Operator's Manual

Important: Driver and driven gears selected must combine
to add up to 70.
Gear Installation:
1. Remove the pick-off gear case cover (Fig. 4).
2. Remove the lynch pins securing the driver and driven gears
and slide the gears off the shafts (Fig. 5).
3. Install the driver and driven gears matching the chart time
and secure with lynch pins (Fig. 5).
Note: The number of gear teeth is stamped on each gear.
4. Install the gear case cover. Make sure the machine covers
are in place and verify the aerator/tractor timing.
Verifying Timing:
1. Raise the coring head, set the parking brake, stop engine
and lower the coring head supports (Fig. 7).
2. With the tractor at proper settings, operate the aerator a
short distance, then raise the coring head, disengage the
PTO and stop the tractor. Set the parking brake, lower the
coring head onto supports (Fig. 7) and stop the engine.
11
GEARS
Sec./30.5 m Driver Driven
INCREASING HOLE
SPACING
42.3 30 40
39.9 31 39
37.7 32 38
Optimum vehicle speed
35.5 33 37
(Bold Print))
33.6 34 36
31.7 35 35
DECREASING HOLE
SPACING
30.0 36 34
28.3 37 33
26.7 38 32
25.2 39 31
23.8 40 30