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Do the NAPA filters you used meet or exceed Kubota's specifications as your tractor's warranty requires?

The hydraulic oil going through the HST filter is return oil that is supplying the hydrostat as charge oil and is under pressure, not suction. That is why the filter is sealed differently and is tightened more. The pressure can exceed 120PSI in cold weather which will blow the square seal out.

The adjustment bolts that affect your PTO engagement are #11 in the PDF. The measurement is between the bolt head and the ear of #4. In the picture you posted it appears to be just above the window.

There should be a green 40 amp slow blow fuse in the holder. Kubota part number: 34670-34530

The dual-element air filter assembly is listed in parts as an option. The part number is T0120-93202 for the complete assembly.

Yes

The parts lookup on the dealer's website is Kubota's parts lookup, the dealers do not have their own. If you put L2850 into the search window and click it, you will get the different versions of the L2850. Go the the Right-Hand side of the screen and click the options arrow in line to your...

The seat switch does not control the lights on the dash. Open the hood and look at the Positive battery cable, there should be a smaller Red wire plugged into it at the clamp on the battery. See if that connection is rusted or corroded. That is what supplies the system with current.

Raise the 3-point hitch fully, then lift the 3-point arms by hand to see how much more they will raise before hitting the stop. If they can be lifted more than 3/4" measured at the end of the arm on the rock shaft, they can be adjusted on the LH side.

Jay, the wiring schematics I posted in #2 & #18 are the latest version from the Kubota Link Dealer Portal.

Any part in the parts breakdown listed as #70 is in the seal kit.

I have to go with my many years of working on vehicles part-time and being a large equipment tech for over 45 years with approximately 25 years of servicing and repairing Kubotas. I currently work at a large well know Kubota dealership, we sell and service a lot of Z700 series zero-turn mowers...

I was not there so I do not know. The Z700 series zero turn mower should take no more than 15 minutes to diagnose a no crank or no run complaint. They are that simple.

PSB-2020-034-E-R1 issued on March 16, 2020 It replaces the starter solenoid relay and positive battery cables. It is a Fix when Failure only, and is good for 5 years from the date of purchase.

The wiring on this unit is so simple that a Kubota tech can understand it. Actually, this is one of the simplest wiring diagrams for a zero-turn mower I have ever used. Here is a pdf of both the early and later production units.

Some do, some do not.

Here is the start circuit schematic for a Z725 which I think is the model you are tinkering with. There is no such model as K725.

I think you are thinking the same thing I am thinking.

You have an oil-level check plug in the upper rear of the right-hand axle housing. You fill up to the level check plug by adding 20/50 conventional oil through the breather hose port on the top of the trans-axle.

OIC Lender Services, a division of Ohio Indemnity Company, is a unique specialty insurance company. That would be the company that administers KTAC. It is up to you, the policyholder to file a claim with KTAC who will then contact the dealer you are dealing with. The dealer will take over from...