Service Bulletin

Customer Service Bulletin

Commercial Business Group

Fairway Aerator

Model/Serial Range: Model Number: Serial Numbers:

09500/09501 00000-99999

Subject: Instructions to "time" the Corer Gear Case.

Should a failure of the drive system occur, the unit will need to be re-timed to ensure

machine balance, equal loading of the tine arms, and optimum hole quality.

There are two separate procedures to properly "time" the corer gear cases. First, "time"

the upper and lower crank shafts for each individual gear case. Secondly, synchronize all

three gear cases. Attached are instructions that will allow you to properly "time" the unit

when complete disassembly of a gear case is required during repairs.

Ref: 09-01 Copyright



, 1995. The Toro Company

PAGE 1
Customer Service Bulletin Commercial Business Group Fairway Aerator Model/Serial Range: Model Number: 09500/09501 Subject: Serial Numbers: 00000-99999 Instructions to "time" the Corer Gear Case. Should a failure of the drive system occur, the unit will need to be re-timed to ensure machine balance, equal loading of the tine arms, and optimum hole quality. There are two separate procedures to properly "time" the corer gear cases.
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I. TIMING OF INDIVIDUAL CORER GEAR CASE The purpose for timing each individual Gear Case is to ensure that the tine will enter and leave the soil at the proper angle and sequence. There are three corer gear cases on the Fairway Aerator. The upper and lower crankshaft flywheels for each Tine Arm must be assembled so the Offset Shafts are located in the same "clock" position.
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While holding the upper and lower crankshafts in alignment with the timing bar, install the Drive Gear into the Gear Case (View C). NOTE: If the external teeth of the Drive Gear will not align with the Idler Gears, remove Timing Bar (82-3200) and the Drive Gear, then rotate the upper crankshaft 1/2 gear tooth toward the rear of the aerator to align the teeth. Reinstall the Drive Gear (View C). Be careful not to move the upper crankshaft position any more than 1/2 tooth to achieve proper alignment.