I am going to remove engine and either repair or replace depending on what i find, any tips on removing engine from s130, thanks, Rob
I have done an engine job on my S130, so I can offer the following first hand advice.
Pull the harness at the firewall connector, tie remaining portion to the side.
Pull the starter, label fasteners and store.
Pull the drive belt cover(left hand side when facing motor), paying attention to the spring clips that like to go "boing" and shoot in untraceable directions.
Loosen tensioner pulley in between flywheel and hydraulic pump, remove belt, replace tensioner when belt is off so you don't loose stuff during storage.
Clamp fuel line before filter, remove and set to the side.
Remove filter assy, providing access to the hidden fasteners for the rear most mount on the right side.
Block flywheel and remove flywheel bolts.
Remove air cleaner housing and inlet tubing, set to the side.
Remove the muffler, the clamps are off the shelf clamps so you can cut/break and replace from the auto store. Cut the tubing if need be, but don't damage the muffler, these are special order and often backordered. To ease re-installation, expand the muffler inlet by driving in a trailer hitch ball.
Remove the water lines going to/from radiator and set to the side. There will be a long metal tube on one of them. Pull the whole tube if you can reach the fastener.
At this point, all that is left are the motor mounts. The set to the rear is VERY hard to access, but it can be done and takes longer to get than all the rest combined. You MAY be able to get a socket on the upper bolts, but the lowers will require a box wrench. You might be able to get in a flex head ratchet wrench if you take time to clean the accumulated dirt from the area around the mount. You will have to pass the head thru a hole in a plate to access the lowermost bolts and a conventional wrench can only do 1/8 turn at a go. You will need someone small, but strong and patient to break them loose, re-installation is much easier if you clean and lube everything up.
It would also be a lot easier to get at this mount if you pull the head first.
The output side of the motor is thru bolted to the metal flywheel surround. Pull these 8 or so bolts last.
The rearmost mount(closest to the door) is easy and should be self explanatory.
I pulled the motor, head off, by hand out the rear door and slid it on to one of those harbor freight hydraulic lift tables I set to match the height of the machine. I reinstalled using a similar method. A conventional cherry picker will not work without modification because the spread of the feet hit the wheels and you can not get the hoist in deep enough to grab the motor. If one were to remove the tires and block the machine from the center of the gearcase using heavy timber, a standard engine hoist would probably would work just fine. The ideal tool would probably be one of the Genie Lift pallet lifters you can get at the rental store or a small forklift if you have such things.
On the motor dis-assembly, the crankshaft main journals are 2 piece journals that you assemble while the crankshaft is OUT of the motor. When you take them off, you need to label both the journal orientation, as well as location. They are a thousandth or two different from one end to the other and if you mess up the order the crank wont go back in right.
When you go for parts your local kubota tractor place will be lost unless you can bring them part numbers to look up. Kubota contract agreements with bobcat won't allow the Kubota Ag brand dealers to access the parts listing so getting parts can be tricky unless you deal direct with Bobcat, or a Kubota loose motor dealer.
I get all my kubota parts from Country Sales and Service in Orrville, Ohio. Google the name and you will find their website. All they need is your motor number and probably have a full kit for your motor on the shelf, or a rebuilt swing motor if that is what you want. Mine they shipped with upgrades (I had bent rods) the same day.
There is also a place in Cape Girardeau, MO that has decent prices on running take outs.