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Section 7
B. CHANGING HYDRAULIC OIL
The hydraulic system oil should be changed after the first
120 hours of machine operation and every 400 hours or
annually thereafter, whichever occurs first. The oil should
also be changed if the color of the fluid has become black
or milky. A black color and/or a rancid odor usually indicates
possible overheating of the oil, and a milky color usually
indicates water in the hydraulic oil.
- IMPORTANT -
The hydraulic system oil should be changed if you
notice the presence of water or a rancid odor to
the hydraulic oil.
Park the mower on a level surface and stop the
1.
engine.
Remove the three 1/4" filter guard screws and filter
2.
guard from both axles. See Figure 7-2. Clean any
loose debris around the perimeter of the filter.
REMOVE SCREWS AND
OIL FILTER GAURD
REMOVE OIL
FILTER
Hydraulic Oil Filter and Drain Plug
Figure 7-2.
Place a suitable container under the hydraulic
3.
oil filters. Remove the fill cap from the expansion
reservoir.
HYDRAULIC SYSTEM
7.3
A. CHECkING HYDRAULIC OIL LEvEL
The hydraulic oil level should be checked after the first 10
hours of operation. Thereafter, check the oil after every
200 hours of machine operation or monthly, whichever
occurs first.
- IMPORTANT -
If the oil level is consistently low, check for leaks
and correct immediately.
Wipe dirt and contaminants from around the
1.
reservoir cap. Remove the cap from the hydraulic oil
expansion reservoir.
When the machine is "cold" (before operation),
2.
visually check the level of the hydraulic system oil.
Hydraulic system oil level should be up to the FULL
/ COLD indicator line on the hydraulic expansion
reservoir. See Figure 7-1. DO NOT overfill; (overfilling
the oil reservoir may cause oil seepage).
Clean the fill cap and install it onto the expansion
3.
reservoir.
HYDRAULIC SYSTEM OIL
EXPANSION RESERVOIR
FULL / COLD
INDICATOR LINE
Hydraulic System Oil Level
Figure 7-1.
