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34 DR
®
TRIMMER/MOWER
™
Safety & Operating Instructions
SYMPTOM POSSIBLE CAUSE
The engine lacks
power or is not
running smoothly.
(Please refer to the
engine manufacturer’s
owner’s manual for
engine-specific
procedures.)
⇒ Are you using fresh, clean gas? If it’s old, change it. Use a fuel stabilizer
if you keep gas longer than two weeks or so.
⇒ Does your engine have the right amount of clean oil? If it’s dirty, change
it following the procedure in the engine manufacturer’s owner’s manual.
⇒ Is the spark plug clean? If it’s fouled or cracked, change it. If it’s oily,
leave it out, hold a rag over the plug hole and pull your recoil cord
several times to blow out any oil in the cylinder, then wipe off the plug
and reinsert it.
⇒ Is the air filter clean? If it’s dirty, change it following the procedure in the
engine manufacturer’s owner’s manual.
⇒ Is the throttle cable attached to the engine and moving freely?
⇒ Are the blower housing, throttle linkage, and cooling fins free of debris?
Clean them following the instructions in the engine manufacturer’s
owner’s manual.
⇒ If your engine still lacks power, call 1(800)DR-OWNER (376-9637) for
assistance.
The trimmer head
won’t spin or lacks
power.
⇒ Is your v-belt properly aligned? Check it against the diagram in the Belt
section on page 18.
⇒ Is your belt worn or frayed? If so, replace it.
⇒ If the head still will not spin, follow the procedure for Adjusting the Belt
Tension through the Trimmer Control Cable on page 30.
⇒ If none of the above helps, call 1(800)DR-OWNER (376-9637) for
assistance.
The trimmer head
keeps spinning or
spins when you
release the bail bar.
⇒ Is your v-belt properly aligned? Check it against the figures in the section
called Removing and Replacing the Belt on page 29.
⇒ If the head keeps spinning when you release the bail bar, see Adjusting
the Belt Tension through the Trimmer Control Cable on page 30.
⇒ If none of the above works, call 1(800)DR-OWNER (376-9637) for
assistance.
The cutting cords are
breaking.
⇒ Are your cords too dry? Store cords in a plastic bag with a damp sponge
or cloth to make them less prone to breaking or soak them in a bucket of
water for a few days.
⇒ Try a lighter cord.
⇒ Are you trying to do too much too fast? Ease into the material to be cut;
let the cord tips do the work. Take small bites of tall or tough vegetation.
Cut half a swath at a time, keeping the cut area to the discharge or right
side of the trimmer. Go over tall material twice, the first time with the
head tilted up and back; the second time with the Mow-Ball
Support
on the ground.
⇒ Are you hitting your cords against a stone or a chain-link fence? The
cords won’t last as long against obstacles as in the open. Work on
controlling the cutting pattern. With practice, you’ll learn to cut closer to
obstacles without hitting them.
⇒ If none of the above works, call 1(800)DR-OWNER (376-9637) for
assistance.