MTD WHITE GT-185 - Hydrostatic Transmission Fluid and Filter; Cutting Blades; Blade Removal and Replacement

Hydrostatic Transmission Fluid and Filter
The hydrostatic transmission contains approximately
60 ounces of API classification SH/CD 20W50 motor
oil. For operation in colder climates, 10W40 oil may be
used. Also, a 15W50 synthetic engine oil would pro¬
vide excellent all climate performance and extended
time between oil changes. Use only filter part number
HG-50037.
Change the hydrostatic transmission fluid and filter
initially after 10 to 20 hours of operation, and every
200 hours of operation or once a year thereafter.
To change the hydrostatic transmission fluid and filter:
1. Remove oil filter on left side of transaxle and drain
oil.
2. Clean around filter base and install new oil filter.
Order part number HG-50037.
3. Raise rear of tractor and remove right rear wheel
by removing hub cap, cotter pin and flat washer.
4. Level tractor by blocking rear axle.
5. Using a 1/4" alien wrench, remove the oil level
plug from right side of transaxle. See figure 20.
6. Remove the transmission panel by removing the
parking brake knob and truss machine screws.
7. Clean around filler hose (inside right frame) and
bend hose upward. See figure 21.
8. Remove plastic vent from top of filler hose and
insert a funnel. Fill transaxle with oil to the point of
overflowing out of oil level hole.
9. Replace oil level plug and plastic vent.
10. Start tractor and run for 1 minute. Recheck oil
level. Add oil if necessary.
11. Reassemble in reverse order.
12. Remove the blocks from under rear axle and test
the operation of the tractor.
CUTTING BLADES
WARNING: Protect hands by using heavy
gloves or a rag to grasp the cutting
blades.
The blades may be removed for sharpening or
replacement as follows:
50" Decks only:
1. Remove the bolt and washer which holds the
blade and adapter to the blade spindle. Remove
the blade and adapter from the blade spindle.
2. Remove the two bolts, lock washers and nuts
holding the blade to the adapter. See figure 22A.
FIGURE 22A.—50" Deck
46" Decks Only:
1. Remove the hex flange nut that holds the blade to
17