Power smart DB2321CR, Instruction Manual, Page: 21 / 80

21
6.
Screw the spark plug back into the spark plug hole using the spark plug wrench. Do not
over-tighten spark plug. Recommended tightening of spark plug is ½ to ¾ of a turn after spark
plug gasket contacts spark plug hole. Reinstall the spark plug boot.
Maintenance Schedule
Item Action Before
each
use 5 Hours of
use or first
month First 25
hours
of use 50 hours of use
or every 6
months 100 hours of
use or every
year 150 hours of
use or every
two years
Blade Inspect x
Blade
mounting
bolt
Inspect x
Engine oil
Check x
Change x x
2
x x
Air filter
Check x
Clean x
1
x
1
x
1
Replace x
Blade
control
operation
Check x x
Spark plug
Check x
Replace x
Fuel tank Clean x
Flywheel
brake pad
Check x
Valve
clearance Check-
adjust
x
Fuel line Check Check every 2 years and replace if necessary
1. Service more frequently when used in dusty areas.
2. Change engine oil every 25 hours when used under heavy load or in high outside air temperatures.