Develon DX19-7 Mini Excavator Operation and Maintenance Manual (9DMM-31440)

This DX19-7 lives in tight spots—driveways, landscaping jobs, trenching around existing utilities—usually on and off trailers, mud, dust, and cold starts. This manual helps you set a maintenance rhythm so the machine starts, swings, and digs when you need it, instead of dying in the middle of a pour or a tight schedule. Say you’re halfway through trenching for irrigation and the boom starts moving jerky; with this book you can trace the problem, check the right points, and decide if you can finish the day or need to stop and fix it.

Applications & Use Cases

• Set up daily walk‑around checks so you inspect tracks, hoses, and pins before the first bucket, not after something blows.
• Plan service intervals so you drain, refill, and bleed systems on time, instead of guessing and hoping seals don’t start weeping during peak season.
• Use the procedures to isolate weird noises or slow hydraulics, then test and verify before you start throwing parts at it.
• Route your own grease and filter routine so every pivot and cylinder gets attention, not just whatever’s easy to reach.
• Align your transport and storage habits with what the book recommends, so it’ll usually fire right up after sitting.

FAQ

Q: Is this a PDF I can search on my phone or laptop?

A: It’s typically a PDF; you can usually search terms, zoom diagrams, and keep it on a tablet in the truck.

Q: Can I print just the pages I need for a jobsite binder?

A: Yeah, most folks print the sections they use most—maintenance schedules, fluid charts, basic troubleshooting—and keep them in a sleeve by the machine.

Safety Note

Always kill the engine, drop the attachment to the ground, and verify pressure is relieved before you put your hands near any hydraulic line or moving linkage.

Develon DX19-7 Mini Excavator Index:

Foreword – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-1
Emission-related components warranty
(USA and CANADA only) – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-2
Before servicing this machine – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-3
EC regulation approved – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-4
Safety labels – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-5
Machine data plate – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 0-18
Guide (direction, S/No, Symbol) – – – – – – – – – – – – – – – – – – – – – – – 0-19
1. SAFETY HINTS
1. California proposition 65 – – – – – – – – – – – – – – – – – – – – – – – – – – – – 1-1
2. Safety rules – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 1-2
2. SPECIFICATIONS
1. Major components – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-1
2. Specifications – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-2
3. Working range – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-4
4. Weight – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-6
5. Lifting capacities – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-7
6. Bucket selection guide – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-15
7. Undercarriage – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-16
8. Specification for major components – – – – – – – – – – – 2-18
9. Recommended oils – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2-21
3. CONTROL DEVICES
1. Canopy / Cab devices – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-1
2. Cluster – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-3
3. Switches – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-23
4. Levers and pedals – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-28
5. Heater – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-31
6. Others – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 3-32
4. OPERATION
1. Suggestion for new machine – – – – – – – – – – – – – – – – – – – – – – 4-1
2. Check before starting the engine – – – – – – – – – – – – – – – 4-2
3. Starting and stop the engine – – – – – – – – – – – – – – – – – – – – – – 4-3
4. Operation of the working device – – – – – – – – – – – – – – – – – 4-7
5. Traveling of the machine – – – – – – – – – – – – – – – – – – – – – – – – – – – – 4-8
6. Efficient working method – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 4-11
7. Operation in the special work sites – – – – – – – – – – – – 4-15
8. Normal operation of excavator – – – – – – – – – – – – – – – – – – – 4-17
9. Attachment lowering – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 4-18
10. Storage – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 4-19
11. RCV lever operating pattern – – – – – – – – – – – – – – – – – – – – – – 4-21
12. Handling the rubber tracks – – – – – – – – – – – – – – – – – – – – – – – – 4-22
13. Switching hydraulic attachment circuit – – – – – – 4-27
5. TRANSPORTATION
1. Preparation for transportation – – – – – – – – – – – – – – – – – – – – 5-1
2. Loading the machine – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 5-2
3. Fixing the machine – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 5-4
4. Loading and unloading by crane – – – – – – – – – – – – – – – – – – – 5-5
5. Dimension and weight – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 5-6
6. MAINTENANCE
1. Instruction – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-1
2. Tightening torque – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-5
3. Fuel, coolant and lubricants – – – – – – – – – – – – – – – – – – – – – – – 6-8
4. Maintenance check list – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-9
5. Maintenance chart – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-14
6. Service instruction – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-17
7. Electrical system – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 6-35
7. TROUBLESHOOTING GUIDE
1. Engine – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 7-1
2. Electrical system – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 7-2
3 Others – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 7-3
8. HYDRAULIC BREAKER AND QUICK COUPLER
1. Selecting hydraulic breaker – – – – – – – – – – – – – – – – – – – – – – – 8-1
2. Circuit configuration – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 8-2
3. Maintenance – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 8-3
4. Precaution when operating the breaker – – – – 8-4
5. Quick coupler – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 8-10

Develon