National Mower SR 68, DL 68 owner manual Maintenance, Lubrication

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NATIONAL® 68" SR & DL TRIPLEX – CE

MAINTENANCE

LUBRICATION

Figure D shows the top view of the 68" Triplex Mower with guards removed. Lubricate the machine at the recommended locations and intervals using the proper lubicants to ensure maximum service and long life of your machine. Refer to the engine manual (separately furnished) for proper lubrication and maintenance instructions.

Since the mower does not operate at high speeds, the grease level in the differential is not critical providing that there is sufficient grease to coat the gears.

Unless leakage is evident, it is recommended that the

grease be checked once each year. Check grease level by loosening the bolts in the differential case flanges and spreading case halves. It is not necessary to totally disassemble the case or remove the wheels for this inspection. Add Multi-purpose Gear Grease such as Pennzoil No. 303 or equivalent if necessary. Total grease capacity is 1-1/2 pounds.

Do not use oil in the differential case in place of grease–it will leak through the seals.

FIGURE D

LUBRICATION CHART

ITEM GREASE

OIL

FEQUENCY

 

 

 

 

 

1

 

 

 

8 Hours

 

 

 

 

 

 

2

8 Hours

3

30 Hours

4

Gear Grease

Yearly

IMPORTANT

Figure E shows the top view of the left wing mower with guards removed and shows the proper lubrication locations. These areas on both wing mowers must be free of dirt and grass clippings and be well lubricated for proper drive belt ten- sion and operation. Support collars for the wing mower pull rods must be kept in alignment to maintain belt tension.

FIGURE E

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Contents SR Triplex CE National Mower Company There is no Other Express WarrantyTable of Contents Declaration of Conformity Dimensions & WEIGHT- Mower SpecificationsEngine Briggs & Stratton Disposal NumbersNational Mower Safe Operation Practices For Riding Mowers Transfer Identification Transfer Description Receipt of Shipment IntroductionUncrating Instructions Figure B Assembly Instructions Figure C OperationLubrication MaintenanceFigure F Recommended Steps IntroductionReel to BED Knife Adjustment AdjustmentsReel END Play Adjustment Height of CUTWing Mower Drive Belt Tension Brake AdjustmentRear Mower Drive Belt Tension TROUBLE-SHOOTING Ordering Information Parts List68OMCE-10/01-350 Frame & Running Gear 68OMCE-10/01-350 National 68 SR & DL Triplex Part No. Description Qty68OMCE-10/01-350 Drive Mechanism & Side Supports 68OMCE-10/01-350 Rear Mower 68OMCE-10/01-350 Wing Mowers SKIDS, Reel END Shields & Guards DL 68 Running Gear & MISC. Parts DL 68 Drive Parts Foot Lever Hourmeter Ampmeter Battery GRN KEY Lead Frame DL 68 Electrical Diagram 68OMCE-10/01-350