27Maintenance4.12.2 RETURN TO SERVICETo return the unit to service after storage, proceed as follows:1. Verify that utility power is turned off and that the AUTO/OFF/MANUAL switch is set to OFF.2. Check the tag on the engine for oil viscosity and classification.Verify that the correct recommended oil is used in the engine(see the Engine Oil Recommendations section). If necessary,drain and refill with the proper oil.3. Check the state of the battery. Fill all cells of unsealed bat-teries to the proper level with distilled water. DO NOT USETAP WATER IN THE BATTERY. Recharge the battery to 100percent state of charge, or, if defective, replace the battery.See “Specifications,” for type and size.4. Clean and wipe the entire generator.5. Make sure the 7.5A fuse is removed from the generator con-trol panel. Reconnect the battery. Observe battery polarity.Damage may occur if the battery is connected incorrectly.6. Open the fuel shutoff valve.7. Insert the 7.5A fuse into the generator control panel. Start theunit by moving the AUTO/OFF/MANUAL switch to MANUAL.Allow the unit to warm up thoroughly.8. Stop the unit by setting the AUTO/OFF/MANUAL switch to OFF.9. Turn on the utility power to the transfer switch.10. Set the AUTO/OFF/MANUAL switch to AUTO.11. The generator is now ready for service.NOTE:If the battery was dead or disconnected, the exercise timer, cur-rent date and time must be reset.4.12.3 MAINTENANCE / ACCESSORY ITEMSThe manufacturer provides all the proper OEM maintenance partsneeded to properly maintain and service your generator along withaccessory type items that provide enhanced performance. Weencourage you to visit us at www.generac.com to locate a localauthorized service provider that can provide you with these itmes,or you may choose to order directly off the Generator AccessoryTab on our site.NOTE:Not all items listed are available for sale at www.generac.com.Scheduled Maintenance Kits with OilPart Number Description Oil Type0J576400SM Kit for 8kW Generator 10W-300J57640SSM Kit for 8kW Generator 5W-30 synthetic0J576600SM Kit for 10kW Generator 10W-300J57660SSM Kit for 10kW Generator 5W-30 synthetic0J576700SM Kit for 13-17KW Generator 10W-300J57570SSM Kit for 13-17KW Generator 5W-30 synthetic0J576800SM Kit for 18-20kW Generator 10W-300J57680SSM Kit for 18-20kW Generator 5W-30 syntheticCold Weather Kits0J580000CW Cold Weather Kit 8-20kWTouch-up Paint0J579600TP Kit Paint BisqueFascia Skirt Wrap0J580300BF Kit Base Fascia BisqueStarting Battery0H3421S Group 26R 12 Volt Battery** Remote Monitor System** Auxiliary Transfer Switch Lockout** GenPad** Contact your nearest authorized service provider for assistance.