Operator's Manual

Figure 7

1. Coring head support (2)

Important: Never exceed 540 tractor PTO rpm or you

may damage the aerator.

3. In the direction of travel, measure the distance between tine

holes (one tine stroke hole to another). The distance should

be:

7/8 in. tines–14.6 to 15.2 mm (5-3/4 to 6 in.).

3/4 in. tines–7.3 to 7.62 mm (2-7/8 to 3 in.).

Note: Turf hold condition can also show how well the trac-

tor and the aerator match. If the rear of the tine holes are

torn, the tractor is too slow. By contrast, if front of the tine

holes are torn, the tractor speed is too fact.

4. If the hole spacing is short (coring speed too fast), increase

spacing: replace driver gear with gear having less teeth and

driven gear with gear having more teeth (Fig. 6). If the

hole spacing is long (coring speed too slow), increase the

driver gear teeth and decrease driven gear teeth quantities;

see the gear selection chart.

5. Operate the machine and repeat steps 1–4.

IMPORTANT: Timing can sometimes by fine tuned by

gradually regulating the tractor’s tire pressure. Lowering

tire pressure provides closer spacing and raising tire pres-

sure will increase the spacing.

CAUTION: Do not exceed the maximum or minimum inflation

pressures as recommended by the tire manufacturer.