Wright Manufacturing 43181 Oil Cooler Removal and Cleaning, Battery Service, Cleaning the Mower

prevent a rattle and should be installed hump down, like a “U”. Using compressed air or water to clean may or may not be necessary.

Oil Cooler Removal and Cleaning

Clean oil cooler weekly. Clean more often in dry conditions. To remove oil cooler for a thorough cleaning “STOP ENGINE”, lift thigh pad for access. Loosen knob as far as necessary to slide the cooler back about 3/8 – 1/2" and then lift up and out. (The cooler knob does not need to be removed) Watch cooler hoses so they do not snap pump fans. The debris screen should be removed before blowing cooler out from the bottom. When reinstalling the cooler, make sure the cooler hoses do not interfere with the fans and ensure the cooler housing is secure under the four tab points of the cooler bracket. Tighten knob securely.

How to Move the Mower if the Engine Won’t

Start

Rotate both of the manual “release” valve levers on the rear of each hydraulic pump about ½ turn counterclockwise. It is important not to over tighten these levers. Damage may occur to the pump if this valve is over tightened.

Bleeding Air from the Hydraulic System

Whenever servicing the hydraulic system, it is of the utmost importance to keep any dirt or debris from getting into the system. When any of the hydraulic parts are disconnected or removed or when the oil is changed, air must be bled from the system. If air is entrained in the system, loss of power, excessive heat, and damage to the hydraulic pumps may occur. First, make sure the oil level in the reservoir is correct. The level should be between 2” – 2 1/2” below the top of the oil fill tube. Use fully synthetic oil: Mobil 1 15W-50. Lift the mower so that the rear wheels are off the ground. Be careful to support the mower so that it will not fall or tip while the system is bled of air. With the bypass valves open and the engine running, slowly move the control levers back and forth five or six times. Now close the bypass valves and with the engine running, slowly move the control levers back and forth five or six times. It may be necessary to repeat the above steps until all the air is purged and the rear wheels are turning at normal speed. After purging is complete, adjust the oil level in the reservoir if necessary.

Battery Service

The battery is 12 volts and is a maintenance free battery. Charge the battery only if it will not start the mower properly. Remove the battery from the mower before charging. Follow the instructions of the battery charger for proper and safe charging of the battery.

Cleaning the Mower

The underside of the mower deck should be checked and cleaned twice daily, and more often if the grass being mowed is lush or wet. The entire mower should be cleaned daily at the end of the work day.

Cleaning should be done with a leaf blower or low- pressure compressed air. Wash with water only when necessary and do not use a pressure washer or nozzle as the water can enter electrical connections causing an electrical short, rust and corrosion. When washing with water, do so when the unit has cooled down. Washing a hot machine can cause various unseen system damage. If water is used for cleaning, immediately dry it with a leaf blower or low-pressure compressed air. Once the wash is complete, always lubricate and grease all applicable areas.

15