Develon DX35Z-7K Mini Excavator Operation and Maintenance Manual (950106-04241A-EN) (1001 and Up)
This DX35Z-7K usually lives on tight jobsites—residential digs, utilities in the street, farm lanes—where you’re bouncing between trenching, backfilling, and loading trucks. This manual helps you set a maintenance rhythm so the machine starts, tracks, and digs the same way every day, instead of surprising you when you’re buried in work. Think cold Monday morning: you trace a no-start to a simple fuel issue because you’d already checked batteries, filters, and fluids the way the book lays it out.
Applications & Use Cases
- Set up daily walk-arounds so you check tracks, hoses, and fluid levels in the same order, and catch leaks or loose hardware before they strand you.
- Plan 250/500-hour services so you can route filters, oil, and grease ahead of time and schedule downtime when the machine’s not booked solid.
- Trace weird hydraulic behavior—slow boom, jerky swing—by following step-by-step checks to isolate whether it’s operator setting, low fluid, or something that actually needs a shop.
- Verify control and travel settings after a new operator hops on, so the machine reacts how you expect and doesn’t fight you near foundations or utilities.
- Inspect and test cooling and electrical systems before hot season, so you’re not bleeding time dealing with nuisance shutdowns in August.
FAQ
Q: Is this a PDF I can search on my phone or laptop?
A: Yes, it’s typically a searchable PDF, so you can jump to sections by keyword instead of flipping pages.
Q: Can I print just the service bits to keep in the truck?
A: You usually can; most folks print the maintenance schedules and key procedures, then keep the full file on a device.
Safety Note
Always lower the attachment, relieve hydraulic pressure, and kill the engine before you inspect, test, or bleed any system.
Develon DX35Z-7K Mini Excavator Index:
- DX35Z-7K
- 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
- 20. Rotating and Boom Swing Switch (If Equipped)
- 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
- Cooling System – Clean
- 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
- Pre Fuel Filter and Water Separator – Clean
- 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
- Engine Oil and Filter – Replace
- Pre Fuel Filter and Water Separator – Replace
- Main Fuel Filter – Replace
- Air-Conditioning Outer Filter – Clean
- Air-Conditioning Inner Filter – Clean
- Air Cleaner Outer Filter – 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
Develon
