DR Power Walk-behind 13 - 17 HP (April 2005 - August 2005) - Manual (Page 41)

DR  ALL-TERRAIN  FIELD and BRUSH MOWER Safety & Operating Instructions 37
S
YMPTOM
P
OSSIBLE
C
AUSE
The engine
lacks power or
is not running
smoothly.
(Please refer to
the engine
owner’s manual
for engine-
specific
procedures.)
⇒ Check the throttle travel and adjustment.
⇒ Is the air filter clean? If it’s dirty, change it following the
procedure in the engine manufacturer’s owner’s
manual.
⇒ Is the spark plug(s) clean? If it’s fouled or cracked,
change it. If it’s oily, leave it out, hold a rag over the
plug(s) hole and pull your recoil cord several times to
blow out any oil in the cylinder, then wipe off the
plug(s) and reinsert it.
⇒ Are you using fresh, clean unleaded 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.
⇒ Check the oil level and adjust as needed.
⇒ If your engine still lacks power, call 1(800) DR-
OWNER (376-9637) for assistance.
Engine smokes. ⇒ Check the oil level and adjust as needed.
⇒ You may be operating the machine on too great an
incline.
⇒ Check the air filter and clean or replace if needed.
⇒ You may be using the wrong oil—too light for the
temperature. Refer to your Engine Manufacturer's
Owner’s Manual for detailed information.
⇒ Clean the cooling fins if they’re dirty.
⇒ If the engine still smokes, call 1(800) DR-OWNER
(376-9637) for assistance.
Machine is hard
to get into
reverse.
⇒ If you find it difficult to shift into reverse, lightly pull the
clutch lever as you pull the shift lever into reverse then
quickly release the clutch lever.
⇒ If the difficulty persists, call 1(800) DR-OWNER (376-
9637) for assistance.
The belt frays or
rolls over the
pulley.
⇒ A pulley groove may be nicked. Check the belt for
wear and hard spots. File off any nicks on the pulley.
⇒ The belt may be stretched. Replace it.