68Maintenance Instructions CHECKING/SERVICINGIMPORTANT: The coolant solution of antifreezeand distilled water must be thoroughly pre-mixed be-fore putting it in the engine (adding pure antifreezeinto the radiator may cause damage to the engine bycausing overheating).Security 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 both air intake hoses 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. Electro-lyte will overflow through the vented caps onto partsof the machine and WILL result in severe corrosion.CAUTIONImportant 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.