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13
TO DRAIN OIL
Drain oil while engine is warm. Follow the instructions
given below.
• Drain the gas tank, start the engine and let it run
until the fuel line and carburetor are empty.
• Remove oil fill dipstick.
• Tip unit on its side to drain through the oil fill tube.
• When engine is drained of all oil, refill with
approximately 20 oz. of fresh oil. Refer to Gas
And Oil Fill-up in OPERATION section.
• Replace dipstick.
SERVICE AIR CLEANER
The air cleaner prevents damaging dirt, dust, etc.,
from entering the carburetor and being forced into the
engine and is important to engine life and
performance. The air cleaner consists of a foam filter.
Never run the engine without an air cleaner
completely assembled.
To Service Air Cleaner:
• Remove foam filter from plastic housing on top of
engine.
• Wash in water and detergent solution, and
squeeze (do not twist) until all dirt is removed.
• Rinse thoroughly in clear water.
• Wrap in a clean cloth and squeeze (do not twist)
until completely dry, or allow to air dry.
• Saturate with engine oil and squeeze to distribute
oil and remove excess oil.
• Replace foam filter in plastic housing
NOTE: If the foam filter is torn or damaged in any
way, replace it.
WARNING:
WARNING: Temperature of
muffler and nearby areas may exceed
150
o
F(65
o
C). Avoid these areas.
SERVICE SPARK PLUG
• Clean the spark plug and reset the gap to .030" at
least once a season or every 50 hours of
operation. See Figure 13. Spark plug
replacement is recommended at the start of each
season. Refer to engine parts list for correct
spark plug type.
NOTE: Do not sandblast spark plug. Spark plug
should be cleaned by scraping or wire brushing and
washing with a commercial solvent.
Figure 13
SERVICE MUFFLER
• Inspect muffler periodically, and replace if
necessary.
• If your engine is equipped with a spark arrester
screen assembly, remove after every 50 hours of
use for cleaning and inspection. Replace if
damaged.
WARNING: Do not operate the Yard
Vacuum without a muffler or tamper with
the exhaust system. Damaged mufflers
or spark arresters could create a fire
hazard.
CLEAN ENGINE
• Clean engine by removing dirt and debris with a
cloth or brush.
• Frequently remove grass clippings, dirt, and
debris from cooling fins, air intake screen, levers,
and linkage. This will help ensure adequate
cooling and engine speed.
Spark Plug
.030" Feeler Gauge