Bolens 247.77010 - Manual (Page 11)

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 lines 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 perfor­
mance. The air cleaner consists of a foam filter.
Never run the engine without an air cleaner com­
pletely 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 distrib­
ute 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.
A
WARNING: Temperature of muffler and
nearby areas may exceed 150° F(65°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 10. Spark plug replace­
ment is recommended at the start of each sea­
son. Refer to engine parts list for correct spark
plug type.
NOTE: Do not sandblast spark plug. Sparkplug
should be cleaned by scraping or wire brushing and
washing with a commercial solvent.
SERVICE MUFFLER
• Inspect muffler periodically, and replace if nec­
essary.
• 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.
A
WARNING: Do not operate the Yard Vac­
uum 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 ade­
quate cooling and engine speed.
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