Power Stroke PS903250, Operator'S Manual

Page: 20 / 48

Page 16 — English
Normal maintenance, replacement or repair of emission con-
trol devices and systems may be performed by any qualified
repair establishment or individual with original or equivalent
parts. Warranty and recall repairs must be performed by an
authorized service center; please contact customer service
for assistance.
WARNING
:
When servicing, use only recommended or equivalent
replacement parts. Use of any other parts can create a
hazard or cause product damage.
WARNING:
Before inspecting, cleaning, or servicing the machine,
shut off engine, wait for all moving parts to stop, and
disconnect spark plug wire and move it away from spark
plug. Allow 30 minutes of cool down time before perform-
ing any maintenance. Failure to follow these instructions
can result in serious personal injury or property damage.
NOTICE:
Periodically inspect the entire product for damaged,
missing, or loose parts such as screws, nuts, bolts,
caps, etc. Tighten securely all fasteners and caps and
do not operate this product until all missing or damaged
parts are replaced. Please contact customer service or
a qualified service center for assistance.
GENERAL MAINTENANCE
Keep the generator in a clean and dry environment where it
is not exposed to dust, dirt, moisture, or corrosive vapors.
Do not allow the cooling air slots in the generator to become
clogged with foreign material such as leaves, etc.
Do not use a garden hose to clean the generator. Water en-
tering the fuel system or other internal parts of the unit can
cause problems that will decrease the life of the generator.
To clean the unit:

Use a soft bristle brush and/or vacuum cleaner to loosen
and remove dirt and debris.

Clean air vents with low pressure air that does not exceed
25 psi.

Wipe exterior surfaces of the generator with a damp cloth.
CHECKING/REPLACING AIR FILTER
See Figure 14.
A dirty air filter will cause starting difficulty, loss of perfor-
mance, and shorten the life span of the engine. Check the
air filter monthly. For best performance, replace the air filter
at least once a year.
See the Replacement Parts List for
available sizes and part numbers of these items and call
customer service to order.

Release latch on top of air filter cover. Remove cover and
set aside.

Remove the air filter.
 Replace with a new air filter.

Replace the air filter cover and latch to secure.
NOTE : Do not run the generator without the air filter. Rapid
engine wear will result.
CHANGING ENGINE LUBRICANT
See Figure 15.
 Remove the oil cap/dipstick.

Place a container underneath the oil drain plug to collect
used lubricant as it drains.

Unscrew the oil drain plug and remove.

Allow lubricant to drain completely.
NOTE: Drain the lubricant while the engine is still warm
but not hot. Warm lubricant will drain quickly and more
completely.
WARNING
:
Do not change engine lubricant while it is hot. Accidental
contact with hot engine lubricant could result in serious
burns.
 Reinstall the oil drain plug and tighten securely.

Refill with lubricant following the instructions in the
Checking/Adding Lubricant
section. For amount of
lubricant needed to refill, see
Product Specifications
earlier in this manual or the accompanying engine manual,
if applicable.

Reinstall the oil cap/dipstick.
NOTE:
Used lubricant should be disposed of at an approved
disposal site. See your local oil retailer for more information.
SPARK PLUG MAINTENANCE
See Figure 16.
The spark plug must be properly gapped and free of deposits
in order to ensure proper engine operation. To check:

Remove the spark plug cap.
 Clean any dirt from around base of spark plug.

Remove spark plug using wrench (not included).
 Inspect spark plug for damage, and clean with a wire brush
before reinstalling. If insulator is cracked or chipped, spark
plug should be replaced. For replacement spark plug, see
Production Specifications
earlier in this manual or the
accompaning engine manual, if applicable.

Measure plug gap. The correct gap is 0.028−0.031 in.
(0.7-0.8 mm). To widen gap, if necessary, carefully bend
the ground (top) electrode. To lessen gap, gently tap
ground electrode on a hard surface.
 Seat spark plug in position; thread in by hand to prevent
cross-threading.
MAINTENANCE