1. Informasi Keselamatan
Operating a generator requires adherence to strict safety guidelines to prevent injury or property damage. Always read and understand the entire manual before operating the GENMAX GM12500iET generator.
Carbon Monoxide (CO) Safety
This generator is equipped with a built-in CO sensor for enhanced safety. The CO sensor is designed to shut down the generator if harmful levels of carbon monoxide accumulate in the operating area. However, this feature is a supplement and does not replace safe operating practices.
- Operate Outdoors Only: Always operate the generator outdoors in a well-ventilated area, far away from windows, doors, and vents to prevent carbon monoxide from entering enclosed spaces.
- Exhaust Direction: Ensure the exhaust is directed away from people and buildings.
- Alarm CO: Install battery-operated carbon monoxide alarms in your home or RV and check them regularly.
Keamanan Bahan Bakar
- Flammable Fuels: Gasoline, propane (LPG), and natural gas (NG) are highly flammable. Handle all fuels with extreme caution.
- DILARANG MEROKOK: Do not smoke or allow open flames near the generator or fuel storage areas.
- Pengisian bahan bakar: Always turn off the generator and allow it to cool before refueling with gasoline.
- Penyimpanan: Store fuels in approved containers in a well-ventilated area, away from ignition sources.
Keamanan Listrik
- Kondisi Kering: Jangan pernah mengoperasikan generator dalam kondisi basah, hujan, atau salju. Jaga agar tangan tetap kering saat menangani komponen listrik.
- Pembumian: Pastikan generator terhubung ke ground dengan benar sesuai dengan peraturan kelistrikan setempat.
- Perlindungan Beban Berlebih: Do not overload the generator. Utilize the circuit breakers to prevent damage.
- Gerai GFCI: The generator features GFCI outlets for protection against electric shock.
2. Produk Lebihview
The GENMAX GM12500iET is a powerful and versatile tri-fuel inverter generator designed for various applications, including home backup, RV use, and camping. It offers flexible fueling options, clean power output, and multiple starting methods.

Image: The GENMAX GM12500iET Tri-Fuel Inverter Generator shown with gasoline, propane, and natural gas options, highlighting its versatile fuel technology.
Fitur Utama
- Kemampuan Tiga Bahan Bakar: Operates on Gasoline (12500 surge, 10500 running watts), Propane (LPG 11500 surge, 9500 running watts), and Natural Gas (NG 10000 surge, 8500 running watts).
- Clean Inverter Power: Delivers less than 3% Total Harmonic Distortion (THD), making it safe for sensitive electronics.
- High-Capacity Output: Features a 458cc OHV engine with multiple outlets including 120V/240V 50A (NEMA 14-50R), 120V 30A, 120V 20A, 12V DC, and dual USB ports.
- Smart Digital Control: Digital display shows wattage, volumetage, frequency, runtime, fuel level, and alerts.
- 4-Way Start: Electric Start, Bluetooth App, 2-Wire Auto Start, and Recoil Backup.
- Mode Ramah Lingkungan: Automatically adjusts engine speed to load, reducing noise and extending runtime.
- Desain Portabel: Equipped with a robust frame, wheels, and a foldable handle for easy transport.
- Fitur Keselamatan: Includes a built-in CO sensor and comprehensive protection against overload, over/under voltage, korsleting, dan panas berlebih.

Image: The GENMAX GM12500iET generator is depicted as suitable for multiple scenarios, including home backup, RV travel, camping, and powering tools at job sites.
3. Pengaturan
Before starting the generator, proper setup is crucial for safe and efficient operation.
3.1 Membuka Kotak dan Inspeksi
- Keluarkan generator dan semua aksesori dari kemasan dengan hati-hati.
- Inspect the generator for any signs of shipping damage. If damage is found, contact customer support immediately.
- Verify all included components are present as listed in the 'What Comes in the Box' section.

Image: A visual representation of the items included in the GENMAX GM12500iET package, such as a spark plug wrench, screwdriver, remote control key, funnel, battery charger, NG quick connector, LPG hose, NG hose, and automatic start/stop cable.
3.2 Wheel and Handle Assembly
Attach the wheels and foldable handle using the provided hardware. This design facilitates easy transport of the generator.

Image: A person easily transporting the GENMAX GM12500iET generator across a lawn, demonstrating its easy transport design with a foldable handle and durable wheels.
3.3 Tambahkan Oli Mesin
- Temukan tutup pengisian oli/tongkat pengukur oli.
- Pastikan generator berada di permukaan yang rata.
- Using the provided funnel, slowly add the recommended engine oil (refer to specifications for type and capacity) until it reaches the upper mark on the dipstick. Do not overfill.
- Pasang kembali tutup pengisian oli dengan aman.
3.4 Menghubungkan Baterai
- Temukan kompartemen baterai.
- Connect the positive (+) battery cable (red) to the positive (+) terminal and the negative (-) battery cable (black) to the negative (-) terminal. Ensure connections are secure.
3.5 Koneksi Bahan Bakar
The GM12500iET supports three fuel types: Gasoline, Propane (LPG), and Natural Gas (NG).
- Bensin: Fill the fuel tank with fresh, unleaded gasoline. Do not use E85 or mixed fuels.
- Propana (LPG): Connect a standard propane tank to the dedicated LPG inlet using the provided LPG hose. Ensure all connections are tight to prevent leaks.
- Gas Alam (NG): Connect to a natural gas supply line using the provided NG hose and quick connector. Ensure connections are secure and leak-free.
Penting: Only use one fuel type at a time. Select the desired fuel using the fuel selector switch on the control panel.
Video: A detailed instructional video (22:55) covering the setup and initial preparation of the GENMAX GM12500iET Tri-Fuel Inverter Generator.
4. Petunjuk Pengoperasian
Follow these steps to safely start and operate your GENMAX GM12500iET generator.
4.1 Panel Kontrol Selesaiview
Familiarize yourself with the control panel components before operation.

Gambar: Close-up view of the generator's control panel, showing the digital display, main switch, fuel source switch, LPG/NG inlet, AC breakers, ground terminal, various AC outlets (50A, 30A, 20A), DC 12V outlet, USB ports, and the battery charging port.
4.2 Memulai Generator
The GM12500iET offers four starting methods:
- Starter Elektrik:
- Pastikan generator berada di permukaan yang rata dan semua sambungan terpasang dengan aman.
- Select the desired fuel type using the fuel source switch.
- Turn the main switch to the 'ON' position.
- Press and hold the 'START/STOP' button until the engine starts.
- Bluetooth App Start:
- Download the GENMAX app to your smartphone.
- Pair your device with the generator via Bluetooth.
- Follow the in-app instructions to start the generator remotely.
- 2-Wire Auto Start (for Home Backup):
- Connect the provided 2-wire auto start cable to a compatible automatic transfer switch (ATS) or home backup system.
- Ensure the 'AUTO GEN START SW' is in the 'ON' position.
- The generator will automatically start when power is lost and shut down when utility power returns.

Image: The GENMAX GM12500iET generator is shown providing power to an RV, illustrating the convenience of its Auto Gen Start feature with a communication cable for automatic starting and stopping.
- Recoil Backup Start:
- Ensure the main switch is 'ON' and fuel is selected.
- Tarik gagang starter putar dengan kuat dan perlahan hingga mesin menyala.
4.3 Pengoperasian Mode Hemat Energi
Engage Eco-Mode by pressing the 'ECO' button on the control panel. In Eco-Mode, the engine speed automatically adjusts to the electrical load, which reduces fuel consumption and noise levels, especially during light load conditions. This feature extends runtime and is ideal for quiet environments.

Image: The GENMAX GM12500iET generator operating outdoors, demonstrating its stable sine wave and low-noise technology, with a sound level indicator showing 62 dB at 7 meters.
4.4 Menghubungkan Beban Listrik
- Once the generator is running stably, plug in your electrical devices or connect to your transfer switch.
- Jangan melebihi daya kerja generator yang tertera.tage. Monitor the digital display for wattagkeluaran.
- Ensure all connected devices are in good working order and their power requirements are within the generator's capacity.
Video: An instructional video (4:28) demonstrating the operational procedures and features of the GENMAX GM12500iET generator.
5. Pemeliharaan
Regular maintenance ensures the longevity and reliable performance of your GENMAX GM12500iET generator.
5.1 Oli Mesin
- Periksa Level Oli: Before each use, check the engine oil level and add if necessary.
- Ganti Oli: Change the engine oil after the first 20 hours of operation, then every 100 hours or annually, whichever comes first. Refer to the specifications for recommended oil type.
5.2 Filter Udara
- Inspeksi: Inspect the air filter element every 50 hours or monthly.
- Pembersihan/Penggantian: Clean or replace the air filter element as needed, especially in dusty conditions. A dirty air filter can reduce engine performance and increase fuel consumption.
5.3 Busi
- Inspeksi: Periksa busi setiap 100 jam atau setiap tahun.
- Pembersihan/Penggantian: Clean or replace the spark plug if it is fouled or worn. Ensure the gap is set correctly according to the engine specifications.
5.4 Sistem Bahan Bakar
- Filter Bahan Bakar: Inspect and clean or replace the fuel filter as recommended in the full manual.
- Penyimpanan Bahan Bakar: For gasoline, use a fuel stabilizer if storing the generator for extended periods. Drain the carburetor if storing for more than 30 days without stabilizer.
5.5 Pembersihan dan Penyimpanan Umum
- Jaga generator tetap bersih dan bebas dari kotoran.
- Store the generator in a dry, well-ventilated area, away from direct sunlight and extreme temperatures.
- If storing for an extended period, perform all necessary maintenance, including draining fuel (for gasoline) or disconnecting propane/natural gas lines.
6. Penyelesaian masalah
This section provides solutions to common operational issues. For more complex problems, contact GENMAX technical support.
| Masalah | Kemungkinan Penyebab | Larutan |
|---|---|---|
| Mesin tidak mau menyala |
|
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| Low power output / Engine stalls under load |
|
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| Generator runs but no power output |
|
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| CO sensor shutdown |
|
|
Video: A brief instructional video (3:36) that may cover common troubleshooting steps or specific features of the generator.
7. Spesifikasi
Detailed technical specifications for the GENMAX GM12500iET Tri-Fuel Inverter Generator.
| Fitur | Spesifikasi |
|---|---|
| Nama Model | GM12500iET |
| Merek | GENMAX |
| Tipe Mesin | 4 Tak, OHV |
| Kapasitas Mesin | 458 Sentimeter Kubik |
| Jenis Bahan Bakar | Tiga Bahan Bakar (Bensin, Propana, Gas Alam) |
| Gasoline Starting Wattage | 12500 Watt |
| Gasoline Running Wattage | 10500 Watt |
| Propane (LPG) Starting Wattage | 11500 Watt |
| Propane (LPG) Running Wattage | 9500 Watt |
| Natural Gas (NG) Starting Wattage | 10000 Watt |
| Natural Gas (NG) Running Wattage | 8500 Watt |
| Volume Tangki | 6.1 Galon |
| Distorsi Harmonik Total (THD) | ≤3% |
| Noise Level (25% load) | Serendah 62 dB(A) |
| Dimensi Produk (P x L x T) | 30.9" x 22.63" x 29.33" |
| Berat Barang | 251.92 pon |
| Fitur Khusus | CO Sensor, Bluetooth, 2-Wire Auto Start, Eco-Mode |
| Komponen yang Termasuk | Spark Plug Socket Wrench, Wrench, Remote Control Key, Funnel, Battery Charger, NG Quick Connector, LPG Hose, NG Hose, Automatic Start/Stop Cable |
8. Garansi dan Dukungan
GENMAX is committed to providing reliable products and customer satisfaction.
8.1 Informasi Garansi
The GENMAX GM12500iET Tri-Fuel Inverter Generator is backed by a Garansi Terbatas 3 TahunGaransi ini mencakup kerusakan material dan pengerjaan dalam penggunaan dan servis normal. Harap simpan bukti pembelian Anda untuk klaim garansi.
For specific terms and conditions of the warranty, please refer to the warranty card included with your product or visit the official GENMAX weblokasi.
8.2 Dukungan Teknis
Should you encounter any issues or require assistance with your generator, GENMAX offers ongoing technical support. Please have your model number (GM12500iET) and serial number ready when contacting support.
Contact information for technical support can typically be found on the GENMAX website or in the documentation provided with your generator.





