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20 Automatic Standby Generator Owner’s Manual
Figure 4-2: Recommended Oil Based on Temperature
• SAE 30 above 32 ºF (0 ºC)
• 10W-30 between 40 ºF and -10 ºF (4 ºC and -23 ºC)
• Synthetic 5W-30 for all temperature ranges*
NOTE: *Synthetic oil should only be used after 100 hours of operation.
Any attempt to crank or start the engine before it has been properly serviced with the recommended oil may
result in an engine failure.
4.3.2 — Changing the Oil
1. Start the engine by pressing the MANUAL button on the control panel and allow the engine to run until it is thoroughly warmed up. Then,
press the control panel OFF button to shut down the engine.
2. A few minutes after the engine shuts OFF, when it has cooled slightly, remove the enclosure top lid by unscrewing the fasteners, and lift the
front panel off.
3. Remove the battery access panel by loosening the two hex head screws, disconnect the battery and remove the fuse.
4. Remove the drain hose from the retaining clamp and direct the hose end into a suitable container. See Figure 4-3.
5. Unscrew the drain hose cap and allow engine oil to drain. Remove dipstick/ fill plug to permit oil to drain faster. Ensure that the oil is drained
to a pan placed at lower level than the engine to ensure proper drainage.
6. After the oil has drained, replace the drain hose cap.
7. Secure the drain hose, in position, with the drain hose retaining clamp
8. Refill the engine with the proper recommended oil. For recommended oil, see Figure 4-2.
9. Reconnect the battery, secure the battery access panel, insert the fuse, and switch the unit to manual before starting the generator. Start the
engine, run for 1 minute, and check for leaks.
10. Shut down the generator and recheck the oil level. Add oil as needed. DO NOT OVER FILL.
11. Re-insert dipstick/fill cap.
12. Install the front panel and install the enclosure top lid. Tighten fasteners securely.
13. Press the control panel AUTO button.
14. Dispose of the used oil at a proper collection center.
*