National Mower 68 SR owner manual Drive Mechanism -- Model 68 DL

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DRIVE MECHANISM -- MODEL 68 DL

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68OM-06/03

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Contents Model 68 SR Triplex Mower Model 68 DL Triplex Mower ONE Year Limited Warranty There is no Other Warranty Expressed or ImpliedNational Mower Company Table of Contents IntroductionSafety Information National Mower Safe Operating PracticesTraining Preparation OperationMaintenance ISO Safe Operating PracticesHill Operation TrainingMaintenance and Storage California Safe Operating PracticesSafety and Control Decals Main Engine Clutch LeverSafety and Control Decals Height Adjuster Safety and Control Decals Receipt of Shipment Uncrating InstructionsAssembly SeatRear Cutting Unit Reel to BED Knife Adjustment Rear Cutting Unit BeltNational 68 SR & DL Triplex Wing Cutting Units EnginePreparation OperationMain Clutch Lever Seat Position Adjuster Lever Transport Clutch Model 68 DL onlyRear Cutting Unit Clutch Wing Cutting Unit Latch Rear Cutting Unit Lift ArmSafety Switches Ignition Switch Model 68 DL shownService Brake Parking Brake LeverHeight of CUT Adjustment Other AdjustmentsStandard Adjusters DIAL-A-HEIGHT Adjuster OptionalMaintenance LubricationLubrication Points Maintenance Lubrication Points Reel Adjustments Reel END Play AdjustmentHeight of CUT Adjustment Brake AdjustmentAdjusting Drive Belt Tension Main Drive Belt Tension Main Countershaft to Rear DriveRear Cutting Unit Drive Belt Tension BED Knife Replacement Rear Cutting Unit Chain TensionBack Lapping Procedure IntroductionRecommended Steps Grinding ReelsMaintenance Record TROUBLE-SHOOTING Situation Things To CheckParts List Frame & Running GearRear Tire & Wheel Assembly Description QtyRunning Gear & MISC. Parts -- Model 68 DL Seat Mounting & Belt Guards WasherDrive Mechanism -- Upper Portion Spring Drive Mechanism -- Middle Portion Drive Mechanism -- Lower Portion Drive Mechanism -- Model 68 DL Needle Bearing Rear Axle & Differential Part No. Description Qty Shifter LeverWing Cutting Units Roller Rear Cutting Unit Countershaft SKIDS, Reel END Shields & Guards Rollers & Standard Scrapers DIAL-A-HEIGHT Roller Scraper KIT, P/N 860033 includes items Description Qty. per KitDIAL-A-HEIGHT Roller Adjuster KIT, P/N DIAL-A-HEIGHT ADJUSTER, P/N 205348 Safety Switches ResponseElectrical Diagrams Electrical PARTS-- Models 68 SR & 68 DL Description Qty Model 68 SR Model 68 DLSpecifications Mower Dimensions & WeightEngine Briggs & Stratton 138400 Series Sound & Vibration LevelsBelt CROSS-REFERENCE Chart Parts Ordering InformationFunction National Number Belt Mfr Number Déclaration DE Conformité Declaracion DE ConformidadConformiteitsverklaring Raymond Avenue Box Saint Paul, Minnesota Tel Fax

68 SR, 68 DL specifications

The National Mower 68 DL and 68 SR are two outstanding models in the world of lawn care, engineered for efficiency and ease of use. Both mowers offer a range of features tailored to meet the needs of both residential and commercial users, making them popular choices among landscapers and homeowners alike.

The National Mower 68 DL is designed with durability and performance in mind. It features a robust steel deck that enhances longevity while providing a clean and even cut. Equipped with a powerful engine, the 68 DL delivers high torque and swift acceleration, enabling users to tackle even the toughest grass and rough terrain effortlessly. The mower's advanced cutting system ensures that grass is cut finely and evenly, reducing the need for additional clean-up.

On the other hand, the National Mower 68 SR offers a self-propelled option, allowing users to move with ease across various landscapes. This model incorporates hydrostatic transmission technology, which provides smooth, variable speed control. This feature is particularly beneficial for those who demand precision in their mowing tasks, as it allow for adjustments on the fly, catering to changing terrain conditions.

Both models come with adjustable cutting height options, offering users the flexibility to choose their desired grass length. The easy-to-use lever enables quick and simple adjustments without needing tools, making the mowing process more efficient. Additionally, both the 68 DL and 68 SR are designed with ergonomics in mind, featuring comfortable handles and intuitive controls that minimize operator fatigue.

Safety is another critical consideration in the design of the National Mower 68 series. Both models come equipped with protective shields and safety switches to prevent accidental starts, ensuring that users can operate the machines with confidence.

For convenience, the mowers also feature large, easy-roll wheels that enhance maneuverability. The inclusion of a bagging system offers an option for collection of grass clippings, contributing to a cleaner lawn appearance post-mowing.

In summary, the National Mower 68 DL and 68 SR combine advanced engineering with user-friendly features that prioritize performance and safety. They are exceptional choices for anyone looking to maintain a pristine lawn with minimal effort, making yard work a more enjoyable task. Whether for home use or professional landscaping, these mowers stand out in their class, delivering reliable performance time after time.