean the carb too. Both springs are on the governor.
Pull a plug wire off and start it up, try it on each cylinder. If you don't notice a difference, you have a problem with that cylinder. It may be worth taking the valve covers off and inspecting in there, for a push rod problem or valve spring issue.
 

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Discussion Starter · #11 ·
Ok update. When tractor is running and I am sitting on it and you pull the left plug wire off nothing happens, when you pull the right one off the tractor dies. put new plugs in and same thing happens. The left side is getting fire you can see it in the plug wire and it shocked me. So now what? This isn't looking good. Hope I don't have to take it to the dealer.
 

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The left cylinder is not firing. Pull the valve cover and see what's going on. Another way to find a dead cylinder is to see which cylinder is blowing cold air from the cooling fan.
 

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Discussion Starter · #13 ·
What am I looking for when I pull the valve cover? And is it the square black thing tha says ohv on it? I assume it is and that stands for overhead valve. Sorry don't know much about small engines. But I can work on stuff. Thanks for the help.
 

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What am I looking for when I pull the valve cover? And is it the square black thing tha says ohv on it? I assume it is and that stands for overhead valve. Sorry don't know much about small engines. But I can work on stuff. Thanks for the help.
Yes remove that cover, their are 2 roker arms and each will have a push rod under onside of it. And the other side is over the valve. You rae looking for a rocker arm that is off a push rod. or, even a bent push rod. You could take both plug wires off and have someone crank the engine over and see that everything is operating properly.
 

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What am I looking for when I pull the valve cover? And is it the square black thing tha says ohv on it? I assume it is and that stands for overhead valve. Sorry don't know much about small engines. But I can work on stuff. Thanks for the help.
It's sort of like looking for pornography. It's hard to define, but you'll know it when you see it.:trink40:
 

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Discussion Starter · #17 ·
Ok got the cover off and. A bent push rod! Little sucker was sticking out there like a middle finger at me. So what are the steps to put a new one on? Do I take the rocker arm off or just unscrew the little seat thing? Thanks again guys I will call cub and see if they have one instock if not guess I will call kohler. Thanks
 

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Discussion Starter · #19 ·
Thanks for the link. I can't get it to bring up the manual, probally my bad internet I will go to the mil house and try it there. Thanks
 

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The left side is getting fire you can see it in the plug wire and it shocked me.
make sure that the plug wire is not damaged and causing the spark to "leak" out. a bad boot or cracked wire will sometimes let the arc find another ground. pretty easy to check, just fire up the mower when its dark and look for lightning.

if it's not the boot or wire, then yes, you have valve problems. hopefully it's just the rocker got loose and slipped off the pushrod. however, i have heard of the ethanol gas (very prevalent these days) going sour very quickly. when this happens, it will build varnish around the valve stems and the valves can get sticky. when the valve sticks, it can do bad things like bend a pushrod...
 
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