Generac Power Systems MAC400HC, Owner'S Manual

Owner’s Manual for Flameless Heat Cart

17

Maintenance

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). Regular maintenance,
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

Check 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 the vents and on top of unit.

•

Inspect outer cover for significant damage beyond
scuffs and small nicks.

•

Inspect for wire abrasion.

•

Inspect the fan belt for cracking, fraying, and
stretching. Verify the belt is properly seated in the
pulley grooves.

•

Check coolant.

•

Check electrical connectors, battery, and ground
points. Look for loose or missing hardware.

•

Check all flexible rubber hoses for deterioration.

•

Check hydraulic hoses for signs of wear.

•

Verify hoses are not crushed, bent, or twisted.

•

Verify there are no cracks or corrosion.

•

Inspect ducting for damage or unusual wear.

Draining and Refilling the Oil

Proceed as follows to drain the oil:

1.

See 

Figure 4-1

. Place a suitable container under

unit. A drain hose (A) is attached to the drain port
and routed through the bottom of the enclosure to
drain the oil.

Figure 4-1. Oil Drain Hose

2.

Remove plug from oil drain/manifold.

3.

Open drain valve. Drain oil.

4.

See engine manual for oil filter information.

5.

Close drain valve.

6.

Replace plug in drain port on sub base.

7.

Dispose of waste oil in accordance with local,
state, or national codes or regulations.

8.

See 

Figure 4-2

. Remove filler cap (B) on either the

rocker arm cover or on the side of the engine.

(000139)

WARNING

Risk of burns. Allow engine to cool before 
draining oil or coolant. Failure to do so could 
result in death or serious injury.

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. 

(000127a)

WARNING

004404

A