Introduction
This manual covers Bobcat E50 Compact Excavator models with serial numbers S/N AG3N11001 & Above. It contains detailed instructions and guidelines to ensure optimal performance and longevity of your equipment.
Important: Always read and understand this manual before operating or performing maintenance on the Bobcat E50 Compact Excavator.
Safety Information
Operating heavy machinery requires strict adherence to safety protocols to prevent injury or damage.
- Always wear appropriate personal protective equipment (PPE) including hard hat, safety glasses, and steel-toed boots.
- Ensure the work area is clear of personnel, bystanders, and obstructions before starting operation.
- Perform daily pre-operation checks as outlined in this manual.
- Understand all control functions and machine capabilities before starting the engine.
- Never operate the machine under the influence of drugs, alcohol, or medications that impair judgment.
Refer to the safety decals located on the machine for additional warnings and instructions.
Setup and Pre-Operation Checks
Before starting the excavator, perform the following essential checks to ensure safe and efficient operation:
- Fluid Levels: Check engine oil, hydraulic fluid, engine coolant, and fuel levels. Replenish fluids as necessary using recommended types.
- Track Tension: Inspect track tension. Adjust if tracks appear too loose or too tight according to the specifications provided in the full manual.
- Greasing Points: Lubricate all designated grease points on the boom, arm, bucket, and swing bearing using the recommended grease.
- Attachments: Ensure all attachments (e.g., bucket, thumb) are securely mounted and pins are properly locked with their retainers.
- Visual Inspection: Conduct a thorough visual inspection for any loose bolts, damaged hoses, fluid leaks, or unusual wear on components.
Image: Bobcat E50 Compact Excavator

This image displays the Bobcat E50 Compact Excavator, providing a visual reference for the machine discussed in this manual.
Operating Instructions
Starting the Engine
- Ensure the parking brake is engaged and the control console (safety bar) is in the raised position.
- Insert the key into the ignition and turn it to the "ON" position. Wait for all indicator lights on the dashboard to cycle and extinguish.
- Turn the key to the "START" position. Release the key once the engine starts. Do not crank for more than 10 seconds.
- Allow the engine to warm up for a few minutes at low idle before engaging in operation.
Control Functions
The Bobcat E50 utilizes intuitive joystick controls for precise manipulation of the boom, arm, bucket, and swing functions. Foot pedals control track movement.
- Left Joystick: Controls boom up/down movement and machine swing left/right.
- Right Joystick: Controls arm in/out movement and bucket curl/dump.
- Left Pedal: Controls the left track for forward and reverse movement.
- Right Pedal: Controls the right track for forward and reverse movement.
Shutting Down the Machine
- Park the excavator on level, stable ground, away from traffic or hazards.
- Lower all attachments (boom, arm, bucket) completely to the ground.
- Allow the engine to idle for a few minutes to cool down gradually.
- Turn the ignition key to the "OFF" position.
- Remove the key and secure the machine to prevent unauthorized use.
Maintenance
Regular and scheduled maintenance is critical for maintaining the performance, reliability, and longevity of your Bobcat E50 excavator.
Daily Maintenance
- Check engine oil, hydraulic fluid, and coolant levels.
- Inspect tracks for damage, proper tension, and debris accumulation.
- Clean debris from the radiator and engine compartment to prevent overheating.
- Verify the functionality of all lights, gauges, and safety devices.
50-Hour / Weekly Maintenance
- Lubricate all designated grease points on the machine's pivot points.
- Check battery terminals for corrosion and ensure electrolyte level is correct.
- Inspect the engine air filter; clean or replace if necessary based on operating conditions.
- Check fan belt tension and condition.
250-Hour / Monthly Maintenance
- Change engine oil and replace the engine oil filter.
- Replace the fuel filter.
- Inspect all hydraulic hoses and fittings for leaks, cracks, or damage.
- Check the final drive oil level.
For comprehensive maintenance procedures and detailed service intervals, refer to the specific sections in the complete Bobcat E50 Operation & Maintenance Manual.
Troubleshooting Common Issues
This section provides guidance for diagnosing and resolving minor operational problems you may encounter.
Engine Does Not Start
- Check Fuel Level: Ensure there is sufficient fuel in the tank.
- Battery: Verify battery connections are secure and the battery is adequately charged.
- Safety Interlocks: Confirm the control console is raised and the parking brake is engaged, as these act as safety interlocks.
- Fuel Filter: Inspect for a clogged fuel filter, which can restrict fuel flow.
Loss of Hydraulic Power
- Hydraulic Fluid Level: Check the hydraulic fluid reservoir level. Low fluid can cause power loss.
- Hydraulic Filter: Inspect for a clogged hydraulic filter, which can impede fluid flow.
- Hoses/Fittings: Look for visible leaks or damaged hydraulic hoses and fittings.
For complex issues, persistent problems, or issues not covered here, contact an authorized Bobcat service technician for professional assistance.
Specifications
Key technical specifications for the Bobcat E50 Compact Excavator and this manual:
| Feature | Specification |
|---|---|
| Model | E50 Compact Excavator |
| Manual Part Number | 6989440 |
| Manual Pages | 194 |
| Serial Numbers Covered | S/N AG3N11001 & Above |
Note: Full and detailed specifications, including engine power, operating weight, and digging depth, are available in the complete Bobcat E50 Operation & Maintenance Manual.
Warranty Information
Specific warranty details for the Bobcat E50 Compact Excavator are provided at the time of purchase. Please refer to your official warranty document for comprehensive terms, conditions, and coverage periods applicable to your machine.
For warranty claims or inquiries, please contact your authorized Bobcat dealer directly.
Customer Support
For technical assistance, parts inquiries, service scheduling, or any other support needs, please contact your local authorized Bobcat dealer.
You can typically find dealer contact information on the official Bobcat website or through your original purchase documentation.
Disclaimer
The information provided in this manual is intended for general guidance and informational purposes only. Bobcat Company reserves the right to make changes to machine specifications, designs, and manual content without prior notice or obligation.
Always use genuine Bobcat parts for repairs and maintenance to ensure proper fit, function, and safety.





