Orbit-Air 8325-01 Installation guide

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Owner Operation and
Maintenance Manual
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ROTARY MOWER
MODELS 8325-01
& 8335-01
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TO THE OWNER
This is an operation manual only and does not cover
repair. All repair work must be performed by an
authorized Bolens dealer or the warranty is void.
Bolens equipment is carefully engineered to give
efficient, trouble free performance if properly oper-
ated and maintained. Keep your unit clean and lu-
bricate regularly. Periodically inspect the unit and
perform any upkeep maintenance necessary.
The dealer is obligated by the factory to completely
assemble and service new equipment before delivery
and thoroughly explain its operation. He will repair
or replace any parts which fail due to defective ma-
terial or workmanship during the warranty period
and also provide future repair service and parts.
To insure continued satisfactory operation, insist
that your new equipment is completely serviced and
its operation explained by your dealer.
ASSEMBLY
The mower is shipped completely assembled except
for the handle, throttle control, and clutch lever. In-
sert ends of lower handles (straight sides of bottom
ends outward) into upper handle, align holes and se-
cure with special oval head screws. The heads of
the screws should be to the outside. Position holes
in lower handle, over mounting studs of mower base,
add 3/8" flat washers and secure with 3/8-16 lock
nuts. Mount the handle struts from the lower han-
dles to the brackets on mower base using 5/16-24
x 1-1/4 capscrews and lock nuts on top and 5/16-24
x 5/8 capscrews and lock nuts on the bottom. The
end of strut with two holes must be attached to the
lower handle and the hole utilized will determine the
handle height. The mounting brackets on the mower
base have slotted holes to allow for movement of the
handle assembly, therefore, do not tighten capscrews
to the extent that the strut binds on thelbracket.
Mount the throttle control to the outside of left handle
and clutch control to outside of right handle With
1/4-20 x 1-1/4 capscrews and lock nuts. Secure
wire housings to handles with clips provided.
ENGINE
IMPORTANT: THE ENGINE IS SHIPPED WITHOUT
OIL IN THE CRANKCASE. Before using the unit,
check to be certain the crankcase is filled to indi-
cated level with lubricant specified in engine manual.
Check oil level and change oil in accordance with
engine manufacturer's instructions. (The drain plug
is located underneath the mower base.) Other im-
portant information is contained in the engine man-
ual; follow all instructions carefully.
To start the engine, move throttle lever to "choke"
position and BE SURE CLUTCH LEVER IS IN DIS-
ENGAGED POSITION. Push lever on side of impulse
starter all the way in. Extend impulse starter han-
dle and turn clockwise four turns. Retract starter
handle, stand free of mower and pull lever outward.
When engine starts, gradually move throttle control
to "fast" position. To stop engine, move throttle
control to "stop" position. CAUTION: NEVER WIND
IMPULSE STARTER AND LEAVE ENERGIZED.
NOTE: BOLENS DIVISION DOES NOT WARRANT
THE ENGINE ON THIS UNIT. IT IS WARRANTED
SEPARATELY BY THE MANUFACTURER THROUGH
HIS OWN LOCAL SERVICE STATIONS.
CONTROLS
The throttle lever on the left handle controls choking,
engine speed, and stopping the engine. The clutch
control on the right handle engages and disengages
the forward motion of the mower. The lever on the
rear of the mower base opens and closes the dis-
charge cover. A latch prevents the discharge cover
from opening all the way as the cover must act as a
deflector for safe operation. If a bag and chute at-
tachment is used, it will be necessary to open the
discharge cover all the way. This can be done by
raising the latch with the finger which will release
the "stopper action" on the cover. IMPORTANT:
RELEASE THE LATCH ONLY WHEN BAG AND
CHUTE IS USED.
OPERATION
The larger chamber of the base has the capacity to
handle an enormous quantity of clippings without
plugging or WindrOWing. The clippings are held in
suspension within the base by the air flow created
by the blade and cut until fully pulverized. This fine
mulch is then forced downward over the mowed por-
tion of the lawn where it disappears among the grass
roots and provides health restoring mulch to assist
in maintaining ahealthy attractive lawn.
When cutting tall weeds or grass, open the discharge
cover to permit immediate discharge of excessive
clippings from the base. When operating the mower
with the discharge cover open, best results will be
obtained by mowing in aclockwise direction around
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PRINTED IN U,S.A.
FORM NO. 551487 ~~
BrentChalmers.com

the plot, keeping the uncut grass on the operator's
right. In this way the discharged clippings will fall
in the path of the next swath to be again picked up
and cut into afine mulch.
In the fall of the year the Orbit-Air Mower is a per-
fect unit for leaf mulching. For best results the
wheels should be set so the mower base is in the
lowest position and the mower run over the leaves
with the discharge cover closed. The leaves will be
cut and recut in the base in the same manner as
grass clippings in lawn mowing and after being pul-
verized will be forced downward between the grass
blades.
If you prefer to remove the mulch entirely, a dis-
charge chute and bag is available from your dealer.
With the chute and bag installed, cutting and bagging
of the mulch is completed in one operation; no un-
necessary work such as raking or lawn sweeping is
involved. When the bag is full, remove it from the
mower and transport the mulch in the bag to the
compost pile.
CUTTING HEIGHT
normal stretch and wear of the belt. If the drive
belt must be replaced, remove the gear case cover
and the belt cover. The belt can now be removed
easily and anew belt installed.
Replace the belt cover but before replacing the gear
case cover, check the clutch lever for proper idle
setting. With the front mower wheels in the highest
cut setting and the clutch lever all the way back,
there should be a maximum clearance of 1/8 inch
between the idler pulley and the baffle under mower
base.
If adjustment is necessary, it can be made by chang-
ing the position of control wire in the clutch lever or
by changing the position of wire housing in the clamp
on mower base. The setting should be changed with
the clutch lever forward to remove tension of clutch
wire. After setting is changed, move clutch lever
to disengaged position and check idler pulley for
proper clearance. The position of the belt guide on
engine
drive pulley is also very important for smooth
idling. The belt guide should be in line with the front
edge of the drive pulley at all times.
CHUTE AND BAG ATTACHMENT
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SAFETY SUGGESTIONS
Mount
the two brackets to the inside of mower handle
using the bolts joining the upper and lower handle.
Both brackets must have the large hole to the front.
The left bracket is mounted with the large hole below
the handle and the right bracket with large hole
above the handle. Mount rod with curved end first.
Insert straight- end of rod through hole in right
bracket and with rod passing over left handle, insert
curved end in hole of left bracket. Secure rod with
cotter pin. Couple the rod with hooked end to rod
already installed. Release latch and open discharge
cover completely. Position chute over discharge hole
with
the lip on rear of chute behind the wall of mower
base. Insert lock pin on front of chute into hole in
mower base and turn 90 degrees. Install bag from
chute to support rod.
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The cutting height is regulated by individual adjust-
ment of each wheel. Seven cutting heights are avail-
able ranging from ahigh of 3 inches to alow of 1
inch. The highest cut setting is with the adjusting
levers toward the front and the lowest setting with
the levers toward the rear. To change the height of
cut, hold wheel firmly, pull lever toward wheel until
it is free and move to desired setting. Release the
lever and be sure it seats in the hole selected. All
four levers must be in the same height setting.
CAUTION: NEVER CHANGE CUTTING HEIGHT
WITH THE ENGINE RUNNING.
CUTTING BLADE
Always
keep the blade sharp for best cutting results.
When sharpening the blade, file or grind equal por-
tions off both ends to maintain a balanced blade. If
the blade is not properly balanced, vibration will
result which could cause serious damage to the en-
gine. A loose blade or blade coupling will also cause
vibration, therefore be sure the blade is mounted
securely at all times.
MAINTENANCE
Check the complete unit regularly for loose screws
and nuts, especially the cutting blade and blade cou-
pling mounting screws. Periodically place afew
drops of light oil on the rear wheel bolts and height
adjusting linkage. In case the gear case is repaired,
pack gears and bearings with regular gun grease be-
fore assembling.
BELT REPLACEMENT AND ADJUSTMENT
The drive belt is properly adjusted at the factory and
the spring loaded idler pulley will compensate for
(1)
(2)
(3)
(4)
(5)
(6)
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Be sure the clutch lever is disengaged before
starting the engine.
Never stand in front of mower when starting
engine.
Remove stones, wire, etc. from area to be
mowed. Avoid striking protruding objects such
as pipes and stones with cutting blade.
Always keep hands and feet free from edge of
mower base when engine is running.
Always remove spark plug wire when working
on
the mower.
Never allow children in area being mowed.
Never leave mower unattended while engine is
running.
Never add gasoline while engine is running.
Never operate mower with discharge cover en-
tirely open unless using a bag and chute attach-
ment.
Always keep unit clean and in good repair.
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