In Reply to: Hydrostat on JD 9600 series posted by Carolina farmer on July 28, 2000 at 12:34:51:

We have 2 9610 1998 models with approximately 800
hours. We are running dual 18.4 x 38s on front with
23.1 x 26 on rear with mud hog 4wd. Replaced hydrostat
on one and the other is getting weak. We run in 4wd
approximately 25% of time. We previously had 2 1993 and
2 1995 9600s with 30.5 x32 fronts with 23.1 x 26 rears and
4wd and no hydrostat problems. This is the first hydrostat
problems we have had in 20 years of running Massey, IH
and Deere combines.