DR Power Sprint (1985 - 2000) - Manual (Page 33)

DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions 27
To Adjust the Belt Tension Using the Trimmer Control Cable
If the trimmer head stops spinning when the trimmer head control bar is engaged and the machine is
operating under a heavy load, the belt may be too loose and the trimmer control cable may need to
be adjusted to put more tension on it.
Before making any adjustments to the trimmer control cable, check that the belt is mounted on the
correct side of the idler pulley (see page 26, Figure 33), and is not frayed, worn or stretched.
WARNING: Before performing any maintenance procedures, the engine should be stopped
and the spark plug wire disconnected.
Tools Needed:
• (2) 1/2" open-end or adjustable wrenches, or pliers
To adjust the belt tension through the trimmer control cable (Figure 35), you may find it easier to set
the trimmer up on a workbench, or, after draining the gas and oil from the engine, tip the machine
back on the handlebar.
1. With wrench or pliers, loosen the nut in
front of the bracket, leaving about 1/8" of
space between nut and bracket (Figure
35).
2. Grip the metal end of the black cable with
pliers, making sure you DO NOT pinch it.
At the same time, tighten the rear nut until
it is flush and snug against the bracket.
The parts will then be in the same position
as in step 1, but 1/8" to the right (Figure
35).
If the trimmer head keeps spinning after the
trimmer head control bar is released the belt
may be too tight. Repeat the above steps,
except this time loosen the rear nut, then tighten the front nut.
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.
Figure 35