MTD 500 Thru 509 Lawn Mower User Manual


 
12
Maintenance
NOTE: When tipping the unit or emptying the fuel tank
keep the air cleaner side of engine up. Never tip the
mower more than 90 degrees and do not leave the
mower tipped for any length of time. Oil can drain into
the upper part of the engine causing a starting problem.
Engine Care
A list of key maintenance jobs, required for good
performance by the mower, is given below. Follow the
accompanying engine manual for details.
Change the engine oil regularly, as instructed in the
engine manual. Check oil level before starting
engine every time.
Service air cleaner every 25 hours under normal
conditions. Poor engine performance and flooding
usually indicate that the air cleaner should be
serviced. To service the air cleaner, refer to the
separate engine manual packed with your unit.
Clean the engine periodically. Remove dirt and
debris with a cloth or brush.
Keep the cooling system (blower housing area)
clean to permit proper air circulation which is
essential to engine performance and life. Be certain
to remove all grass, dirt, and combustible debris
from muffler area.
Clean the spark plug and reset the gap to.030” at
least once a season. Refer to the engine manual for
correct spark plug type.
Inspect muffler periodically and replace if
esaaym.