Operating Guide

Maintenance
Owner’s Manual for 60 Hz Air-Cooled Generators 25
Section 4: Maintenance
Maintenance
Regular maintenance will improve performance and
extend engine/equipment life. Generac Power Systems,
Inc. recommends that all maintenance work be per-
formed by an Independent Authorized Service Dealer
(IASD). Regular maintenance, replacement, or repair of
the emissions control devices and systems may be per-
formed by any repair shop or person of the owner’s
choosing. To obtain emissions control warranty service
free of charge, the work must be performed by an IASD.
See the emissions warranty.
Preparing for Maintenance
Proceed as follows to prepare unit for maintenance:
1. Set utility MLCB to OFF (OPEN).
2. Lift lid and set generator MLCB (generator discon-
nect) to OFF (OPEN).
3. If running during a utility outage, allow generator to
run and cool down for one minute with no load.
4. Press OFF button on controller.
5. Remove 7.5A fuse from control panel.
6. Remove front panel and intake side panel.
Performing Scheduled Maintenance
It is important to perform maintenance as specified in the
Service Schedule for correct generator operation.
Engine oil and oil filter must be changed, and valve clear-
ance adjusted (where applicable, see Engine) after first
25 hours of operation.
Emissions-critical maintenance must be performed as
scheduled in order for emissions warranty to be valid.
Emissions-critical maintenance consists of servicing the
air filter and spark plug(s) in accordance with Service
Schedule.
Controller will prompt for Schedule A or Schedule B
maintenance to be performed. Schedule A maintenance
consists of oil, oil filter, and battery check. Schedule B
maintenance includes oil, oil filter, battery check, air
cleaner, spark plug(s), and valve clearance (where appli-
cable, see Engine).
Since most maintenance alerts occur at the same time
(most have two year intervals), only one will appear on
control panel display at a time. Once first alert is cleared,
the next active alert will be displayed.
(000191)
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.