Service Engine - Page 43
SERVICE ENGINE
Engine Warranty Maintenance Statement
Maintenance, repair, or replacement of the emission
control devices and systems on this engine, which are
being done at the customers expense, may be
performed by any nonroad engine repair establishment
or individual. Warranty repairs must be performed by an
authorized John Deere dealer.
Adjusting Carburetor
NOTE: Carburetor is calibrated by the engine
manufacturer and should not require any
adjustments.
If engine is operated at altitudes above 1829 m
(6,000 ft), some carburetors may require a special
high altitude main jet. See your John Deere dealer.
Possible engine surging will occur at high rpm with
no load (with transmission in “N” neutral and
mower blade engagement lever disengaged). This is
a normal condition due to the emission control
system.
If engine is hard to start or runs rough, check the
Troubleshooting section of this manual.
After performing the checks in the troubleshooting
section and your engine is still not performing correctly,
contact your John Deere dealer.
