I bought this Toto mower from a neighbor I was told the mower has not been used. I checked the oil, the oil looked clean and clear almost too clean (like when the engine runs low or out of oil they add new oil after it quits running. I cleaned the carb it had brown powder and rust in the bowel, with the air cleaner removed, on the first pull one backfire, after a few pulls it started with smoke out of exhaust then stopped smoking and stalled. The only way to keep the engine running was to keep the choke closed (with a screwdriver) less than the Vacuum auto choke even after the engine was warmed up it would only runs on a rich mixture, after about 20 minutes it would stay running, when I tried to mow the engine had no power and stalled....when it was running I could hear a sound I have never heard before like high pressure air leak each cycle not constant. Please help, Thank you.
The carb is clean.
What causes the head gasket to fail?
Leaking exhaust gasket I didn't think of that. Between head and muffler?
What engine problems can a leaking exhaust gasket cause, beside the noise?
Thank You.
Because it has been sitting I’ll bet the float level is too low, causing a lean running condition. I would replace the float needle and seat, plus make sure the float is set properly.
I don't know Kohler. The Carb has a metal needle with spring and the seat is metal, I don't see a rubber seat like in a Briggs & Stratton.
The float is plastic. Is something missing?
Thank You.
You know how to look up the UPC code and I don’t. Why should I hate you just because you’re ahead of me in that area. Even though I’m north of 70, doesn’t mean I can’t continue learning. I just wish those that come here looking for help wouldn’t think we are all psychic and just post model and serial numbers. They think a mower is a mower and an engine is an engine.
#11
StarTech
Not really all that hard...You basically just enter the numbers. But I did cheat a little as I did use my barcode scanner for later lookups.
Now since I use a bar code scanner now for my business it is handy to scan barcodes. Right now I got only bar codes loaded but I can add more if I can which format they are in but even my distributors can't tell what those codes some OEM are using on their parts.
Heck if you are still learning you are still alive in my opinion.
As Star pointed out there are no service parts available for the carb, so needle and seat is not applicable to this carb. This service manual may help you out, depending on your mechanical abilities . If you deside that you want to attempt cleaning this carb, remember there are not replacement parts, so damaged parts will require replacing the carb assembly. The main jet is removable, with the appropriate screwdriver. You need one with a straight end to get at it, many DIY guys will grind the taper off An old one they have in their tool box. You must be very careful when trying to remove or you will damage the jet, at with point you will need to replace the carb. After you get the main jet out you can push the nozzle down to remove it. Watch carefully when removing the nozzle as some will have an O-ring on the end others don’t. This nozzle has small orifaces in it which may be clogged. After cleaning and making sure everything is open reassemble the carb, install and test. https://resources.kohler.com/power/kohler/enginesUS/pdf/14_690_01_EN.pdf
If you just want to replace the carb it is Kohler part number 14-853-90 and costs about $45.00. How you proceed will now be up to you.
I understand,
So far I have found Chinese Gaskets and Bread tie as a missing bolt on the engine.
I have ordered a new Carb. What I want to know is the rubber seat missing or is the needle and seat metal to metal?
Every B&S and Lawn-Boy carb I have cleaned had a rubber seat.
Thank you for the part number and Manual link.
Now when I look under the 14 853 49-S notes there is a carburetor repair kit 14 757 01-S superseded to 14 757 03-S which around $15 retail. Just not worth the trouble due the cost of a replacement carb.
I believe this carburetor should have a rubber seat, but not the needle. I could be wrong though. I just recently had a Toro with this Kohler XT675 which had similar issues. In my case, the carb kept getting clogged with debris that wasn't sufficiently flushed out of the fuel tank.
Always make sure you remove the main jet and clean it with a wire/paper clip. It is removable on this carb.
Kohler carburetors are very similar to Hondas, from what I've seen. This is the only Kohler I've had aside from ride-ons.
I think so too, the rubber seat swells and shuts off the gas, years ago, I would take the carb to a local shop and he would use compressed air to blow it out and replace it.
Now I know what I suspected, Mr. fix-it did more harm than good. I have to check everything now. This mower was made in 2012, 11 years old.
replaced fuel line, Carb on order, change the oil, check breather hole and valve,
Thank You.
My Chinese Carb arrived, I installed it and it started on the first pull! I couldn't believe it. I tried mowing it seemed a little low on power
but I don't hear any strange sounds.
The mowing height was set very low, I raised it and it seemed to help.
Do I need to check the flywheel key? What RPM is the engine supposed to be set. Is 30W oil ok?
How do I check compression? The front wheel drive the cable is tied on with fishing line, any way to repair the end that goes in handle?
Thank You.
I have it running, starts on the first pull, Replaced the Carb, carb gaskets, fule line (it was rotten), AND removed the fuel tank and washed it, bought fresh Gas and Sta-Bil.
When I emptied the gas tank into a glass bowel I had pieces of rubber hose, water and dirt.
What RPM is this motor set at?
Thank You.
