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User Clothing
DO NOT operate the aerator while wearing sandals, tennis
shoes, or shorts. Always wear long non-baggy pants. Wear
high-top leather work boots with thick, textured tread at all
times. Hard or smooth soled shoes are too slippery for a good
footing on aerator platform. NEVER wear loose fitting
clothing which could get caught in the moving parts. Wearing
safety glasses, ear protection and safety shoes is advisable.
Inspect Aerator Before Each Use
DO NOT use the aerator if any parts are not maintained in
good operating condition. Examine the moving parts prior to
each use. Look for excessive wear, bald or worn tires, cracks in
parts, loose or missing bolts, cotter, lynch, or hair pins and
replace before operating the aerator. Make sure all safety
equipment provided with the aerator is in good operating order,
including all the warning decals. Inspect the rear wheels and
their respective bolts for tightness and proper operation. Ensure
that all parts of the hand-operated transmission control system
are tight and secure. This is to reduce the possibility that the
aerator could have a loss of control or safety.
Scheduled Aerator Maintenance
Replace worn rear drive tires with less than 3/32” of any tread
groove left. Grease all fittings (12 total) daily. Each grease
fitting should be filled until full.
• 4 fitting on the swing arm.
• 1 fitting on each of the front wheels.
• 1 fitting on the left and right control handles.
• 1 fitting on each tine disc hub.
• 1 fitting on each female rod end.
Check roller chains for wear. Apply a light coat of No. 30 oil
or penetrating chain lubricant to keep the chains in proper
running order.
Check roller chain(s) for tightness. Follow these steps:
Model SA-25
1. Disconnect spark plug.
2. Take off pulley guard(s).
3. Loosen nuts by turning counter clockwise
4. Retighten nut by turning clockwise against lock washer.
5. Replace pulley guard, nuts and lock washers and
retighten nuts.
DO NOT change the engine governor settings or over-rev the
engine contrary to engine manufacturer specifications. Keep
the Classen aerator in good operating condition, and keep
safety devices and shields in place and in working condition.
Keep all nuts and bolts tight to be sure the equipment is in safe
working condition. Replace worn tines. Make sure the engine
is turned off when doing ANY maintenance on unit. The
aerator should not be used after the tine strikes a foreign
object, until conducting a thorough inspection and any damage
is repaired. 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 have access to the tines.
When you are done maintaining the tines, lower the platform,
and re-secure the 3/8” snap lock pin.
Work Area Conditions and Inspection
Prior to operating the unit carefully inspect all lawn/ground
areas where you plan to use the aerator for hidden, hard-to-see
objects or uneven ground that may be hidden in the grass.
Clear the work area of moveable objects such as wire, rocks,
sprinkler heads, glass, etc. that might damage the aerator or be
thrown. Remove, if possible, or mark the location of all
immovable objects or irregular areas and be sure not to hit
them with any part of the aerator. Obstacles such as holes,
abrupt changes in the ground contour, tree trunks, stumps or
roots, stub pipes protruding from the ground, paving edges,
etc. in the path of operation can abruptly turn or stop the
aerator. This could throw you off the aerator or into and
possibly over the control handle causing serious injury or
death. The faster you are moving the more potential there is
for injury. Aerate only in daylight or in good artificial light.
Keep away from drop-offs, the edges of ponds, streams, pools,
etc. especially at the bottom of slopes. Do not aerate when
children or others are around. Never operate the aerator in an
enclosed area without good, approved ventilation. Exhaust
fumes are dangerous.
Initial Operating Safety Guidelines
• Read and understand the warning decals on the unit.
• Keep a firm hold on the stationary handle at all times.
• Keep both feet on foot platform at all times.
• Know the controls and how to stop quickly.
• Before attempting to start engine, follow all
starting instructions.
• Look behind before backing up.
• Before leaving the operator’s position for any momentary
reasons, make sure the tines are up. Keep others from
coming near the aerator. Get back on the aerator as soon
as possible.
• When transporting, driving onto transport vehicles, into
buildings, across parking lots or otherwise not aerating, lift
tines up.
• When driving the machine onto a trailer, or transport
vehicle, always back the machine onto the unit, for fear of
tipping backwards.
• Before performing any maintenance, or repair service
always turn engine off.
• DO NOT allow inexperienced people to operate the
aerator until they have read and understood these safety
instructions. Operate the aerator at slower speeds while
becoming familiar with it.
• Speeding is dangerous for even an experienced operator.
Sudden stops from excessive speed may cause serious
injury.