Strange Lurch on the 1772

[FrankF3]

No, I'm not talking about the Addams Family..... My 1772 has started some strange behavior BUT only when it is first run after startup while it is still cool. After I have been mowing for 15 - 30 minutes, the problem disappears. When I stop and then start to move forward, the tractor lurches as if I moved the control forward a lot. In some instances when I have the tractor near an edge on the driveway or street, the tractor starts to jog between forward and reverse. I usually have to move the control a little more than usual to get out of that area, then the jogging stops. Once warmed up and hot, the issue goes away. Last year, the relief valves started leaking. I had them rebuilt, but I seriously doubt it is connected in any way.
Thanks,
Frank

[Billy-O]

Possibly in need oil and filter change?

Loose, dirty or out adjustment linkage.

[Oak]

I had something similar happen on my 982 and I found a broken spring on the hydro damper plate assembly.

[FrankF3]

Thanks, I'll start with checking the spring as it is still the original. Just to be sure, these are springs 932-3012 and 932-3013? if I find they are ok, then change the filter and oil. The linkages don't feel sloppy so I hope it's one of the other.

[Cubcadet782desiel]

Originally Posted by FrankF3

Thanks, I'll start with checking the spring as it is still the original. Just to be sure, these are springs 932-3012 and 932-3013? if I find they are ok, then change the filter and oil. The linkages don't feel sloppy so I hope it's one of the other.

it happend on my 782d if I am understanding you correctly I changed the fluid and filter and its better. when i first start it it is sluggish until its ran for a couple min hope it helps.

[johnwd98]

I would check the level of hydraulic fluid before changing it. The spring on the damper plate may be broken but also the damper plate itself can be badly worn so a new spring will not completely solve the problem.