Product Manual

Not for
Reproduction
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. 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 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.
Fire or explosion can cause severe burns or death.
When Adding Fuel
• Turn engine off and let engine cool at least 3 minutes
before removing the fuel cap.
• 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.
• 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.
2. Remove the fuel cap (A, Figure 6). Also see Features and
Controls section.
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. Reinstall the fuel cap.
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Start the Engine
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Starting the Engine
• Ensure that spark plug, muffler, fuel cap, and air cleaner
(if equipped) are in place and secured.
• Do not crank engine with spark plug removed.
• If engine floods, set choke (if equipped) to OPEN/RUN
position, move throttle (if equipped) to FAST position and
crank until engine starts.
WARNING
Engines give off carbon monoxide, an odorless, colorless,
poison gas.
Breathing carbon monoxide can cause nausea, fainting, or
death.
Fire or explosion can cause severe burns or death.
• Start and run engine outdoors.
• Do not start or run engine in enclosed area, even if doors
or windows are open.
1. Check the oil level (refer to Check and Add Engine Oil ).
2. Make sure equipment drive controls are disengaged.
3. Sit in the seat and lift UP the seat adjustment lever to lock
the seat in position.
4. Engage the parking brake. Push the brake pedal, pull UP
on the parking brake control, and release the brake pedal.
5. Disengage PTO switch by pushing IN.
6. Set the throttle/choke control to the CHOKE position.
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