National Mower 68 DL, 68 SR owner manual Drive Mechanism -- Lower Portion

Page 35

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NATIONAL 68 SR & DL TRIPLEX

DRIVE MECHANISM -- LOWER PORTION

Item

Part No.

Description

Qty.

 

 

 

 

1

03615

PULLEY, Lower Countershaft

2

2

06105

BEARING, Lower Countershaft

2

________________________________________________________________________________________________________________________________________3

205482

CARRIER, Lower Countershaft (Model 68SR only)

1

 

 

205481

CARRIER, Lower Countershaft (Model 68DL only)

1

4

04056

ROLL PIN, 0.25 x 1.12

2

_______________________________________________________________________________________________________________________________________5

02614

WASHER

1

 

6

205458

PIVOT, Switch, R.H.

1

7

200123

BUSHING

1

________________________________________________________________________________________________________________________________________8

02614

WASHER

1

 

9

202798

SPRING

2

10

200137

PULL ANGLE, Wing Mower, Rear

1

______________________________________________________________________________________________________________________________________________11

205461

PIVOT, Switch, L.H.

1

 

12

02602

DUST CAP, 3/4" I.D.

2

13

205454

PULL ARM, Wing Mower, Left and Right Hand

1

____________________________________________________________________________________________________________________________________________14

07226

GRIP, Wing Mower Arm

1

 

15

200135

COUNTERSHAFT, Lower

1

16

03901

BELT, Countershaft, A29

1

______________________________________________________________________________________________________________________________________________17

03603

PULLEY, Lower Countershaft Drive

1

 

18

200136

BELT GUIDE, Pulley

1

19

205462

BRACKET, Switch Mounting

2

_____________________________________________________________________________________________________________________________________________20

07325

SWITCH, Control

2

 

21

04505

SPRING, Wing Mower Pull Rod

1

22

200151

PULL ROD, Wing Mower

1

23

201880

PIN, Wing Mower Arm

1

68OM-06/03

35

Image 35
Contents Model 68 SR Triplex Mower Model 68 DL Triplex Mower National Mower Company ONE Year Limited WarrantyThere is no Other Warranty Expressed or Implied Introduction Table of ContentsOperation Safety InformationNational Mower Safe Operating Practices Training PreparationTraining MaintenanceISO Safe Operating Practices Hill OperationCalifornia 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 ShipmentRear Cutting Unit AssemblySeat Engine Reel to BED Knife AdjustmentRear Cutting Unit Belt National 68 SR & DL Triplex Wing Cutting UnitsMain Clutch Lever PreparationOperation Wing Cutting Unit Latch Rear Cutting Unit Lift Arm Seat Position Adjuster LeverTransport Clutch Model 68 DL only Rear Cutting Unit ClutchParking Brake Lever Safety SwitchesIgnition Switch Model 68 DL shown Service BrakeDIAL-A-HEIGHT Adjuster Optional Height of CUT AdjustmentOther Adjustments Standard AdjustersLubrication MaintenanceLubrication Points Maintenance Lubrication Points Brake Adjustment Reel AdjustmentsReel END Play Adjustment Height of CUT AdjustmentRear Cutting Unit Drive Belt Tension Adjusting Drive Belt TensionMain Drive Belt Tension Main Countershaft to Rear Drive Rear Cutting Unit Chain Tension BED Knife ReplacementGrinding Reels Back Lapping ProcedureIntroduction Recommended StepsMaintenance 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 DLSound & Vibration Levels SpecificationsMower Dimensions & Weight Engine Briggs & Stratton 138400 SeriesFunction National Number Belt Mfr Number Belt CROSS-REFERENCE ChartParts Ordering Information Conformiteitsverklaring Déclaration DE ConformitéDeclaracion DE Conformidad 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.