Inspect the muffler and spark arrester
Replace the spark plugs
Replace the fuel filter
Clean the air cooling system
*Whichever comes first.
**Clean more often in dusty conditions or when airborne material is
present.
Electronic Fuel Management System
The Electronic Fuel Management System monitors engine
temperature, engine speed, and battery voltage to adjust
the choke during engine starting and warm up. There are no
adjustments on the system. If starting or operation problems
occur, contact an Authorized Briggs & Stratton Dealer.
NOTICE Make sure to follow the steps below or the
Electronic Fuel Management System could be damaged.
• Never start the engine if the battery cables are loose.
• Turn the key to the OFF position or remove the starter
switch before disconnecting, removing and / or installing
the battery.
• Never use a battery charger to start the engine.
• Never disconnect the battery cables while the engine is
running.
• When connecting the battery cables, first connect the
positive (+) cable and then connect the negative (-) cable
to the battery.
• When charging the battery, turn the ignition switch to the
off position and disconnect the negative (-) battery cable
from the battery.
• Do not spray water directly on the Electronic Control Unit.
Charge the Battery
WARNING
Keep open flames and sparks away from the battery; the
gasses coming from it are highly explosive. Ventilate the
battery well during charging.
A dead battery or one too weak to start the engine can be the
result of a defect in the charging system or other electrical
component. If there is any doubt about the cause of the
problem, see your dealer. If you need to replace the battery,
follow the steps under Clean the Battery and Cables.
To charge the battery, follow the instructions provided by the
battery charger manufacturer as well as all warnings included
in the safety rules sections of this book. Charge the battery
until fully charged. Do not charge at a rate higher than 10
amps.
ENGINE
Battery Maintenance
WARNING
When you disconnect the battery cables, first disconnect
the negative (-) battery cable and then disconnect the
positive (+) battery cable. When you connect the battery
cables, first connect the positive (+) battery cable and then
connect the negative (-) battery cable. If not done in this
order, the positive terminal can be shorted to the frame by a
tool.
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1. DO NOT remove or connect a battery cable while the
engine is ON. Turn OFF the unit and remove the starter
insert.
2. First disconnect the negative (-) battery cable (A,
Figure 9) from the battery. Then, disconnect the positive
(+) battery cable from the battery.
3. Remove the battery hold-down strap (B) and the battery.
4. Clean the battery compartment with a solution of baking
soda and water.
5. Clean the battery terminals and cable ends with a wire
brush and battery terminal cleaner.
6. Install the battery with the battery hold-down strap.
7. First connect the positive (+) battery cable to the battery.
Then, connect the negative (-) battery cable (A, Figure 9)
to the battery.
8. Apply a layer of petroleum jelly or non-conducting grease
to the cable ends and the battery terminals.
Mower Blade Stop Time
WARNING
If the mower blade does not come to a complete stop within
5 seconds, the clutch must be adjusted. Do not operate the
machine until the correct adjustment has been performed by
a Briggs & Stratton Authorized Service Dealer.
The mower blades and mower drive belt must stop within
five seconds after the electric Power Take-Off (PTO) switch
turns OFF. If the mower drive belt does not stop within five
seconds, see a Briggs & Stratton Authorized Service Dealer
for repairs.
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