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Service Engine - 14
SERVICE ENGINE
Check and clean air filter elements at the intervals
recommended in the Service Intervals section. See the
engine manufacturer’s owner’s manual provided with your
machine for the complete procedure.
Checking Spark Plug
Check spark plugs at the intervals recommended in the
Service Intervals section. See the engine manufacturer’s
owner’s manual provided with your machine for the
complete procedure.
Adjusting Carburetor
NOTE: Carburetor is calibrated by the engine
manufacturer and is not adjustable.
If engine is operated at altitudes above 1829 m (6,000
ft), some carburetors may require a special high
altitude main jet.
If engine is hard to start or runs rough, see the
troubleshooting section of the engine manufacturer’s
owner’s manual provided with your machine.
Possible engine surging will occur at high throttle with
transmission in “N” neutral and mower disengaged. This is
a normal condition due to the emission control system.
After performing the checks in the troubleshooting section
and your engine is still not performing correctly, contact the
local engine manufacturer’s authorized servicing dealer.
Replacing Fuel Filter
1. Park machine safely. (See Parking Safely in the Safety
section.)
2. Turn fuel shutoff valve to off position.
3. Disconnect the fuel hose from the outlet side of the fuel
filter, and drain gasoline into a properly marked container.
4. Remove the fuel filter from the inlet fuel hose. Discard
filter.
5. Connect a new fuel filter to hoses.
6. Turn fuel shutoff valve to ON position.
IMPORTANT: Avoid damage! Dirt and debris can
enter the engine through a damaged filter element:
• Do not wash paper element.
• Do not attempt to clean paper element by tapping
against another object.
• Do not use pressurized air to clean element.
• Replace element only if it is very dirty, damaged
or the seal is cracked.
c CAUTION: Avoid injury! Touching hot surfaces
can burn skin. The engine and components will
be hot if the engine has been running. Allow
the engine to cool before servicing.
c CAUTION: Avoid injury! Fuel vapors are
explosive and flammable:
• Do not smoke while handling fuel.
• Keep fuel away from flames or sparks.
• Shut off engine before servicing.
• Cool engine before servicing.
• Work in a well-ventilated area.
• Clean up spilled fuel immediately.
IMPORTANT: Avoid damage! When installing a new
fuel filter, the filter arrow must be pointing in the
direction of fuel flow.