National Mower 68 DL, 68 SR owner manual Needle Bearing

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NATIONAL 68 SR & DL TRIPLEX

DRIVE MECHANISM -- MODEL 68 DL

 

 

 

 

 

 

 

 

Item

Part No.

Description

Qty.

 

 

 

 

 

1

09100

GUARD, Engine Clutch

1

 

2

201881

RETAINER, Mowing Belt

1

 

3

201884

RETAINER, Transport Belt

1

 

_________________________________________________________________________________________________________________________________________

 

4

201890

MOUNT, Belt Guides

1

 

5

201872

STEP PULLEY, Main Countershaft

1

 

6

03603

PULLEY, Transport, Main Countershaft

1

 

_________________________________________________________________________________________________________________________________________

 

7

02507

Washer, 10 GA.

2

 

8

03502

O-RING, 7/8" Dia.

2

 

9

06101

NEEDLE BEARING

2

 

_________________________________________________________________________________________________________________________________________

 

10

03902

BELT, Drive, B66

1

 

11

03655

PULLEY, Main Countershaft

1

 

12

04013

KEY, Woodruff, #11

3

 

_________________________________________________________________________________________________________________________________________

 

13

201871

COUNTERSHAFT, Main

1

 

14

201740

HOUSING, Main Countershaft

1

 

15

200208

KEY, Square, Engine

2

 

_________________________________________________________________________________________________________________________________________

 

16

03926

BELT, Engine, Transport, 6841 Gates Power Rated

1

 

17

03602

PULLEY, Engine, Transport Belt

1

 

18

03903

BELT, Engine, Mowing, 6844 Gates Power Rated

1

 

_________________________________________________________________________________________________________________________________________

 

19

03609

PULLEY, Engine, Mower Belt

1

 

20

202780

BELT GUIDE WELDMENT, Engine

1

 

21

202446

STUD, Belt Guide

1

 

_________________________________________________________________________________________________________________________________________

 

22

201946

BRACKET, Idler Pivot with Bushings

1

 

23

200530

GUIDE, Belt

1

 

24

202441

SPRING, Transport Pedal Return

1

 

_________________________________________________________________________________________________________________________________________

 

25

03608

PULLEY, Idler

1

 

26

201721

FOOT LEVER

1

 

27

201728

ARM, Idler, Lower Countershaft

1

 

_________________________________________________________________________________________________________________________________________

 

28

201730

ARM., Idler, Mowing Belt

1

 

29

03607

PULLEY, Clutch Lever

1

 

30

201718

PULLEY LEVER, Transport

1

 

_________________________________________________________________________________________________________________________________________

 

31

201889

GUIDE, Belt

1

 

32

201919

ROD, Transport Clutch

1

 

33

202440

SPRING, Transport

1

 

_________________________________________________________________________________________________________________________________________

 

34

201966

PEDAL, Transport

1

 

35

205481

CARRIER, Lower Countershaft

1

 

_________________________________________________________________________________________________________________________________________

68OM-06/03

37

Image 37
Contents Model 68 SR Triplex Mower Model 68 DL Triplex Mower There is no Other Warranty Expressed or Implied ONE Year Limited WarrantyNational Mower Company Introduction Table of ContentsNational Mower Safe Operating Practices Safety InformationTraining Preparation OperationISO Safe Operating Practices MaintenanceHill Operation TrainingCalifornia Safe Operating Practices Maintenance and StorageMain Engine Clutch Lever Safety and Control DecalsSafety and Control Decals Height Adjuster Safety and Control Decals Uncrating Instructions Receipt of ShipmentSeat AssemblyRear Cutting Unit Rear Cutting Unit Belt Reel to BED Knife AdjustmentNational 68 SR & DL Triplex Wing Cutting Units EngineOperation PreparationMain Clutch Lever Transport Clutch Model 68 DL only Seat Position Adjuster LeverRear Cutting Unit Clutch Wing Cutting Unit Latch Rear Cutting Unit Lift ArmIgnition Switch Model 68 DL shown Safety SwitchesService Brake Parking Brake LeverOther Adjustments Height of CUT AdjustmentStandard Adjusters DIAL-A-HEIGHT Adjuster OptionalLubrication MaintenanceLubrication Points Maintenance Lubrication Points Reel END Play Adjustment Reel AdjustmentsHeight of CUT Adjustment Brake AdjustmentMain Drive Belt Tension Main Countershaft to Rear Drive Adjusting Drive Belt TensionRear Cutting Unit Drive Belt Tension Rear Cutting Unit Chain Tension BED Knife ReplacementIntroduction Back Lapping ProcedureRecommended Steps Grinding ReelsMaintenance Record Situation Things To Check TROUBLE-SHOOTINGFrame & Running Gear Parts ListDescription Qty Rear Tire & Wheel AssemblyRunning Gear & MISC. Parts -- Model 68 DL Washer Seat Mounting & Belt GuardsDrive Mechanism -- Upper Portion Spring Drive Mechanism -- Middle Portion Drive Mechanism -- Lower Portion Drive Mechanism -- Model 68 DL Needle Bearing Rear Axle & Differential Shifter Lever Part No. Description QtyWing Cutting Units Roller Rear Cutting Unit Countershaft SKIDS, Reel END Shields & Guards Rollers & Standard Scrapers Description Qty. per Kit DIAL-A-HEIGHT Roller Scraper KIT, P/N 860033 includes itemsDIAL-A-HEIGHT Roller Adjuster KIT, P/N DIAL-A-HEIGHT ADJUSTER, P/N 205348 Response Safety SwitchesElectrical Diagrams Description Qty Model 68 SR Model 68 DL Electrical PARTS-- Models 68 SR & 68 DLMower Dimensions & Weight SpecificationsEngine Briggs & Stratton 138400 Series Sound & Vibration LevelsParts Ordering Information Belt CROSS-REFERENCE ChartFunction National Number Belt Mfr Number Declaracion DE Conformidad Déclaration DE ConformitéConformiteitsverklaring 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.