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To protect the fuel system from gum formation, mix in a
fuel stabilizer when adding fuel. See Storage. All fuel is
not the same. If you experience starting or performance
problems after using fuel, switch to a different fuel
provider or change brands. This engine is certified to
operate on gasoline. The emission control system for
this engine is EM (Engine Modifications).
1. Clean area around fuel fill cap, remove cap.
2. Slowly add regular unleaded fuel (A) to fuel
tank (B). Be careful not to overfill. To allow for fuel
expansion, do not fill above the bottom of the fuel
tank neck.
3. Install fuel cap and wait for any spilled fuel to
evaporate.
CAUTION!
Alcohol-blended fuels (called gasohol,
ethanol or methanol) can attract moisture, which leads
to separation and formation of acids during storage.
Acidic gas can damage the fuel system of an engine
while in storage.
To avoid engine problems, the fuel system should be
treated with a fuel preserver or emptied before storage
of 30 days or longer. If adding a fuel preserver, fill the
fuel tank with fresh fuel. If only partially filled, air in the
tank will promote fuel deterioration during storage. If
fuel preserver is not used, drain the fuel tank, start the
engine and let it run until the fuel lines and carburetor
are empty. Use fresh fuel next season. See Storage for
additional information.
NEVER use engine or carburetor cleaner products in
the fuel tank as permanent damage may occur.
High Altitude
At altitudes over 5,000 ft. (1524 m), a minimum
85 octane / 85 AKI (89 RON) gasoline is acceptable. To
remain emissions compliant, high altitude adjustment is
required. Operation without this adjustment will cause
decreased performance, increased fuel consumption,
and increased emissions. See a qualified Sears dealer
for high altitude adjustment information. Operation of
the engine at altitudes below 2,500 ft. (762 m) with the
high altitude kit is not recommended.
Lubricate O-Rings
Lubrication of o-rings is extremely important for
installation and operation. The use of a lubricant
(petroleum or synthetic grease) during assembly helps
seat o-rings properly and provides an improved seal. It
also helps protect the o-ring from damage by abrasion,
pinching or cutting and extends the life of the o-ring.
NOTICE ALWAYS apply a small amount of lubricant on
o-rings prior to assembling the garden hose to the pump
(C), high pressure hose (D), spray gun (E), and nozzle
extension (F).
A
B
Lubricate all connections shown below, following
these instructions:
1. Inspect and clean connecting surfaces prior to
2. Use lubricants sparingly during assembly; a light
3. Use a small brush or cotton swab to apply grease
9
E
F
C
D
lubrication and assembly.
film is all that is required.
directly to o-rings where they are not accessible
(QC fitting, M22 fitting).
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