Assembly Instructions20SETUP INSTRUCTIONSWalker Mowers are shipped partially assembled.After uncrating the tractor and mower deck, initialsetup is required.NOTE: During the process of unpacking, any dam-aged or missing parts should be noted and reportedto the delivering carrier immediately (put in writingwithin 15 days). The carrier will provide directionsfor proceeding with a claim to receive compensationfor damage.Tire Installation (Tractor)• Install the drive tires using the eight (8) lug boltsthat are supplied with the owner's packet of materi-als. Bolts are torqued to 75 to 85 ft-lb. Drive tires are18 x 9.50-8, 4-ply; rear tires are 13 x 5.00-6, 4-ply.• Check and adjust the inflation of the tires. Thetire inflation recommendations are:Drive = 15 PSI (103 kPa)Rear = 20 PSI (137 kPa)Battery ServiceRaise front mower body up for battery access (referto Front Body Latch Release in Operating Instruc-tions). Check the battery for electrolyte level andcharge. The electrolyte level should be at the bot-tom of the vent wells [1/4 to 1/2 in. (6 to 13 mm)above plates]. If the specific gravity is less than1.225, the battery needs charging. If the battery hasbeen shipped dry, or is wet but needs service, referto the following instructions.IMPORTANT: Make sure battery is securelymounted in the frame. A loose battery may causedamage to the case resulting in acid leakage and se-vere damage to the machine. A hazard may be cre-ated by damage to critical working parts and safetysystems.Wet Battery ServiceIf the battery has been shipped wet, but the electro-lyte level is low or the battery needs to be chargedthen:1. Fill each battery cell with drinking water to thebottom of the vent wells.2. Charge battery. Refer to Battery Charging inthis section.Dry Battery ServiceCAUTIONImportant Battery Service, Installation, andChanging Tips for MTEFI:• Do not allow the battery cables to touchopposing terminals. When connectingbattery cables attach the positive (+) cableto positive (+) battery terminal first, followedby negative (-) cable to negative (-) batteryterminal.• Never start the engine when the cablesare loose or poorly connected to thebattery terminals.• Never disconnect battery while engine isrunning.• Never use a quick battery charger tostart the engine.• Never "jump start" the engine usinganother source. Electricity fluctuations candamage the ECU (Electronic Control Unit).• Do not charge battery with key switch"on."• Always disconnect negative (-) batterycable lead before charging battery, andalso unplug harness from ECU before per-forming any welding on equipment.DANGERActivating a battery can be dangerous.The battery should be taken to a reliableservice station, battery store, or powerequipment dealer where a trained techni-cian can activate the battery safely. DONOT attempt to activate the battery unlessyou are experienced in battery servicework. The following activation and charg-ing instructions are provided for use by atrained battery technician.