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VERTI-CUTTING OPERATION
MOW: Mow the lawn to shorter than the normal cut height (approximately 2" tall)
DRY: Be sure grass is dry. Wet conditions can cause increased damage to healthy grass.
SET DEPTH: With engine off, set the raking depth so that the blades just touch on a flat surface
(i.e. driveway, or sidewalk).
START ENGINE: See Page 9.
ENGAGE BLADES: Push the Reel Lever down on the operators handle (upper left side).
NOTE: When engaging the blades in heavy load conditions (i.e. heavy thatch, or very uneven
turf), push down on the operators handle lifting the front wheels slightly. Engage the blades.
Slowly lower the unit into the turf.
SLICE: Verti-cut a small test area and examine the results. Some thatch and cut stems should
be removed and deposited on top of the healthy grass. Grass runners should be cut and ready
for removal. If excessive damage occurs to healthy grass, adjust the blade depth to decrease
damage. Continue raking the yard, working in one direction (i.e. north-south, or east-west).
NOTE: If a large drop in engine RPM occurs, or bounces during operation the blade depth is set
too low.
REMOVE THATCH/STEMS: After verti-cutting, a layer of thatch and cut stems will be deposited
over the top of the lawn. We suggest the use of a lawn vacuum or wheeled blower for collection
and removal of the thatch/stems.
OVERSEEDING OPERATION
MOW: Mow the lawn to shorter than the normal cut height (approximately 2" tall)
DRY: Be sure grass is dry. Wet conditions can cause increased damage to healthy grass.
SEED: Spread grass seed according to the seed suppliers directions (e.g. 10 lbs. per 1000 ft 2 [4.5
kg. per 93 m 2 ]) Adjustments to the seed drop is located on the front of the unit on the seed dial and
should be used in conjunction with the seed chart on the console.
SET DEPTH: With engine off, set the raking depth so that the blades reach 1/4"-1/2"(6-12 mm)
below a flat surface (i.e. driveway, or sidewalk).
START ENGINE: See Page 9.
ENGAGE REEL AND SEED DROP: Push down on the Reel lever on the operators handle. NOTE:
When engaging the reel in heavy load conditions (i.e. heavy thatch, or very uneven turf), push down
on the operators handle lifting the front wheels slightly. Engage the reel. Slowly lower the unit into
the turf.
SLICE: Run machine over the area that has been seeded to incorporate the seed into the soil. If
excessive damage occurs to healthy grass, adjust the blade depth to decrease damage. Continue
raking the yard, working in one direction (i.e. north-south, or east-west). NOTE: If a large drop in
engine RPM occurs, or bounces during operation the blade depth is set too low.
WATER/FERTILIZE: After the seed has been worked into the soil, water and fertilize according to
the seed suppliers directions.
ADJUSTING SEED RATE
INSTRUCTION LABEL P/N 351501
Part No 351513
OS900SP Owner's Manual
To set the seed flow rate, loosen the knob on
the indicator dial and set it to the
corresponding stop setting on the seed
application chart (below or on the console) for
the type and amount of seed being used.
7
Form No F061311B
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