Jacobsen GA 24, Technical Manual

Page: 15 / 88

ADJUSTMENTS 6
15
6 ADJUSTMENTS
6.1 GENERAL ________________________________________________________________
1. Adjustments and maintenance should always be
performed by a qualified technician. If proper
adjustment cannot be made, contact an authorized
Jacobsen Dealer.
2. Replace, do not adjust, worn or damaged
components.
3. Long hair, jewelry, or loose fitting clothing may get
tangled in moving parts. Remove jewelry, tuck in
loose fitting clothing, and tuck long hair under a cap.
4. Do not change governor settings or overspeed the
engine.
6.2 TURF GUARD _____________________________________________________________
The Turf Guard (C) is used to prevent the turf from lifting
up as cores are pulled out. The pressure on the Turf
Guard can be adjusted by increasing or decreasing
tension on the springs
(A) .
Add or remove spacers (B) above spring as required so
the turf guard provides enough presure to prevent turf
from lifting up, but not so much that they mark or cut the
turf.
Figure 6A
6.3 AERATOR DRIVE IDLER CABLE _____________________________________________
1. Engage OPC handle and tine operation. [ See 4.1]
2. Adjust cable nuts (D) as required to obtain 0.18 inch
(3.3 mm) deflection with a 4.4 lb (2.0 kg) push for
new belt or 3.0 lb (1.4 kg) push for used belt at
location shown.
3. Addition adjustment available if required by moving
cable bracket and at handle.
Figure 6B
WARNING
To prevent injury, disengage master clutch, lower
aerator head to the ground, stop engine, and
disconnect spark plug wire before making any
adjustments or performing maintenance.
Make sure the aerator is parked on a solid and level
surface. Never work on a aerator that is supported
only by the jack. Always use jack stands.
If only the front or rear of the unit is raised, place
chocks in front of and behind the wheels that are not
raised.
!
CAUTION
Be careful to prevent entrapment of the hands and
fingers between moving and fixed components of the
machine.
WARNING
To prevent injury, support upper frame with blocks
when working on unit with aerator head raised.
Hydraulic lines may rupture or lever could be tripped,
causing unit to drop rapidly.
!
!
A
B
D
0.18 inch (3.3 mm)
4.4 lb (1.81 kg) New
3.0 lb (1.36 kg) Used