Engine Break-In Requirements; Daily Walk Around Inspection; Engine And Generator Maintenance - Magnum MMG25FHZ Operating Manual

ENGINE BREAK-IN REQUIREMENTS

Note: During the first 20 hours of operation, avoid long periods of no load or sustained maximum load operation. If
the generator is to run for longer than five minutes without a load, shut the generator down.
The engine is supplied with engine break-in oil from the factory. Extra care during the first 100 hours of engine
operation will result in better performance and longer engine life. DO NOT exceed 100 hours of operation with the
break-in oil. Operate the engine at heavy loads (60-90% of maximum) as much as possible. If the engine has spent
significant time at idle, constant speed(s) and/or light load or if makeup oil is required, a longer break in period may
be needed. Consult the engine OPERATION AND MAINTENANCE MANUAL for a full description of necessary
procedures on the addition of oil and extension of the break-in period. Use the schedule table on page 36 as a guide
for regular maintenance intervals.

DAILY WALK AROUND INSPECTION

Look for conditions that could hinder performance or safety, such as (but not limited to) oil/coolant/fuel leakage,
blocked vents, loose/missing hardware and electrical connections.
Visually inspect the fan belt for cracks, fraying, stretching and that the belt is properly seated in pulley groves. Replace
the belt according to the manufacturer's recommendations.
Failure to perform a daily inspection may result in serious damage to the prime mover.
Note: At the 2500 hour/10 month service interval, it is recommended that the belt be removed and checked for wear.
While the belt is removed, inspect pulleys and bearings. Rotate and feel for hard turning or unusual sounds. If pulleys
or bearings need replacement contact engine manufacturer.

ENGINE AND GENERATOR MAINTENANCE

Poorly maintained equipment can become a safety hazard! In order for the equipment to operate safely and properly
over a long period of time, periodic maintenance and occasional repairs are necessary. NEVER perform even routine
service (oil/filter changes, cleaning, etc.) unless all electrical components are shut off. When servicing this equipment
always follow the instructions listed below.
• Before servicing the machine, make sure the engine start switch is turn to the OFF "O" position.
• The circuit breakers are open (OFF, "O").
• The emergency stop switch is activated (pushed in).
• The negative (-) terminal on the battery is disconnected.
• Attach a "DO NOT START" sign to the control panel. This will notify everyone that the unit is being ser-
viced and will reduce the chance of someone inadvertently trying to start the unit.
• If the unit is connected to a remote start or transfer switch, make sure the remote switch is also off and
tagged.
• Never wash the unit with a high pressure hose or with any kind of power washer.
• Never wash the engine block or fuel tank with a power washer or steam cleaner. Water may enter the
cabinet and collect in the generator windings or other electrical parts causing damage.
• If the unit is stored outside, check for water inside the cabinet and generator before each use. If wet, dry
the unit thoroughly before starting.
CAUTION
35