Engine Maintenance; Fuel And Oil Recommendations; Maintenance Chart - Briggs & Stratton 090600 Manual

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Fuel and Oil Recommendations

Fuel must meet these requirements:

• Clean, fresh, unleaded gasoline.

• A minimum of 87 octane / 87 AKI

(90 RON).

• Gasoline with up to 10% ethanol

(gasahol) or up to 15% MTBE (methyl

tertiary butyl ether) is acceptable.

NOTICE: Do not use unapproved gasoline, 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. 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.

Operation of the engine at altitudes below 2,500

feet (762 meters) with the high altitude kit is not

recommended.

Fresh Start

Fuel Cap

Some engines are equipped with a Fresh Start

fuel cap. The Fresh Start fuel cap is designed to

hold a cartridge (sold separately) that contains

fuel stabilizer.

Oil must meet these requirements:

• Briggs & Stratton warranty certified oils

are recommended for best performance.

• Other high-quality detergent oils are

acceptable if classified for service SF,

SG, SH, SJ or higher.

• Do not use special additives.

Outdoor temperatures determine the proper oil

viscosity for the engine.

Use the chart (Figure 1-1) to select the best