If the oil level is between the ADD and FULL marks, do not
start the engine. Contact an authorized dealer to have the oil
pressure problem corrected.
Add Fuel
Fuel must meet these requirements:
• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane / 87 AKI (91 RON). For high
altitude use, see below.
• Gasoline with up to 10% ethanol (gasohol) is acceptable.
NOTICE Do not use unapproved gasolines, such as E15
and E85. Do not mix oil in gasoline or modify the engine to
run on alternate fuels. Use of unapproved fuels will cause
damage to engine components, which will not be covered
under warranty.
To protect the fuel system from gum formation, mix a fuel
stabilizer into the fuel. Refer to 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 requirements:
• At altitudes over 5,000 feet (1524 meters), a minimum 85
octane / 85 AKI (89 RON) gasoline is acceptable.
• For carbureted engines, high altitude adjustment is
required to remain emissions compliant. Operation
without this adjustment will cause decreased
performance, increased fuel consumption, and increased
emissions. Contact a Briggs & Stratton Authorized
Service Dealer for high altitude adjustment information.
• Operation of the engine at altitudes below 2,500 feet
(762 meters) with the high altitude adjustment is not
recommended.
• For Electronic Fuel Injection (EFI) engines, no high
altitude adjustment is necessary.
WARNING
Fuel and its vapors are extremely flammable and explosive.
Always handle fuel with extreme care. Failure to observe
these safety instructions can cause fire or explosion which
could result in severe burns or death.
When Adding Fuel
• Turn engine off and let engine cool at least 3 minutes
before removing the fuel cap.
• Extinguish all cigarettes, cigars, pipes, and other sources
of ignition.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. To allow for expansion of the
fuel, do not fill above the bottom of the fuel tank neck.
• Keep fuel away from sparks, open flames, pilot lights,
heat, and other ignition sources.
8
• 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.
• Use only an approved fuel container.
5
1. Clean the fuel cap area of dirt and debris.
2. Remove the fuel cap (A, Figure 5).
3. Fill the fuel tank (B) with fuel. To allow for expansion of
the fuel, do not fill above the bottom of the fuel tank neck
(C).
4. Install the fuel cap.
Operator Seat Adjustment
1. With the engine stopped, loosen the two adjusting knobs
(A, Figure 6) and move the seat to the desired position.
After adjustment, tighten the knobs securely.