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5

OPERATING INSTRUCTIONS

Inspect aerator before each use

Do not use aerator if any parts are not maintained in good
operating condition. Examine the moving parts prior each use.
Look for excessive wear, bald drive tires or worn out front
tires, cracks in parts, loose or missing bolts, cotter, lynch, or
hair pins and replace before operating the aerator. 

How to Start the Aerator

Turn the ignition switch to the “On” position.

Turn the choke on (if engine is cold).

Pull engine rope until it starts.

Turn the choke off once it’s running smoothly.

Immediately step onto the foot platform after the engine 
is running.

Unusual Noises or Irregular Operation

As you drive the aerator listen for any unusual noises and test
for irregular operation and adjust or service as necessary.

How to Drive the Aerator

You must stand on the aerator foot platform for the aerator to
move. Move the throttle speed to the desired speed. Once you
are standing on the foot platform, and the engine is set at the
desired speed, push both control handles away from you to go
forward, and pull them both towards you to go backwards. To
turn right pull the right control handle. To turn left pull the left
control handle. Let go of both the control handles to bring the
machine to idle position.

SERVICE AND

ADJUSTMENT

Tire Maintenance and Pressure

Excessively worn tire tread is dangerous on all hills. Replace
drive tires with less than 3/32” of any tread groove left. Use
only tires supplied by Classen. All six tires are foam filled and
do not hold air. You will not need to check air pressure.

How to Bleed Air from the Hydraulic System

When any of the hydraulic parts are disconnected or removed
or when the oil is changed, air must be bled from the system.
With the bypass valve (brass nut on each of the hydraulic
pumps with a hole in the middle) closed, slowly move the
control handles in both the forward and reverse directions. As
air is purged from the unit, the oil level in the reservoir will
drop and bubbles may appear in the fluid. Refill the reservoir
as necessary. 

Place the control handles in the neutral position and open the
bypass valve using a 5/8” wrench. Slowly move the control
handles in both the forward and reverse directions to purge the
air from the closed circuit. 

Close the bypass valve and run the unit in both directions for
several minutes, until any remaining air is purged from the

unit. Refill the reservoir as necessary. Check for any fluid
leaks, and check the reservoir level. Add fluid if necessary. 
The transmission is now ready for operation. Check the
reservoir daily for proper fluid level. It should be filled to the
top, or about 4 quarts.

Decals

(3) CLASSEN

®

decals located on front bumper and on

both sides of frame.

(2) STAND-AER™ decals located on both sides of frame,
under CLASSEN

®

decal.

(1) DANGER decal located on left side pulley guard.

(1) ALL GUARDS decal located on right side 
pulley guard.

(2) SA-25 decals located on both sides of handle.

(1) TINE DEPTH decal located on front left of machine.

(1) R.H. FORWARD/REVERSE decal located on right
upper side of handle.

(1) L.H. FORWARD/REVERSE decal located on left
upper side of handle.

(1) THROTTLE FAST/SLOW decal located on lower 
right side of handle.

(1) SERIAL TAG located on lower left inside of handle.

(1) LUBRICATION TAG twist tied to engine.

(1) TINES decal located on upper left side of handle.

P/N 100074

P/N 100380

P/N 100096

P/N 100069

P/N 100424

P/N 100422

P/N 100421

P/N 100423

P/N 100350

P/N 100425

P/N 100073

P/N 100055

Summary of Contents for STAND-AER SA-25

Page 1: ...ND AER STAND ON AERATOR S N 173 and Up A Division of Schiller Pfeiffer Inc www classen mfg com 1028 Street Road Southampton PA 18966 Toll Free 1 877 596 6337 Fax 1 215 357 8045 Operator s Manual and P...

Page 2: ...l before operating the equipment General Safety Instructions The Classen STAND AER is designed with your safety in mind It has the following safety systems that you should be familiar with The warning...

Page 3: ...aired When changing tines pull out and remove the 3 8 snap lock pin located in the upper center of the foot platform mount and raise platform Once platform is raised and secured in the up position you...

Page 4: ...perate the aerator at the highest speed unless you are on a level wide open area of clearly visible ground or transporting on paved areas Speeding with the aerator is dangerous and so is traveling fas...

Page 5: ...ts are disconnected or removed or when the oil is changed air must be bled from the system With the bypass valve brass nut on each of the hydraulic pumps with a hole in the middle closed slowly move t...

Page 6: ...6 Main Frame Assembly SA 25 STAND ON AERATOR...

Page 7: ...500135 4 1 2 x 2 1 2 BOLT 3 300121 1 WEIGHT BAR 4 500006 7 1 2 LOCK WASHER 5 500106 5 1 2 NUT 6 400208 1 SA 25 MAIN FRAME 7 500129 22 3 8 NUT 8 500130 22 3 8 LOCK WASHER 9 500042 10 3 8 FLAT WASHER 10...

Page 8: ...8 Power Train Assembly SA 25 STAND ON AERATOR...

Page 9: ...YDRAULIC PUMP 9 500079 8 3 8 x 1 3 4 BOLT 10 100382 1 CLUTCH 11 500181 1 1 4 x 1 1 2 KEY 12 100378 2 PUMP MOUNT 13 300118 4 PUMP BRACKET SPACER 14 100315 2 1B 34 PULLEY 15 100371 2 6941 V BELT 16 1001...

Page 10: ...10 Handle and Control Assembly SA 25 STAND ON AERATOR...

Page 11: ...NUT 23 500025 2 3 8 FINE THREAD NUT 24 400198 1 RIGHT SIDE HANDLE 25 100012 1 SPRING 26 100350 2 SA 25 DECAL 27 400197 1 LEFT SIDE HANDLE 28 100351 1 STOMACH GUARD PAD 29 300114 1 STOMACH GUARD PLATE...

Page 12: ...TINE SPACER 6 200009 2 SPROCKET w 1 HUB 40 x 30 7 700031 2 TINE DISC SHAFT ASSEMBLY 8 500003 2 1 4 HALF MOON KEY 9 100032 36 TINE 10 500146 6 3 8 x 1 1 2 BOLT 11 100383 2 BEARING w SET SCREWS 1 3 BOL...

Page 13: ...7 8C2AT x 12 w 1 8MB 8MJ 2 8G 8FJX45 1 10MB 8MJ 6 600052 1 HOSE 8 8C2AT x 11 1 4 w 1 8MB 8MJ 1 8G 8FJX 1 10MB 8MJ 1 8G 8FJX45 7 600053 1 HOSE 9 6C2AT x 4 1 4 w 1 6MB 6MJ90 2 6G 6FJX 8 600059 1 HOSE 10...

Page 14: ...14 Hydraulic Hoses Description SA 25 STAND ON AERATOR...

Page 15: ...ility for variations which may be evident in the actual specifications of its products and the statements and descriptions contained in this publication COMPACT AERATORS CA 18H CA 18B SPLIT DRIVE AERA...

Page 16: ...ed to two years from the date of purchase and to the extent permitted by law any and all implied warranties are excluded The above remedy of repair and replacement of defective parts is the purchaser...

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