The Kobelco SK55SRX-6E is a compact radial swing excavator with an EPA Tier 4 Final Yanmar engine. Its instrument cluster provides intuitive alerts to ensure safe and efficient operation on tight job sites, with both critical and advisory indicators.
Kobelco SK55SRX-6E Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical system failure detected on the SK55SRX-6E requiring immediate engine shutdown to prevent damage. | Stop engine safely and contact Kobelco dealer for diagnosis. | |
| Check Engine (MIL) | AMBER | Emissions or engine performance fault on the Yanmar 3TNV88F engine; may reduce power. | Have diagnostic code read by certified technician; operate in reduced load if necessary. | |
| Engine Oil Pressure | RED | Low oil pressure can cause severe engine wear; potential oil leak or pump failure. | Stop engine immediately, check oil level and filter. | |
| Battery Charge | RED | Charging system voltage low; alternator or battery connection issue. | Check alternator belt tension and battery connections; test alternator output. | |
| Coolant Temperature | RED | Engine coolant overheated; possible cooling system blockage or low coolant. | Allow engine to cool, check coolant level and radiator fan operation. | |
| Hydraulic Oil Temperature | AMBER | Hydraulic oil temperature is high; reduces system efficiency and component life. | Reduce load, allow cooldown, check hydraulic oil level and cooler. | |
| Water in Fuel | AMBER | Water detected in the fuel/water separator; can damage injectors. | Drain water from separator bowl and replace fuel filter if needed. | |
| Air Filter Restriction | AMBER | Air filter clogged; reduces engine power and fuel economy. | Replace air filter element as per maintenance schedule. | |
| Glow Plug (Preheat) | AMBER | Glow plugs are preheating the intake air for cold start. | Wait for light to turn off before cranking engine. | |
| Seat Belt | RED | Operator seat belt is not fastened; safety requirement. | Fasten seat belt before operating. | |
| Parking Brake | AMBER | Parking brake is engaged; machine cannot move. | Release parking brake before travel. | |
| Swing Lock | BLUE | Upper structure swing is locked for transport or parking. | Disengage swing lock for normal operation. | |
| Work Lights | GREEN | Work lights are turned on for improved visibility. | This is informational; no action required. | |
| Beacon / Rotating Light | GREEN | Rotating beacon is active for site safety warning. | Informational; ensure beacon functions properly. | |
| Service / Hour Meter | AMBER | Scheduled maintenance interval approaching based on engine hours. | Perform required maintenance per operator's manual. |
15 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant level
- Faulty thermostat
- Blocked radiator or cooling fan failure
What to do
Stop engine, inspect coolant level and radiator fins for debris. Clean radiator and check fan belt tension. If persists, replace thermostat.
Low Oil Pressure
Common causes
- Low engine oil level
- Oil pump wear or failure
- Clogged oil filter
What to do
Stop engine immediately, check oil level and top up with recommended 15W-40 oil. Replace oil filter with genuine Kobelco part.
Hydraulic System Failure
Common causes
- Low hydraulic oil level
- Hydraulic pump failure
- Clogged hydraulic oil filter
What to do
Check hydraulic oil level and refill with Kobelco genuine hydraulic oil. Replace filter and inspect hoses for leaks.
Battery Not Charging
Common causes
- Loose alternator belt
- Faulty alternator
- Corroded battery terminals
What to do
Tighten alternator belt, clean battery terminals with a wire brush, and test alternator output (should be 13.5-14.5V with engine running).
Fuel System Contamination
Common causes
- Water in fuel
- Dirty fuel
- Clogged fuel filter
What to do
Drain water from fuel/water separator, replace fuel filter with Kobelco genuine element, and use clean ULSD fuel.
Frequently Asked Questions
What does the red master warning light indicate on the SK55SRX-6E?
It signals a critical fault requiring immediate engine shutdown and service. Refer to the operator's manual for specific fault codes or contact your Kobelco dealer.
How do I reset the service hour meter reminder?
The hour meter tracks total machine hours and is non-resettable. Service reminders must be cleared by a Kobelco dealer using the diagnostic tool.
Can I operate the excavator with the hydraulic oil temperature light on?
No, continued operation may damage hydraulic components. Reduce load and allow cooldown; if the light stays on, have the system inspected.
Why does my check engine light come on intermittently?
Intermittent illumination may indicate a loose connection or temporary emissions fault. If persistent, have the diagnostic code read by a Yanmar technician.
What type of fuel should I use in the SK55SRX-6E?
Use ultra-low sulfur diesel (ULSD) with a cetane rating of 45 or higher. Avoid biodiesel blends above B5 to prevent fuel system issues.
How often should I replace the hydraulic oil?
Replace hydraulic oil every 1000 hours as per the maintenance schedule. Use only Kobelco genuine hydraulic fluid for optimal performance.