Operation G 50
52 wc_tx001049gb.fm
4.25 Engine Power Correction Factors
Performance data conditions
Performance data on John Deere engines are measured at the
following standard conditions:
• 744 mm (29.31 in.) of mercury dry air pressure
• 0% relative humidity
• 25°C (77°F) air intake temperature
• 40°C (104°F) fuel inlet temperature
Refer to the table below to estimate the engine power decrease in
percent as environmental factors vary from the standard conditions.
Engine power correction factors
4.26 Shutting down the generator
Check with other personnel on the jobsite and let them know that
power is being turned off. Make sure that the power shutdown will not
create any hazards by turning off devices such as pumps, heaters, or
lights that may need to be kept on.
4.26.1 Remove all loads from generator.
4.26.2 Open (turn to off “O”) main line circuit breaker.
4.26.3 Let engine run for approximately 5 minutes to allow it to cool down.
4.26.4 Move engine start switch to the off “O” position.
4.27 Cold Weather Start-Up
Successful cold weather starting requires that the battery be at peak
power, the correct weight motor oil is used, and the starter motor is in
good condition. The ECM will automatically activate the cold starting
aid and will display START DELAY as the heater heats.
Model
Fuel temp
rise of 1°C
(1.8°F)
Air temp
rise of -12°C
(10°F)
Altitude
rise of 305 m
(1000 ft)
above 3050 m
(10,000 ft)
Relative
humidity rise
of 10%
Altitude
rise of 305 m
(1000 ft)
below 3050 m
(10,000 ft)
G 50
None
(ECU
compensated)
0.50 4.00 0.07 0.5
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