Case MD73, MD83, MD93 Disc Mower Operator Manual

These Case MD73, MD83, and MD93 disc mowers are hay tools that live in rough fields—rocky patches, uneven ground, wet spots—getting pushed hard during cutting season. This operator manual is what I’d keep handy in the cab or truck to make sure the mower is started, run, and shut down the way it was designed, so you don’t chew up gearboxes or snap driveline parts. If a new operator complains the cutter bar won’t engage or the machine is streaking the field, this is the document I’d use to walk them through the control sequence and daily checks before we start tearing into hardware.

Applications & Use Cases

• Verify correct startup and shutdown steps so the PTO, hydraulics, and mower bar aren’t shocked or overloaded.
• Walk a new operator through the controls to avoid bad habits that bend blades or twist the driveline.
• Follow daily inspection routines to catch loose hardware, oil leaks, or shield damage before they become big repairs.
• Confirm transport and field-position procedures so the mower lifts, locks, and trails safely behind the tractor.
• Troubleshoot simple “won’t cut right” complaints by checking adjustment and operator technique first.

FAQ

Q: Can I keep this manual on my phone or tablet in the field?

A: Yes, a digital copy works well; just download it ahead of time so you can zoom diagrams and read procedures without cell service.

Q: Is it worth printing parts of this manual?

A: Many mechanics print the startup, shutdown, and daily check pages, laminate them, and keep them in the tractor for quick reference.

Safety Note

Always follow the manual’s shutdown and PTO disengagement steps before going anywhere near the discs or driveline.

Case MD73, MD83, MD93 Disc Mower Index:

GENERAL INFORMATION
Note to the owner
Intended use
Electro-Magnetic Compatibility (EMC)
Product identification
Machine orientation
Machine components
SAFETY INFORMATION
Safety rules and signal word definitions
Safety rules – Personal safety
Safety features
Ecology and the environment
Safety signs
OPERATING INSTRUCTIONS
COMMISSIONING THE UNIT
TRANSPORT OPERATIONS
ROAD TRANSPORT
WORKING OPERATIONS
GENERAL INFORMATION
MAINTENANCE
GENERAL INFORMATION
MAINTENANCE CHART
After the first 8 hours
Every 8 hours or daily
Every 20 hours
Every 40 hours
After the first 50 hours
Every 50 hours or weekly
Every 200 hours or annually
As required
STORAGE
TROUBLESHOOTING
SYMPTOM(S)
SPECIFICATIONS
General specifications
ACCESSORIES
Disc knives
Swathboard kits
High stubble kit
FORMS AND DECLARATIONS
Delivery report – Owner copy
Delivery report – Dealer copy

CNH