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Neither one. Super UDT2. Kubota suggests Super UDT2 in ALL GST transmissions. My experience is that it's considerably smoother in clutch pack engagement than 303 or anything else for that matter.

I'm assuming the lift pump has been tested. That's the little mechanical pump below the main injection pump. Should have good output. You'll know if it's dead. Symptoms of a dead lift pump are low/no flow and sometimes fuel in the crankcase. If you get good fuel TO the main injection pump...

Depends on what "specs" it meets. I haven't found a single fluid on the market (yet) that compares to super UDT2. And I've tried several. UDT-different story. UDT is regular UDT. Mineral based. In HST's, super UDT2 is noticeably quieter, and doesn't run quite as hot, as regular UDT does in...

The key switch is toast. Dealer should replace it. IIRC, there is a new part number which tells me something is different about it. If it's less than 2 years old, warranty should apply. Dealer may or may not be able to duplicate the issue so they might give you some grief about it. If they...

Pto switch is back behind the PTO lever, kind of in front of the tire buried up behind everything. Where it lives, is usually full of clippings and is why it many times gets to acting funny. I'm assuming it's an older 331, as they had an external fuel stop solenoid, on top of the engine (big...

If it's going to sit, and the current fluids are in good shape, just do it next season. Reason being that if any moisture were to build inside the system from sitting, it'd be a shame to have to drain all that brand new oil out next season.

Have seen some mist buildup on the M40 series, but never the M60 series....but they are still sort of new. Does the transmission area get real hot? Max temp should be 100° above ambient. So around here, about boiling during the summer. And if there were any moisture in the system, it would...

Been a while, but IIRC, the pivot point is dry, meaning it doesn't contact any oil. If you're seeing oil there, it may be a good time to pull the axle out of the tractor (it isn't that bad) and have a looksee. I do remember seeing one that was cracked, but that tractor was used for stuff that...

Not unheard of. The cylinder is leaking. If tractor is less than 2 years old, have the dealer replace it under warranty. They might try to rebuild it, but Kubota will buy a new one if they submit a preapproval. They aren't that expensive, at least at the dealer price (which is what Kubota...

I have been around a few of these...B2400's, B2100's, B7300/7500/7510/7610, etc. Few of them, owners thought it would be a good idea to crank the pressure up on the hydraulic system, not knowing what they're doing. It's really easy to do in all honesty, and makes the FEL work great. BUT the...

They don't have a release for the HST. Why? Because the mower is HEAVY, and you couldn't push it anyway. You can move them, slowly, with another mower or something but go REAL slow, like slower than a snail's pace. You bypassed the wrong terminals. Check the PTO switch. They get grass...

Real easy to put more money into these old mowers than they're worth. And to add insult to injury, many parts are being obsoleted. T1600's used their own transmission. To my knowledge, no other Kubota used that trans. If that's the case, look for the parts to become NLA sooner than later :(...

Look around, I seem to remember them having a slow blow fuse down by the starter somewhere.

Usually the HST pedal switch, aka neutral switch. Located under the steering column. So easy to fix it. It makes no sense to me to bypass them, and actually the way the system is designed, you really can't bypass all of them because they all work together. One has to be off, the other on...

Tell your buddy to get rid of that headache. The GR2000/GR2100 were horrible as far as transmissions go. Not all that hard to work on, IMO, but I remember working on numerous. Far more than the G2160 that it "replaced". I assume you're looking at replacing the charge pump? Or the entire...

The pin fits the bucket and cylinder with very little tolerance. I'm going to say .005" maybe less. But because of the geometry, and the fact that the little BX only has ONE bucket cylinder, a tiny bit of slop in the pin and/or hole can cause a lot of play at the end of the bucket, especially...

If black smoke is present during the bog, look closely at the air filter/air intake system. If not black smoke, look at your fuel system, specifically the supply side (tank to lift pump). I like to do a flow test. Easy to do. Rig up a nurse tank and connect it to the injection pump's inlet...

So you're seeing oil coming out of the bellhousing/clutch case? If that is where it's coming from, the only way to diagnose/fix is to split the tractor and have a look-see.

IIRC, the hydraulic block has a slotted screw in the middle of it. Make sure it's turned all the way one way or the other. One way turns it off, the other turns it "on", but it needs to be fully one way or the other, not in between.

Yes, exactly! Especially on the standard "L" series (L2800, L3400, L4400, L3200, L3800, L4600, L2501, L3301, L3901, L4701). The standard L's have a direct mechanical link from your foot pedal to the transmission, so you get a great "feel" but you also get the opportunity to put more pressure...