Craftsman 247.772460 Operator's Manual page 10

FUeL ReCoMMeNdATioNS
Fuel must meet these requirements:
• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane/87 AKI (91 RON). High altitude use, see
below.
• Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE
(methyl tertiary butyl ether) is acceptable.
CAUTioN
Do not use unapproved gasolines, such as E85. Do not mix oil in
gasoline or modify the engine to run on alternate fuels. This will
damage the engine components and void the engine warranty.
To protect the fuel system from gum formation, mix a fuel stabilizer
into the fuel. See Storage. All fuel is not the same. If starting or
performance problems occur, change fuel providers or change brands.
This engine is certified to operate on gasoline. The emissions control
system for this engine is EM (Engine Modifications).
High Altitude
At altitudes over 5,000 feet (1524 meters), 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 Briggs & Stratton Authorized Dealer for
high altitude adjustment information.
Operation of the engine at altitudes below 2,500 feet (762 meters) with
the high altitude kit is not recommended.
ASSEMBLY
HoW To Add FUeL
Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Adding Fuel
• Turn engine off and let engine cool at least 2 minutes before
removing the fuel cap.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. Fill tank to approximately 1.5 inches (38
mm) below top of neck to allow for fuel expansion.
• Keep gasoline away from sparks, open flames, pilot lights, heat,
and other ignition sources.
• Check fuel lines, tank, cap, and fittings frequently for cracks or
leaks. Replace if necessary.
• If fuel spills, wait until it evaporates before starting engine.
1. Clean the fuel cap area of dirt and debris. Remove the fuel cap
(A, Figure 5).
2. Fill the fuel tank (B) with gasoline. To allow for expansion of the
gasoline, do not fill above the bottom of the fuel tank neck (C).
3. Reinstall the fuel cap.
A
C
B
10
WARNiNg
Figure 5