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Thanks so much for the reply. Transmission/hydraulic fluid level is GTG, with no signs of leaking (unless I am just missing it). I get the impression that something is just starting to fail or a minuscule leak in a hose that needs to manifest itself before it will be apparent what is actually...

I am hoping to find some help with advice on my F3680 steering. After mowing for about 3 hours the steering on my mower all but went out. The steering wheel turned normally, but there was no or very little movement/turning of the rear tires. After letting the mower sit for a day, the...

I am a new user to this site. On my best day would be considered a "shade tree" mechanic, and quite frankly do not like to pay $50-$90 per hour for labor of someone else working on my equipment. The site being here, and the people contributing to the site have helped me out a lot. Thanks to...

Thanks so much to all who provided help and insight to getting my mower back on the grass. I have just replaced both fuel filters and bogging down is no longer an issue. I think that the previous owner just never replaced the filter closest to the tank. That filter is not easy to see/get to and...

Thanks very much to everyone for the pointers. I now have some place to start when I get off work next week. I will post my results when I am finished.

How many hours, maintenance history, does it smoke when it bogs down/color of smoke, did it happen suddenly or over time, etc.? The mower has about 1200 hours on it, I just bought it last year (thought I was getting a deal!) I have not noticed any excessive smoke when it bogs down - but some...

It is a diesel - 36 HP front mount mower. Just finished the work on the rear axle and took it out for a test drive without the mower. The rear axle seems fine - everything spins as it should which makes me think that it may not be in the drive system and that I have an additional problem to...

My F3680 bogs down (if you drove the mower into thick, tall grass too fast) and I can not figure out why. I had a problem with the left rear bevel gear box - a couple of the bearings had disintegrated - so I thought it was a matter of the gears binding and "dragging" the mower down. I have...

A rookie question for the pros. I am reassembling the rear axle of my F3680 and having problems getting the tie bar back on. I have a couple of issues I am having problems with. It appears that the tie bar needs to be pressed in. Is there a way for me to do that or do I have to take it to...

Dave - Thanks so much for your insight. I guess I have no more questions until the parts come in and I can get back to work.

I am now trying to make sure that I am ready to put the case back together when the parts get here, I was hoping someone could provide me some insight on the gasket sealer/liquid gasket and the liquid lock that they recommend in the maintenance manual. The easiest/cheapest place to acquire and...

Dave - I ordered the IRWIN Hanson Multi Spline Est set right off Amazon. It was about $30 for a full set (more than I will probably ever need, but you never know). I got them yesterday and they work like CHAMPS on the stripped allen screws. As long as you follow the guidelines (drill bit...

Thanks Dave! Going to find some tomorrow.

Now that I have the tie bar and the bevel gear case off, I have a couple of problems I was hoping someone could help me with. The drain plug (allen wrench) on the bottom is stripped out - really not impressed with whoever worked on this machine before! An "easy out" is not working to remove it...

Headed to town now to get one - THANKS!

I am new to the Forum, so I am not sure if I am in the right place, but could use some advice for the maintenance I have decided to do on my F3680. I have a problem with one of the bevel gear cases and am in the process of getting it off. My first issue (I am sure there will be many more to...