Smithco Spray Star 3180 (sn 300G056 – 300G065) Parts & Service Manual - Manual (Page 9)

7
Service
ADJUSTMENTS
SPRAY PUMP WITH BELT
Located to the right of the engine. The belt should have approximately 1 /
2
" (13mm) of deflection in the center of
the top strand. Loosen and tighten the 5 /
16
-18 x 1 1 /
4
set screw located on the foot of the pump mount.
SAFETY INTERLOCK SWITCH
To adjust the interlock switch on the back hydrostatic pump loosen the set screw on the front half of the switch,
with the ignition switch OFF. With a continuity tester connected across the switch, it should light with the shift
arm centered. Move the shift arm to the right or left and the light should go off. By turning the back half of the
switch clockwise it will reduce the amount of travel on the shift arm that is required for the light to remain on. The
light must be on ONLY with the shift arm centered.
MASTER BOOM SWITCH (FOOT SWITCH)
The master boom switch, located on the left floorboard is used to override the master switch on the computer
console of the spray systems. By pushing down it will turn on/off the booms. For the 440 System the Master
Switch on the computer must be off for the master boom control switch to work.
GROUND SPEED CONTROL (FOOT SWITCH)
The ground speed control does not work the same as an automotive type cruise. The ground speed control is
located on the center floorboard and is used to lock forward speed.
TO ENGAGE:
1. Flip rocker switch ‘On’ (green light).
2. Obtain desired speed with foot pedal.
3. Step on foot switch to lock speed.
4. Push foot switch again to disengage.
SPEED CALIBRATION NUMBERS
The speed calibration numbers for the Spray Star 3182 is 612.
SPRAY BOSS CONTROL
Engages and disengages speed boss. Forward is engage and all the way back is disengage. When the lever is
engaged it sets a stop for the accelerator. The accelerator pedal must be used to maintain this speed. To adjust
speed use the knob on the end of the lever, counter clockwise increases speed and clockwise decreases speed.
Disengage the lever and you will have full accelerator pedal range.
TOWING
When it is necessary to move the Spray Star 3180 without the engine running, there are 2 things that need to be
done. First, the bypass valve built into hydrostatic pump must be "open" by turning it
1 /
4
turn to open. The valve
is located on the back side of the pump. An "open" valve allows fluid to pass through the wheels freely. When
normal driven operation is desired, valve should be "closed" by turning it clockwise. Failure to "close" the valve
with engine running means no power to wheels. Secondly, the hand brake needs to be manually released. The
hand braek is located under the engine. To manually release the brake you must loosen the locknut and screw
in the stem to the bottom. Tighten the lock nut and pump handle until hard.
MANUAL BRAKE HAND PUMP MANIFOLD
The hand brake is located under the engine. The hand brake is con-
nected to he seat switch and automatically engages when operator
gets up from the seat. So when machine is not being driven, the ma-
chine is locked down. If engine is not running or you are towing the
machine you will have to manually release the brake. To manually
release the brake you must loosen the locknut and screw in the
stem to the bottom. Tighten the lock nut and pump handle until hard.