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OK, all testing before was done in 4-wheel drive because I leave it there all the time and never thought to take it out. I lifted all wheels off the ground and the rear spin fine by hand, the left foot locker pedal works fine, the front spins freely too but when the 4-wheel drive system is...

Well now it's making a popping and gear crunching noise every few feet that bogs down the pump while its crunching!!! Doesn't matter what gear your in. Does it in Forward and Reverse.

1st off the fluid level is fine, I was out grading my driveway with the B21 and after about 10 min. I was backing up using the bucket to level some gravel and I heard it make a weird popping noise and then the tractor quit moving, pressing the forward or backward foot pedal just made the...

Thanks, I've rebuilt lots of contraptions and been a machinist for 37 years, I think I might try it, where would I find a part # for the factory o-rings?

Care to elaborate on that? Is it better to remove the whole pump and do it on the bench?

I just found this topic that describes how to fix... You CAN repair a leaky fuel injector pump! PICS and a question.

Thanks all, I have line wrenches I can use on them, if that doesn't fix it can I remove the barrel flange and replace the o-rings without removing the pump?

It's started leaking a LOT more now, I didn't have any powder so I tossed some baking soda on it and saw this. I checked the fittings with a wrench and they are tight.

Thanks, I' give that a try.

I've cleaned and watched it start leaking twice, and I see no fuel above the injector body. So I just assume it's leaking at the shim gasket area. Guess I need to check how tight the screws are first.

It's leaking fuel, about 1 drop every 5-10 sec. I'm still using the tractor, I just want to know how to fix it when I get time. So the shims serve as gaskets too?

I have a slow drip and it looks like a leak where the Green arrow is pointing, best fix for this is? Thanks in advance.

Thanks, I was hoping that was the case.

Kubota B21 with BT751 backhoe, a pressure relief valve has rusted to where it's leaking badly on my main control valve, it looks like it may just unscrew and come out, or do I have to disassemble it further to replace it??? And it's strange that one valve rusted badly and the others just have...

For awhile now on my B21 I would sometimes have to cycle the ignition switch ON/Off and back to the glow plug position several times to get the glow plug light to come ON, now it won't come ON at all leading to long starting times, do you think the key switch has gone bad???

OK, last weekend I went to start my B21, I just got a click, I charge the 10 year old battery to 100%, I still get just a click, I try jumping it and just a click, so I clean the terminals, click, I go get the battery checked and they load test it and it's toast, so I buy a new one, take it home...

Well I guess I didn't describe the area good enough, it's not a complete carpet of 1/4" brush, it just has a few of those scattered around but more than I want to pull up by hand. The rest of the area is just tiny brush and oak saplings. And I need to pick up the sticks too.

I just bought my first zero turn, it's a BigDog Alpha 42", exact same as a Hustler Raptor except it's red and has a much better seat!!! Anyway I have 1.5 acre of land that has lots of trees and is about half is covered with light but pretty tough brush, it's about 2ft. tall and 1/4" stem dia...

I bought my B21 in 2007 and just used regular low sulfur Diesel available at the gas station, but lately it seemed to be down on power and it didn't push and scoop dirt as well as it did years ago, so I was reading about the new ULSD fuel and how some older diesels don't like it much and read...

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My local dealer who is also my neighbor is cutting me a good deal on a SnapperPro S50, he has 2 in stock one with the Briggs 26hp and the other with the 19hp Kawasaki, now what would be a better choice? I don't mow thick grass but mostly light stuff and small scrub brush in a 2 acre pine grove...

What's involved? My front wheel almost fell off due to improper screw in studs installed by the previous owner, now the holes are completely stripped and I don't want to heli-coil them or go to the next size so I wanted to just drill the flange for press in studs but as can be seen from the...

Just got through digging and washed off my new to me B21 and noticed a pin on the hoe looks like it moved out about a half inch. I've noticed it move out before when I greased it and I just tapped it back in, now I'm thinking it may be broken, if it is broken is this a common failure? Arrow...

Newbie question, I was looking up the specs on my B21 I bought used and the Kubota website rates it's HP at 2600 RPM, however according to my tach the engine operates at 2800 RPM when I push the throttle lever full forward, is this normal? And that extra 200 RPM sure makes a lot of difference...

I've bought an old B21, only 21 gross HP but with all the torque multiplication going on and 4-wheel drive just how much pulling power can this small tractor develope? I finished digging a rather big stump loose yesterday, now the stump which weighs more than the hoe can lift is going to have to...

I did a search but didn't fine exactly what I was looking for, I just bought a 1998 B21 with 1725 hr's on it and it's my first ever diesel and I've been told to add some additive to the fuel because of the new low-sulfur fuel, what kind of additive can I find at the local auto parts place like...

I'm looking to buy a small used backhoe/loader, a local Kubota dealer has a used B21 model with 1950 hr's on it, I don't know the age but looks like a early model, it runs and drives good, the backhoe is pretty tight, but the paint is pretty faded, it's a little rusty in spots, some of the hyd...