/ hydraulic #21  
Does anyone know how much hydraulic fluid a 2610H holds? The manual doesn't say and when google it I see anywhere from 2.9 to 12 gallons. Here what in the manual and it can not be correct there is no way this is all it takes. View attachment 855436
Looking at the picture of your tractor, that amount may be correct. Recommend putting tractor on level ground, check level to ensure full; drain, refill, check level.