Service Bulletin

Customer Service Bulletin

Commercial Business Group

ProCore

440, 660 and 880 Aerators

Date: May 12, 2003

Model/Serial Range: Model Numbers:

Serial Numbers:

09700 & 09700TE 200000000-230009999

09701 & 09701TE 200000000-230009999

09702 & 09702TE 200000000-230009999

Subject: Rotalink Arm damage and loose Rotalink Element.

The Rotalink Arm may become damaged or distorted due to improper operating

techniques resulting in a loose Rotalink Element. Damaged Rotalink Arms and loose

Rotalink Elements may result in poor hole-quality. The key factors below are covered in

the Operator’s Manual and Operator’s Video (Tape 01087SV or CD 02096SD).

1. Always disengage the PTO or lower the engine speed to idle before raising the

aerator. Never operate the coring head in the air at full speed. The uncontrolled

Tine Arm mass will cause the Rotalink Arms to make heavy contact with the frame

opening and mounting bracket. The Rotalink Arms will only withstand a limited

amount of this abuse before damage occurs.

2. Select the proper tractor gear and control downhill tractor speed to prevent

exceeding the maximum 2.5 mph (4 km/hr) coring speed. Exceeding the maximum

recommended speed while coring will over-run the coring operation. Doing so can

result in the Rotalink Arm making heavy contact with the framework as the tines fail

to clear the turf soon enough.

Typical signs of damage due to improper operation are highlighted below.

Contact at rear

Mounting

Bracket

Weld affected

Contact at

frame opening

Bolt hole enlarged