Toro dingo dingo 420 ignition switch.replaced wont stay running

Based on the information you've provided, there are a few possibilities for what could be causing the issues with your Toro Dingo:

Engine damage: Running the engine with very low oil can cause serious damage to the engine, including wear on bearings and pistons. This can result in a loss of power and difficulty starting. If the engine is damaged, it may need to be rebuilt or replaced.

Hydraulic system issues: The low hydraulic oil level and small hose leak could be causing issues with the performance of the trencher attachment and other hydraulic functions on the machine. It's possible that the hydraulic pump is not getting enough oil, which could cause a loss of power.

Fuel system issues: If the machine was running on low fuel, it's possible that debris from the fuel tank could have entered the fuel lines and clogged the fuel filter or injectors. This could cause the machine to stall or run poorly.

Given the symptoms you've described, it's difficult to determine the exact cause of the problem without further diagnostic testing. If you're not able to perform a compression check or other diagnostic tests yourself, it may be best to take the machine to a qualified mechanic who can perform a thorough inspection and provide an accurate diagnosis. They can also perform any necessary repairs to get the machine running smoothly again.

Request the wiring diagram from Toro.

have you greased and oiled the machine, changed the oil. it sounds like the oil. the oil pump start to fail, causing metal to metal reaction,

Best way to check that out is to run it for six or seven minutes and see it the number changes by .1 and if it takes an hour of running to move the nkmber you will know that it reads hours nit tenths.

starter motor i would suspect. try hitting it with a hammer to jar it into life. im sure its the starter motor.you could try running a positive from the battery to the positive on the starter motor to see if it turns if it does not replace srtmotor

you have a dingo, ugh
I would suspect a bad pump or wheel motor if the rpms are set correctly and no safety switches are causing it to die...

replace the key switch then...

You've found the right place buddy
I keep buying manuals from various websites so I can damn well help u in this..
what chipper is it btw? Like few websites have some manuals better while some have other brands better

One of your hydro pumps are seized. this is causing the engine to stall when ever the torque is transferred to the pump. There are the small pumps (or final drives) under the engine. One or both need to be replaced

Here is diagram.