Maintenance
11
All the components used to build this engine must
remain in place for proper operation.
CAUTION
Emissions Control
Maintenance, replacement, or repair of the emissions
control devices and systems may be performed by
any non-road engine repair establishment or
individual. However, to obtain no charge repairs under
the terms and provisions of the Briggs & Stratton
warranty statement, any service or emissions control
part repair or replacement must be performed by a
factory authorized dealer. See the Emissions
Warranty.
Inspect Muffler And Spark Arrester
Inspect the muffler and the spark arrester (if
equipped) every 50 hours. If muffler is equipped with
a spark arrester screen, remove the screen for
inspection. Replace the screen if damaged or
plugged. If inspection determines that replacement
parts are required, make sure to use only original
equipment replacement parts.
Carburetor Adjustment
Never make adjustments to the carburetor. The
carburetor was set at the factory to operate efficiently
under most conditions. However, if adjustments are
required, see any Authorized Briggs & Stratton
service dealer for service.
The manufacturer of the equipment on which this
engine is installed specifies top speed at which the
engine will be operated. DO NOT EXCEED this
speed.
CAUTION
Valve Clearance
Check valve clearance every 250 hours. See
“Tune-up Specifications” chart.
Spark Plug (Figure 15)
Check the spark plug every 100 hours. Replace the
spark plug if, upon inspection, the electrode (A) is
burned or worn. Make sure that the spark plug is
clean. Check the gap with a wire gauge (B). If
necessary, reset to .030 in (0.76 mm).
NOTE: In some areas, local law requires using a
resistor spark plug to suppress ignition signals. If this
engine was originally equipped with a resistor spark
plug, use same type for replacement.
.030 in
(.76 mm)
Figure 15: Check Spark Plug
A
B
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