Mow Speed; Lift Springs; Lift Switch - Jacobsen LF 3810 Dealer's Manual

4 ADJUSTMENTS

4.12 MOW SPEED _____________________________________________________________

Cutting quality is better at speeds well below the transport
speed of the tractor. An initial mow speed of 7.5 mph (13.7
kph) is set at the factory and should be satisfactory for most
cutting conditions. Local turf conditions however may
respond better to a slower speed.
To set mow speed, loosen jam nut (S) and adjust stop screw
up to reduce speed, down to increase speed. Tighten nut to
hold adjustment in place.

4.13 LIFT SPRINGS ____________________________________________________________

The lift springs can be adjusted so the exposed bolt thread
(T) is zero for maximum traction or turned out to it's
maximum limits to help the reels follow uneven turf. Do not
exceed these values or tractor damage may result
The initial weight setting should be made with the front reels
weighing 10 lb (4.5 kg) more than the center and wing reels.
Individual adjustment can then be made from this point to fit
specific turf conditions.
!
WARNING
To prevent injury, disconnect lift springs before removing
mower.
Do not raise front lift arms when the operator's platform
is opened. The platform could be forced into the closed
position causing bodily injury or damage to operator's
platform.

4.14 LIFT SWITCH _____________________________________________________________

Position Magnets (V) so that a gap of 0.010 - 0.050 in.
(0.254 - 1.25 mm) is maintained between the switch and
magnet for each position.
Use a Volt/Ohm meter to check if lift (U) or lower (W) switch
closes when center handle is moved to corresponding
position. Adjust magnets (V) as necessary.
18
To disconnect springs for reel removal, fully raise all mowers
to transport position and install transport locks. Remove bolt
(T) from each mower. Remove transport locks and lower the
reels to the ground.
!
0.01 - 0.05
S
T
T
W
V
Lower Position Lift Position
Figure 4K
Figure 4L
V
U
0.01 - 0.05
Figure 4M