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Be sure that the crank, cam and other bearings are still good. If not then look on Ebay or etc.

I have had people bring in mowers that refused to start in the spring due to too much stabilizer. So follow directions! Dry carbs tend to flood the engine in the spring. So keep doing what you have been doing.

Over the years the gas formulation changes and is not good for diaphragms and other rubber parts. Floats are the way, IMO. Possibly affixing a suction type carb that does not have a diaphragm will work???

Perhaps the new switch is defective or the wiring is bad. The kill from the reverse is working so tie into that wire with another toggle or push button switch back to ground. Or get a wiring diagram for your model # and track and test each wire and component.

I agree!

I would put it after. Any debire in the tank could keep the valve from closing off completely. The filter should trap it!

The only thing I can come up with is maybe a leaky porous casting around the intake valve or the intake manifold itself. Carefully see if one cylinder is running much cooler then the other. Or use an infrared thermometer. The cool cylinder is most likely where the issue is. Reading more comments...

Gray oil is from water. Maybe some was in the tank or can used to fill it. Also if left in the rain or spray.

In my experience that happens with small trimmers and blowers, ect. The opposite is what I see. The engine running creates a vacuum and quits from fuel starvation.

What about a mulching blocking plate? If used in hi grass that may cause that. Also check that the blades are not up-side-down. Sharp edge must be lowest!

Try another spark plug .Check for spark if that don't fix it.

The plastic over time warps and lets too much fuel past the diaphragm and gasket. Ebay or Amazon sells those inexpensively.

Try using an inner tube.

When I first read the problem my 1st thought was try another plug. Maybe I am a little psychic or psycho?? Then thought of other reasons. Conclusion was excessive grass build up. That has the same effect too. So. If another plug don't work it may be the cleaning that does.

Must be the compression release cam or bearing worn or bent. Make sure the valve actually raises b4 top dead center when turned slowly by hand.

E-15 is a 15% alcohol blend. It does bad things to rubber and some plastics. That new carb may have a now bad float needle or seat whichever is rubber. The fuel supplier may have changed their formula. Find a supplier that still has a special pump that has 100% gas. Carb may have to have new...

Could be the fuel shut off solenoid if it has one.

May be breather valve. Try temporarily disconnecting the breather tube. Or may be a warped head allowing oil to get sucked in.

It is likely a flat plug with a hex socket hole. Scrape the dirt and grass off near the oil fill area. To drain the oil I usually top the mower up 90 degrees into a pan.

You mean by the throttle control being all the way past fast? The choke is usually operated by a wire coming off the speed control arm that only activates when past full throttle. You may have to get a different control plate and the right activator wire.

Perhaps the camshaft is bent from when the rod broke. I put it in the base hole and turn it to see if it wobbles. And make sure the base hole is not cracked.

Or small air leak in the line. Also be sure there is nothing in the tank that can float over the gas outlet blocking the flow.

Could be wiring or the charge coil under the flywheel. Or could be the starter solenoid.

Likely problem is defective decompression system. Old side valve engines had about 9 to 1 compression. OHV has much higher. Instead of putting on a stronger starter and bigger battery. Manufactures chose to add decompression schemes. Valves must be adjusted after the decompression part of the...

If it ctanks slow and hard then check the decompression system. If extra fast then valves or blown head gasket likely.

Sounds like valve clearance is too small. I adjust it .001" looser so it takes longer between adjusts.

I have a 130902 vert. and can not find any data online for the base mounting bolt pattern. Three holes are the same as the standard push mower. The 4rth hole is somewhere between 30 and 45 degrees from center line. Another bolt pattern that I can't find is that of the Toro TNT type...

I am fixing up a 14" Toro snow blower because it is light weight and free. I put on a float type carb and gas shoots out of the vent hole. I know there is an extra spring on some 2 cycle floats. Has anyone had any experience in converting these older red ipaddle types to float carbs? I...

I have been repairing small engines as a small home business since 1983 due to a bad economy and being laid off back then. I have gone back into it more since being laid off in 2009 as a boat mechanic and needing to supplement my SS I had to take after unemployment benefits ran out. I found this...