Removing The Mower From Storage - DeWalt X536 Instruction Manual

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PRODUCT CARE, cont'd

Adding Hydrostatic Transmission Oil

1. Loosen the two star knobs securing the leg pad to the mower.

2. Remove the leg pad from the mower.

3. Remove the rear panel from the mower. Refer to Removing/installing The Rear

Panel on page 8.

4. Remove the hydrostatic transmission oil reservoir cap (a)

5. Mowers with 48 or 54 inch Mowing Decks Only: Insert a funnel into the reservoir (b).

See Figure 26.

6. Mowers with 36 inch Mowing Decks Only:

a. Remove the black cap (c)from the control panel by reaching under the panel and

squeezing the two tabs and pushing up. See Figure 26.

b. Insert a long necked funnel through the control panel and into the hydrostatic

transmission oil reservoir.

7. Add hydrostatic transmission oil until the level is even with the upper reservoir

mounting bolts. See Figure 24.

8. Replace the hydrostatic transmission oil reservoir cap (and black cap if removed from

securely tighten.

9. Purge air from the hydrostatic transmission. Refer to Purging Air From The Hydrostatic

Transmission in this procedure.

10. Reinstall the rear panel. Refer to Removing/installing The Rear Panel on

page 8.

11. Using the two star knobs, reinstall the leg pad.

(a)

(b)

Purging Air From The Hydrostatic Transmission

Due to the effects air has on efficiency in hydrostatic drive applications, it is critical that air

is removed or purged from the system.

iMPORTAnT: These purge procedures must be preformed any-time a hydrostatic

system has been opened for maintenance or repair, or if any additional oil has been

added to the system.

Air creates inefficiency because it has compression and expansion rates that are higher

than that of oil.

Air trapped in the oil may cause the following symptoms:

1. Noisy operation.

2. Lack of power or drive after short-term operation.

3. High operation temperature and excessive expansion of oil.

Before starting, make sure the reservoir is at the proper oil level. Refer to Checking The

Hydrostatic Transmission Oil Level in this Section.

iMPORTAnT: The following procedures should be performed with the mower drive

wheels off the ground, then repeated under normal operating conditions.

WARNING: Certain procedures require the mower engine to be operated

and the vehicle to be raised off of the ground. To prevent possible injury

to the servicing technician and/or bystanders, insure the vehicle is

properly secured.

4. With the bypass valves open and the engine running, slowly move the drive control

levers in both forward and reverse directions (5 to 6 times). As air is purged from the

unit, the oil level in the reservoir will drop.

5. With the bypass valve closed and the engine running, slowly move the directional

control in both forward and reverse directions (5 to 6 times). Check the oil level, and

add oil as required after stopping engine.

6. It may be necessary to repeat STEPS 1 and 2 until all the air is completely purged from

the system. When the wheels moves forward and reverse at normal speed and the

reservoir oil remains at a constant level, purging is complete.

(c)

Figure 26

Mower Storage

If your mower is not going to be operated for an extended period of time (30 days to

approximately 6 months), the mower should be prepared for storage. Store the mower

in a dry and protected location. If stored outside, cover the mower (including the tires)

to protect it from the elements. The procedures outlined below should be performed

whenever the mower is placed in storage.

1. Change the engine oil and filter following the instructions provided in the Engine

Operator's Manual packed with this manual.

WARNING: Never store the mower with fuel in the tank indoors or in poorly

ventilated enclosures, where fuel fumes may reach an open flame, spark or

pilot light as on a furnace, water heater, clothes dryer, etc.

2. If storing the mower for 30 days or more:

a. To prevent gum deposits from forming inside the engine's carburetor and causing

possible malfunction of the engine, the fuel system must be either completely

emptied, or the gasoline must be treated with a stabilizer to prevent deterioration.

WARNING: Fuel left in the fuel tank deteriorates and will cause serious

starting problems.

b. Use a fuel stabilizer for storage between 30 and 90 days:

• Read the product manufacturer's instructions and recommendations.

• Add to clean, fresh gasoline the correct amount of stabilizer for the capacity

(approximately 3 gallons) of the fuel system.

• Fill the fuel tank with treated fuel and run the engine for 2-3 minutes to get

stabilized fuel into the carburetor.

c. Emptying the fuel system for storage of more than 90 days:

• Prior to putting the mower in storage, monitor fuel consumption with the goal

of running the fuel tank empty.

• Run the engine until it begins to stall. Use the choke to keep the engine running

until all fuel in the carburetor has been exhausted.

• Referring to the Engine Operator's Manual, drain the fuel from the carburetor

bowl.

3. Clean the engine and the entire mower thoroughly.

4. Fully charge the battery, then disconnect the negative cable at the battery to prevent

possible discharge. Recharge the battery periodically when in storage.

note: Remove the battery if exposed to prolonged periods of sub-freezing

temperatures. Store in a cool, dry location where temperatures are above freezing.

5. Lubricate all lubrication points.

note: Using a pressure washer or garden hose is not recommended for cleaning your

mower. It may cause damage to electrical components, spindles, pulleys, bearings or

the engine. The use of water will result in shortened life and reduce serviceability.