Craftsman 360.7969 Operator's Manual page 8

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ENGINE
REPLACE SPARK PLUG
Change your spark plug each year to make your
engine start easy and run better. Set spark plug gap at
.020".
CLEAN FUEL FILTER
The fuel filter is located inside the fuel tank and is
attached to the fuel line. To clean, scrub fuel filter
surface with a small brush, Replace if deteriorated.
CLEAN ENGINE CYLINDER COOLING FINS
For best performance,keep dirt from accumulating
around the engine cooling fins. Clogged coolingfins
cause the engine to run hotter and shorten engine life.
Coolingfins may be cleaned using a toothbrushor stiff
bristle brush.
CLEAN SPARK ARRESTOR SCREEN (if installed)
After every 25 hours of use the spark arrestor screen
must be cleaned. Replace screen if detadorating(part
no. 2048391).
To clean:
1. Remove the four screws from the engine cover.
2. Remove the four screws from the end of the
muffler,
3. Remove the screen and clean with a wire brush.
Replace the screen if deteriorated.
4. Re-installthe screen and muffler end. Secure with
the four screws.
5. Re-installthe engine cover.
CARBURETOR ADJUSTMENT
To complywith emission regulations,the carburetor
mixtureis pre-set at the factory and can not be
adjustedwithout propertools. Any adjustment must be
performedby _ service center.
The idle speed'can be adjusted.The idle speed set
screw is located on the top of the unit and to the left of
the spark plug. It is indicated by the letter =r". To
adjustthe idle speed, turn clockwiseto increase and
counterclockwiseto decrease idle speed. Idle speed is
2100 + 100 RPM.
Prepare your backpack air blower for storage at the
end of the season or if the unitwill not be used for 30
days or more.
BEFORE STORING
1. Use soap and water to wipe down unit.
2. Be sure that all nuts, bolts, screws, and fasteners
are securelyfastened. Inspectfor damaged or
worn parts. Replace if necessary.
BLOWER TUBES
The straightblower tubes can be removed to ease
storage. Use care not to "kink" the throttlecable.
ENGINE
It is importantto prevent gum depositsfrom formingin
essentialfuel system parts such as the carburetor,fuel
filter, fuel hose, or tank duringstorage. Also, alcohol
blendedfuels, such as gasohol, ethanol or methanol,
can attractmoisture,which leads to separationand
formation of acids during storage. Acidic gas can
damage the fuel system of an engine while in storage.
Do not store gasolinefrom one season to the next.
Two-cycle mix ages quickly and can cause engine
damage. Replace your gasolinecontainerif it starts to
rust. Rust or dirt in your gasolinewill cause engine
problems.
To avoid engine problems, the fuel system shouldbe
emptied before storage of 30 days or more.
Followthese instructions:
1. Drain the fuel tank.
2. Start engine and let it run untilthe fuel linesand
carburetorare empty. (The engine willstop.)
3. Use fresh gas next season.
4. If you use a fuel stabilizer, the gasolinecan be left
in the tank. CAUTION: Never store air blower
insidea building with fuel in the tank{ Fumes can
concentrateand possibly reach a source of
ignition. Allow engine to cool before storage.
5. Remove spark plug.
6, Pour a few drops of oil intothe cylinder.
7. Pull the starter handle slowlyto distributethe oil.
8. Replace spark plug,
STORAGE TIPS
If possible, store your unit indoorsand cover itto give
it protectionfrom dust and dirt. Do not use plastic.
Plastic cannot breath, which will allowcondensationto
form and will cause your unit to rust. IMPORTANT:
Never cover air blower while engine and mufflerare
stillwarm.
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