Develon DX27Z-7 Mini Excavator Operation and Maintenance Manual (950106-02726CE) (1001 and Up)
Out on small construction sites, tight residential lots, or farmyards, this DX27Z-7 mini excavator usually lives in mud, dust, and bad weather. This operation and maintenance manual keeps that machine on a steady rhythm—what to check every day, what to service after so many hours, and how to spot trouble before it strands you. Picture this: you’re in peak season, you fire it up, and instead of chasing a mystery hydraulic leak, you already know where to trace lines, inspect fittings, and verify fluid levels because you’ve been following the schedule.
Applications & Use Cases
- Set up a daily walk-around so you trace hoses, check tracks, test lights, and verify fluid levels before the machine ever leaves the trailer.
- Plan your weekly and monthly services, so you don’t skip filter changes or grease points that usually fail right when you’re booked solid.
- Use the manual to isolate odd noises or warning lights, then align your checks with the suggested inspection order instead of guessing.
- Follow the step-by-step procedures to bleed air from fuel or hydraulics after a repair, so you don’t cook a pump or injector.
- Route your maintenance around seasons—light work in winter, heavier services before digging season—using the hour-based intervals as a guide.
FAQ
Q: Is this manual searchable on a phone or tablet?
A: If you’ve got the PDF version, you can usually search by keyword, which makes it easier to find procedures right on the job.
Q: Can I just print a few sections for the shop?
A: Yeah, most folks print the service intervals, lubrication charts, and key procedures, then keep the full file on a laptop or tablet for backup.
Safety Note
Always kill the engine, drop the attachment to the ground, and relieve hydraulic pressure before you inspect, bleed, or work on any part of the system.
Develon DX27Z-7 Mini Excavator Index:
- DX27Z-7 / DX35Z-7
- Revision
- Table of Contents
- Foreword
- Intended Use
- Engine and Emission Control System Maintenance
- Machine Capacity
- Attachments
- Product Identification Number (PIN)
- Component Serial Numbers
- Engine Identification
- Your Machine Serial Numbers
- Safety Messages
- EC DECLARATION OF CONFORMITY
- UK DECLARATION OF CONFORMITY
- Regulation (EU) 2017/654 Annex XV
- Engine operation and maintenance
- Malfunctions & Inducement
- DEVELON Fleet Management System General Information and Privacy Notice
- Safety
- Safety Decals
- Information and Location for Safety Decals
- General
- Safe Operation is Operator’s Responsibility
- Know Your Machine
- Proper Work Tools and Attachments
- Pressurized Fluids
- Flying or Falling Objects
- Personal Protective Equipment (PPE)
- Correction of Machine Problems
- Crushing and Cutting
- Hot Coolant and Oils – Burn Prevention
- Fire and Explosion Prevention
- Fire Extinguisher and First-aid Kit (Emergency Medical Kit)
- Electrical System and Electrical Shock
- Roll-over Protective Structure (ROPS/ TOPS)
- Regulation 8.35(2) of the Mines Safety and Inspection Regulations (1995)
- Transportation
- Obey State and Local Over-the-Road Regulations
- Loading and Unloading
- Transporting Machine
- Operation
- Before Engine Starting
- Work Site
- Mounting/Dismounting
- Cleaning
- Operator Station
- Seat Belt
- Visibility Information
- Boost Starting or Charging Batteries
- Starting Engine
- Swinging or Traveling
- Lifting and Digging
- Operation on Slopes
- Towing
- Attachment
- Equipment Lowering with Engine Stopped
- Engine Stop
- Parking Machine
- Long Term Storage
- Before Storage
- During Storage
- After Storage
- Maintenance
- Warning Tag
- Cleaning
- Proper Tools and Clothing
- Disassembling Precautions
- Use of Lighting
- Fire and Explosion Prevention
- Burn Prevention
- Rubber That Contains Fluorides
- Rubber and Plastics
- Welding Repairs
- Warning for Counterweight and Front Attachment Removal
- Lock Inspection Covers
- Working on Machine
- Accumulator
- Compressed Air
- Track Tension Adjustments
- Supports and Blocking for Work Equipment
- High-pressure Lines, Tubes and Hoses
- Battery
- Environment and Circumstances
- Work Site Areas Requiring Extra Caution
- High-voltage Cables
- Underground Operation
- Working in Water
- Working in Contaminated Environment
- Operation in Extreme Conditions
- Exhaust Ventilation
- Asbestos Information
- Silica Dust Information
- Disposal of Hazardous Materials
- Sound
- Vibration Information
- Operating Controls
- Component Locations
- Operator’s Area
- Operational Controls and Panels
- 1. Starter Switch
- 2. Heater and Air Conditioner Control Panel
- 3. Travel Speed Selector Switch
- 4. Quick Coupler Switch (If Equipped)
- 5. Engine Speed Control Dial
- 6. Rotating Beacon Switch (If Equipped)
- 7. Keypad
- 8. 12V Power Socket
- 9. USB Charger (If Equipped)
- 10. Shear Switch (If Equipped)
- 11. Breaker Button
- 12. Rotating Switch
- 14. Horn Button
- 15. Safety Lever
- 16. Display Monitor
- 17. Hour Meter
- Display Monitor (Type 1)
- Functional Check
- Setting a Password
- 1. Fuel Gauge
- 2. Engine Coolant Temperature Gauge
- 3. Hydraulic Oil Temperature Gauge
- 4. Tachometer
- 5. Audio Display
- 6. Digital Clock
- 7. Operating Mode/Flow Setting Selector Button
- 8. Menu Selector Button
- 9. Back Button
- 10. Mode Symbol Display
- 11. Indicator Display
- 12. Display Warning Symbols
- Warning Pop-Up Messages
- Display Monitor (Type 2)
- Functional Check
- Setting a Password
- 1. Fuel Gauge
- 2. Engine Coolant Temperature Gauge
- 3. Hydraulic Oil Temperature Gauge
- 4. Tachometer
- 5. Digital Clock
- 6. Operating Mode Selector Button
- 7. Menu/ESC Button
- 8. Home Button
- 9. Camera Button
- 10. Flow Setting Selector Button
- 11. Up Arrow Button
- 12. Down Arrow Button
- 13. Selection Button
- 14. Mode Symbol Display
- 15. Indicator Display
- 16. Display Warning Symbols
- Warning Pop-Up Messages
- User Menu (Type 1)
- User Menu – Access and Escape Methods
- User Menu (Type 2)
- User Menu – Access and Escape Methods
- Heater and Air Conditioner Control Panel
- Location of Controls and Vents
- Control Panel
- Additional Operating Instructions
- Miscellaneous Electrical Devices
- Cabin Light
- Safety Lever
- Circuit Breaker (30A, 80A)
- Fuse Boxes
- DAB (Digital Audio Broadcasting) Audio
- Stereo
- Seat Adjustment
- 1. Forward/Backward Adjustment
- 2. Suspension Adjustment
- 4. Reclining Position Adjustment
- 5. Lumbar Adjustment
- 6. Seat Heater Switch
- Seat Belt
- Seat Belt Locking and Unlocking
- Engine Emergency Stop Switch
- Emergency Exit Glass Breaking Tool
- Miscellaneous Convenience Devices
- Front Windows
- Door Side Latch
- Cabin Storage Compartments
- Sunglasses Case
- Miscellaneous Access Covers and Doors
- Operation
- To Operate a New Excavator
- Starting and Stopping Engine
- Inspection Before Starting Engine
- Operational Checks Before Starting Engine
- Engine Start
- Cold Weather Starting
- Hydraulic System Warm-up
- Hydraulic System Warm-up – Cold Weather
- Stopping Engine
- Checks and Maintenance After Stopping Engine
- Safety Lever
- Travel
- Travel Speed Control
- Travel Control Lever Operation
- General Travel Instructions
- Operating Instructions
- Engine Speed Control
- Change Machine Control Pattern By Selector Valve (If Equipped)
- Work Levers (Joysticks) (ISO Pattern)
- Work Levers (Joysticks) (BHL Pattern)
- Dozer Blade (If Equipped)
- Operating Precautions
- Working in Water
- Escaping From Mud
- Parking Excavator
- Towing Procedure
- Attachments
- Bucket Replacement and Reversal
- Replacement
- Reversal (If Applicable)
- Hydraulic Attachments (If Equipped)
- Breaker Operation
- Shear Operation
- Rotating Operation
- Boom Swing Operation
- Quick Coupler Operation
- Lifting Objects
- Lifting Objects with Quick Coupler
- Inspection, Maintenance and Adjustment
- Maintenance Information
- Machine Setup Position for Maintenance
- Handling Oil, Fuel, Coolant
- Oil
- Fuel
- Engine Oil
- Grease
- Coolant and Water for Dilution
- Filters
- Electrical System Maintenance
- Recommend Fuel, Coolant, and Lubricant
- Lubrication
- Symbols for “Lubrication and Service Chart”
- Fluid Capacities
- Table of Recommended Lubricants
- Maintenance Intervals
- 10 Hour / Daily Service
- Boom, Arm and Front Attachment Pins – Lubricate
- Dozer Blade Pin – Lubricate
- Engine Oil Level – Check
- Hydraulic Oil Level – Check
- Fuel Level – Check
- Pre Fuel Filter and Water Separator – Check
- Coolant Level – Check
- Window Washer Liquid Level – Check
- Bucket Teeth and Side Cutters – Inspect
- Cooling Fan Blade – Inspect
- Air Intake System and Emission Control System – Check
- Seat Belt – Inspect
- Mirrors – Check
- Structure – Inspect
- All Switches and Travel Alarm (If Equipped) – Check
- Main Fuel Filter – Check
- Hydraulic Oil Tank Breather -Check
- Safety Lever – Check
- Exterior Lights, Horn, Control Console Indicator, Gauge Panel – Check
- Overall of Engine Condition – Check
- All Controls and Linkages – Check
- 50 Hour / Weekly Service
- Perform All Daily Service Checks
- Arm and Bucket Joint Pins – Lubricate
- Dozer Blade Pin – Lubricate
- Swing Bearing – Lubricate
- Boom Swing Bracket – Lubricate
- Boom Swing Cylinder – Lubricate
- Fuel Tank Water and Sediment – Drain
- Engine Fan Belt – Check
- Track Assemblies (Links, Shoes, Rollers, Idlers) – Inspect
- 250 Hour / Monthly Service
- Perform All Daily and 50 Hour Service Checks
- Boom and Arm Joint Pins – Lubricate
- Engine Oil and Filter – Replace
- Pre Fuel Filter and Water Separator – Clean
- Main Fuel Filter – Replace
- Engine Fan and Alternator Belts – Check
- Hydraulic Oil Return Filter – Replace
- Pin and Bushings of the Front End Attachment – Inspect
- Battery Fluid – Check
- Bolts and Nuts – Inspect
- Fuel System Hose Clamps – Inspect
- 500 Hour / 3 Month Service
- Perform All Daily, 50 and 250 Hour Service Checks
- Track Spring – Check
- Swing Gear and Pinion – Lubricate
- Air-Conditioning Outer Filter – Clean
- Air-Conditioning Inner Filter – Clean
- Air Cleaner Outer Filter – Clean
- Cooling System – Clean
- Final Drive Gear Oil – Check
- Final Drive Gear Oil – Change
- 1,000 Hour / 6 Month Service
- Perform All Daily, 50, 250 and 500 Hour Service Checks
- Hydraulic Oil Return Filter – Replace
- Final Drive Gear Oil – Change
- Air-Conditioning Outer Filter – Replace
- Air-Conditioning Inner Filter – Replace
- Check and Adjust Engine**
- 2,000 Hour / Yearly Service
- Perform All Daily, 50, 250, 500 and 1,000 Hour Service Checks
- Hydraulic Oil – Replace
- Air Cleaner Outer and Inner Filter – Replace
- Coolant – Change
- Alternator and Starter** – Check
- Rubber Antivibration Shock Mounts – Check
- Perform and Record Results of Cycle Time Tests
- Inspect Machine to Check for Cracked or Broken Welds or other Structural Damage
- Adjust Valve Clearance** – Check
- Head Bolt Torques – Check
- 4,000 Hour / Biennial Service
- Major Parts – Periodic Replacement
- Hydraulic Oil Suction Filter – Clean
- 12,000 Hour / 6 Year Service
- Hose In-service Lifetime Limit (European Standard ISO 8331 and EN982 (CEN))
- Air-Conditioning System
- Control Panel – Check
- Air Conditioner Hoses – Check
- Condenser – Check
- Compressor Magnetic Clutch – Check
- Bucket
- Bucket Tooth – Replace
- Bucket O-ring – Replace
- Bucket Shimming Procedures
- Bucket – Replace
- Electrical System
- Engine Cooling System
- General
- Antifreeze Concentration Tables
- Table of Standards for Allowed Tap Water
- Handling of Accumulator
- Track Tension
- Venting and Priming Hydraulic System
- Main System Pump
- Hydraulic Cylinders
- Travel Motor
- General Venting
- Maintenance in Special Conditions
- Transportation
- Loading and Unloading
- Warning for Counterweight and Front Attachment Removal
- Trailer Loading/Unloading Procedures
- Lifting Machine
- Specification
- Standard Specification
- Overall Dimensions
- Ground Pressure
- Digging Force
- Arm – Tearout Force
- Bucket – Breakout Force
- Working Range
- Excavator Rated Lift Capacity Tables
- Approximate Weight of Workload Materials
- Index
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