John Deere GM1190R Lawn Mower User Manual


 
12 Operation
WPMAN0142 (Rev. 9/1/2004)
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
OPERATING TECHNIQUE
Proper ground speed will depend upon the terrain and
the height, type and density of material to be cut. Nor-
mally, ground speed will range from two to five mph.
Tall dense material should be cut at a low speed, while
thin medium-height material can be cut at a higher
ground speed.
Always operate tractor PTO at 540 rpm; this is neces-
sary to maintain proper blade speed and produce a
clean cut.
Under certain conditions, tractor tires may roll some
grass down and prevent it from being cut at the same
height as the surrounding area. When this occurs,
reduce tractor ground speed but maintain 540 rpm PTO
speed. The lower ground speed will permit grass to at
least partially rebound.
Under some conditions, grass will not rebound enough
to be cut evenly. In general, lower cutting heights give a
more even cut with less tendency to leave tire tracks.
However, it is better to cut grass frequently rather than
too short. Short grass deteriorates rapidly in hot
weather and invites weed growth during growing sea-
sons. Follow local recommendations for the suitable
cutting height in your area.
Tips
Inspect and clear area of stones, branches, or
other hard objects that might be thrown, causing
injury or damage.
Extremely tall material should be cut twice. Cut mate-
rial higher the first pass. Then cut at desired height, at
90° to first pass.
Remember, sharp blades produce cleaner cuts and
require less power.
Analyze area to be cut to determine best procedure.
Consider height and type of material and terrain type:
hilly, level or rough.
Plan your mowing pattern to travel straight forward
whenever possible.
Optional Blades
The mower is equipped with free-swinging suction type
blades as standard equipment when shipped from the
factory. If you are operating in a sandy area or where
high abrasive wear occurs and causes damage to the
fin of the standard suction type blade, an optional low
suction type blade is available.
Optional Front Roller
The tailwheels and side skids effectively reduce scalp-
ing in most cases. However, you may encounter areas
where the tailwheels and/or side skids drop into
depressions and allow center of mower to contact
ground and scalp. An optional front roller may be
installed to minimize scalping.
Uneven Terrain
Do not operate or transport on steep slopes.
Do not stop, start, or change directions sud-
denly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
REMOVING MOWER FROM TRACTOR
Place tractor and mower on a solid level surface. Raise
mower and block securely.
Disengage PTO, set parking brake, stop engine and
remove key.
STORAGE
Clean equipment before storage. See instructions on
page 16.
Block equipment securely for storage.
Keep children and bystanders away from stor-
age area.
WARNING
WARNING
WARNING