National Mower
68 SR, 68 DL
owner manual
Parts List, Frame & Running Gear
Troubleshooting
Specs
Parts list
Electrical Diagrams
Warranty
Maintenance
Assembly
Back Lapping Procedure
Height Adjuster
BED Knife Replacement
Page 28
PARTS LIST
FRAME & RUNNING GEAR
28
68OM-06/03
Page 27
Page 29
Image 28
Page 27
Page 29
Contents
Model 68 SR Triplex Mower Model 68 DL Triplex Mower
There is no Other Warranty Expressed or Implied
ONE Year Limited Warranty
National Mower Company
Table of Contents
Introduction
Safety Information
National Mower Safe Operating Practices
Training Preparation
Operation
Maintenance
ISO Safe Operating Practices
Hill Operation
Training
Maintenance and Storage
California Safe Operating Practices
Safety and Control Decals
Main Engine Clutch Lever
Safety and Control Decals
Height Adjuster
Safety and Control Decals
Receipt of Shipment
Uncrating Instructions
Seat
Assembly
Rear Cutting Unit
Reel to BED Knife Adjustment
Rear Cutting Unit Belt
National 68 SR & DL Triplex Wing Cutting Units
Engine
Operation
Preparation
Main Clutch Lever
Seat Position Adjuster Lever
Transport Clutch Model 68 DL only
Rear Cutting Unit Clutch
Wing Cutting Unit Latch Rear Cutting Unit Lift Arm
Safety Switches
Ignition Switch Model 68 DL shown
Service Brake
Parking Brake Lever
Height of CUT Adjustment
Other Adjustments
Standard Adjusters
DIAL-A-HEIGHT Adjuster Optional
Maintenance
Lubrication
Lubrication Points
Maintenance
Lubrication Points
Reel Adjustments
Reel END Play Adjustment
Height of CUT Adjustment
Brake Adjustment
Main Drive Belt Tension Main Countershaft to Rear Drive
Adjusting Drive Belt Tension
Rear Cutting Unit Drive Belt Tension
BED Knife Replacement
Rear Cutting Unit Chain Tension
Back Lapping Procedure
Introduction
Recommended Steps
Grinding Reels
Maintenance Record
TROUBLE-SHOOTING
Situation Things To Check
Parts List
Frame & Running Gear
Rear Tire & Wheel Assembly
Description Qty
Running Gear & MISC. Parts -- Model 68 DL
Seat Mounting & Belt Guards
Washer
Drive 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 Lever
Wing 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 Kit
DIAL-A-HEIGHT Roller Adjuster KIT, P/N
DIAL-A-HEIGHT ADJUSTER, P/N 205348
Safety Switches
Response
Electrical Diagrams
Electrical PARTS-- Models 68 SR & 68 DL
Description Qty Model 68 SR Model 68 DL
Specifications
Mower Dimensions & Weight
Engine Briggs & Stratton 138400 Series
Sound & Vibration Levels
Parts Ordering Information
Belt CROSS-REFERENCE Chart
Function National Number Belt Mfr Number
Declaracion DE Conformidad
Déclaration DE Conformité
Conformiteitsverklaring
Raymond Avenue Box Saint Paul, Minnesota Tel Fax