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• At altitudes over 5,000 feet (1,524 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, high altitude
adjustment is not 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
• Stop the engine and let the engine cool at least 3
minutes before you remove 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.
• Check fuel lines, tank, cap, and fittings frequently for
cracks or leaks. Replace if necessary.
• If fuel spills, wait until it evaporates before you start the
engine and avoid creating any source of ignition.
• Use only an approved fuel container.
1. Remove unwanted material from the fuel cap area.
2. Remove the fuel cap (A,Figure6).
3. Fill the fuel tank (B)with fuel. DO NOT fill above the
bottom of the fuel tank neck (C).
4. Install the fuel cap.
Start the Engine
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When you start the engine:
• Make sure that spark plug, muffler, fuel cap, and air
cleaner (if equipped) are in place and secured.
• Do not crank the engine with spark plug removed.
• If engine floods, set the 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 the engine outdoors.
• Do not start or run the engine in enclosed area, even if
doors or windows are open.
1. Check the oil level. SeeCheck and Add Engine Oil.
2. Make sure that the 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 control. Push the brake pedal,
pull OUT the parking brake control, and release the brake
pedal.
5. Push in the PTO switch to disengage it.
6. Set the throttle/choke control to the CHOKE position (if
equipped).
7. Make sure that the starter insert is installed in the ignition
switch. Push the start button two times and hold until the
engine starts.
8. After the engine starts, move the throttle/choke control to
half speed. Turn the engine ON for at least 30 seconds.
This will warm the engine.
9. Set throttle/choke control to the FAST position.
In the event of an emergency, remove the starter insert key to
immediately stop the tractor and engine.
Note:If the engine does not start after repeated attempts,
contact an authorized service dealer.
Stop Tractor and Engine
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
• Do not choke the carburetor to stop the engine.
1. Release the ground speed pedals to return to the
NEUTRAL position. SeeFeatures and Controls.
2. Disengage the PTO switch, then wait for all moving parts
to stop.
3. Move the throttle control(or throttle/choke control) to
SLOW position and turn the ignition key to the OFF
position.
4. Remove the key.
5. Engage the parking brake. Push the brake pedal, pull
UP on the parking brake control, and release the brake
pedal.