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 non- road 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.
Avoid Fumes
Engine Oil
CAUTION: Avoid injury! To prevent injury from accidental starting, always remove wire from spark plugs and disconnect battery at negative terminal before servicing engine.
NOTE: Air cooled engines run hotter than automobile engines. The use of
30)in ambient temperatures above 4° C (40° F) will result in higher than normal oil consumption. If multi- viscosity oil used, check oil level more frequently to prevent any possible damage due to lack of lubrication.
Use oil viscosity based on the expected air temperature range during the period between oil changes.
Use a high quality detergent oil classified as:
•API Service Classification SG
•API Service Classification SF
CAUTION: Avoid injury! Engine exhaust fumes can cause sickness or death:
-If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove the fumes.
-Always try to work in a well ventilated area.
Checking Engine Oil
IMPORTANT: Avoid damage! To avoid engine damage, DO NOT run engine if oil level is below ADD mark.
NOTE: Engine must not be running.
Make sure engine is COLD when checking engine oil level.
Service Engine - 27
