Section 4: Maintenance; Maintenance; Maintenance Tasks; Daily Walk Around Inspection - Generac Power Systems MAC1.2G Owner's Manual

Section 4: Maintenance

Maintenance

Regular maintenance will improve performance and
extend engine/equipment life. Generac Mobile Products,
LLC recommends that all maintenance work be per-
formed by a Generac Mobile Products Authorized Ser-
vice Dealer (GMP ASD).
replacement, or repair of the emissions control devices
and systems may be performed by any repair shop or
person of the owner's choosing. To obtain emissions con-
trol warranty service free of charge, the work must be
performed by a GMP ASD. See the emissions warranty.

Maintenance Tasks

Daily checks must be performed when unit is operated
continuously for extended periods of time. Daily checks
and routine monthly checks can be performed by an
authorized operator.
NOTE: Normal maintenance, service, and replacement
of parts are the responsibility of the owner and are not
considered defects in materials or workmanship within
the terms of the warranty. It is strongly recommended
that equipment be periodically checked by a GMP ASD.

Daily Walk Around Inspection

Inspect for conditions that could hinder performance or
safety, such as (but not limited to) oil, coolant, and fuel
leakage, blocked vents, loose or missing hardware, and
improper electrical connections. Check for foreign matter
blocking vents and on top of unit. Perform any necessary
maintenance tasks. See
towing.
• Inspect outer cover for significant damage beyond
scuffs and small nicks.
•
Inspect for electrical wire abrasion.
• Inspect the fan belt for cracking, fraying, and
stretching. Verify the belt is properly seated in the
pulley grooves. See
• Check fluid levels.
•
Inspect electrical connectors, battery, and ground
points. Look for loose or missing hardware.
• Inspect all flexible rubber hoses for deterioration.
• Inspect hydraulic hoses for signs of wear.
•
Verify hoses are not crushed, bent, or twisted.
• Verify there are no cracks or corrosion.
• Inspect tires for unusual wear.
• Inspect ducting for damage or unusual wear.
Owner's Manual for Indirect Fired Heater
Regular maintenance,
Trailer Maintenance before
Maintenance Schedule.

Draining and Refilling the Oil

WARNING
Risk of burns. Allow engine to cool before
draining oil or coolant. Failure to do so could
result in death or serious injury.
WARNING
Potential of cancer. Prolonged or repeated contact
with used motor oil has been shown to cause cancer
in laboratory animals. Thoroughly wash exposed
areas with soap and water.
1. See Figure 2-2. Place container under the oil drain
hose (I).
2. Remove plug from oil drain hose.
3. See Figure 2-1. Open oil drain valve (H). Drain oil.
4. Close drain valve once draining is complete.
5. See engine manual for oil filter information.
6. See Figure 2-1. Remove filler cap (yellow) (F) on
the rocker arm cover.
7. Fill oil pan to specified level.
8. Replace filler cap.
NOTE: Do not overtighten filler cap. Doing so may dam-
age filler cap.
9. Start engine and let run for five minutes. Verify
there are no leaks.
10. Stop engine and let cool for approximately 10
minutes. Verify oil level is correct. (See
Level Check.) Repeat steps 6–9 until oil is
properly filled.
IMPORTANT NOTE: Do not overfill oil pan. Overfilling
may result in white exhaust smoke, sudden over
engine speed, or engine damage.

Adding Coolant

DANGER
Risk of poisoning. Do not use mouth to siphon
coolant. Doing so will result in death or serious
injury.
Maintenance
(000139)
(000127a)
Engine Oil
(000149)
17