DR Power Sprint (1985 - 2000) - Manual (Page 26)

20 DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions
Maintenance
For Engine Maintenance, Please Refer to the Engine
Manufacturer's Owner's Manual.
IMPORTANT: Because of the extreme conditions the DR
®
TRIMMER/MOWER
™
is
often used in, air filters and oil should be changed more frequently than is recommended
in your Engine Manufacturer's Owner's Manual. Please follow these recommendations:
Paper Air Cartridge: Should be replaced every 25 hours of operation.
Oil: Should be drained and replaced every 25 hours of operation.
Regular Maintenance
Regular maintenance will ensure the best performance and long life of your machine. Below is a list
of recommended maintenance procedures.
WARNING: Always allow the engine to cool completely and remove the spark plug wire before
performing any maintenance procedures.
Caution: Do not tip the trimmer back on its handlebar to access the underside unless you first
drain the gas and oil.
·
Clean any debris from the top and bottom of the machine, cylinder head fins, blower housing,
finger guard, and muffler areas with a brush or rag.
·
Replace the air filter(s).
·
Replace the spark plug.
·
Check the Mow-Ball
™
Support assembly and clean out any debris wrapped around the shaft.
·
Drop the bearing housing and clean out any debris. Check for burrs on the pulley.
·
Lubricate the engine throttle cable, trimmer control cable, and idler pulley with FLUID FILM
®
or a similar lubricant.
·
Check the Mow-Ball
™
Support and cutting height adjustment disks for wear, and replace them if
necessary.
·
Replace broken or frayed cutting cords.
·
Check the belt for fraying or stretching. Replace it if necessary.
·
Check the bolts and nuts on the bearing housing assembly. If they are loose, tighten them with a
1/2" wrench or socket. Check occasionally throughout the season to be sure they're secure.