Walker MDD Owner's Manual

Also see for MDD: Owner's manual Owner's manual

Contents

61Maintenance Instructions CHECKING/SERVICINGSecurity of Air Filtration ComponentsNOTE: The following inspection is only an exter-nal inspection and should be done without “dis-turbing” the filtration components.On a daily basis, visually inspect the external condi-tion of the complete air cleaner system. The follow-ing items should be inspected:1. Check the Donaldson Radialseal™ air cleanercanister for damage. Make sure the cover is inplace and the cover latches are secure - do notrun the engine without the air cleaner cover inplace and secure.2. Inspect the air intake hose for cracks, nicks,cuts, etc., and check the hose clamps for tight-ness.BatteryNOTE: For initial battery service during setup, re-fer to Battery Service in Assembly Instructions.IMPORTANT: Make sure battery is securely mount-ed in the frame. A loose battery may cause damageto the case resulting in acid leakage and severe dam-age to the machine. A hazard may be created bydamage to critical working parts and safety systems.Electrolyte LevelThe battery electrolyte level should be checked af-ter every 25 hours of operation. To check electro-lyte level:1. Remove battery cell filler caps.2. Check the electrolyte level. If the level is belowthe bottom of the vent well, fill with drinking wa-ter to the bottom of the vent wells [1/4 to 1/2 in.(6 to 13 mm) above the plates].3. Replace filler caps.IMPORTANT: DO NOT overfill the battery.Electrolyte will overflow through the vented capsonto parts of the machine and WILL result in se-vere corrosion.Cleaning the TerminalsIf battery terminals are corroded, remove batteryfrom the mower. Using a wire brush, remove corro-sion with a solution of one part baking soda andfour parts water. Rinse with clean water. Coat theterminals with petroleum jelly or terminal protectorspray to retard further corrosion.Charging the BatteryCheck the battery charge by measuring the specificgravity of electrolyte; if specific gravity is less than1.225, the battery will need to be charged as follows:1. Charge the battery at 15 amps for 10 minutes.DO NOT exceed 20 amps maximum recom-mended charging rate. Charge until specificgravity is at least 1.250. Total charging timeshould not exceed one (1) hour.2. After charging the battery, use drinking water toadjust the electrolyte level to the bottom of thevent wells [1/4 to 1/2 in. (6 to 13 mm) above theplates].Tire PressureInflate tires to pressures shown below:Deck Caster Wheel = 20 PSI (137 kPa)Drive = 15 PSI (103 kPa)Rear = 20 PSI (137 kPa)DANGERBATTERIES PRODUCE EXPLOSIVEGASES• Charge the battery in a well-ventilatedarea, so that gases produced while charg-ing can dissipate.• Keep sparks, flames, and smoking ma-terials away from the battery at all times.• Make sure the battery cap vents are open(check manifold vent on each cap).• Make sure the battery charger is un-plugged before connecting or discon-necting cables to the battery.