Maintenance Instructions LUBRICATION322. Clean the area around the individual gearboxcover plates to prevent contaminants from en-tering the gearcase.3. Remove the screws securing the cover plateson the blade drive gearboxes.4. Check the level of lubricant in the gearboxes. Ifthe lubricant is low, add SAE E.P. (ExtremePressure) 90W oil until the oil level is up to (sub-merges) the horizontal shaft in the gearbox(shaft parallel to cover plate).NOTE: In case the gearboxes are completelydrained of oil, approximately 5 fl. oz. (15 cl) of oilper gearbox is required to refill the gear driveassembly.NOTE: Since the gearboxes are connected asa unit by connector tubes, it is necessary to addoil slowly. Allow a few minutes after adding oilfor the oil to flow throughout the assembly andthe oil level to stabilize before reassembly.IMPORTANT: DO NOT overfill the deck gear-boxes. The gearbox assembly is not vented,and overfilling with oil will cause excessive pres-sure and result in oil leaks.5. Check condition of the cover gasket and replaceif worn or damaged. Reinstall gearbox coverplates; torque screws to 24 in-lb (2.7 N⋅m).DSD52 Mower Deck LubricationThere are several special lubrication requirementsfor the DSD52 mower deck in addition to the require-ments detailed in the Chassis and Deck Lubrica-tion illustration. Lubricate the locations shown inthe Blade Spindle Lubrication and Gearbox, Dol-ly Wheel, and U-Joint Lubrication photos andcheck and maintain oil in the belt drive gearbox.1. Lubricate the blade spindles every 25 hourswith two (2) shots of SAE general purpose lithi-um or molybdenum base grease.Blade Spindle Lubrication (DSD52)2. Check the oil level in the belt drive gearbox ev-ery 100 hours (or sooner if a visible oil leak hasdeveloped). With the deck in the normal oper-ating position, remove the level plug in the sideof the gearcase. Add SAE E.P. (Extreme Pres-sure) 90W oil to maintain the oil level to the plug.If the oil level is low, check the gearbox for anyindication of an oil leak. If an oil leak is noted,the gearbox will need to be removed and rebuilt.3. Lubricate the dolly wheel pivot every 25 hourswith general purpose grease.4. Lubricate the U-Joint in the drive shaft every8 hours with SAE general purpose lithium ormolybdenum base grease.Gearbox, Dolly Wheel, and U-Joint LubricationBladeSpindlesDolly WheelPivotU-JointLevel PlugBelt DriveGearbox