Scag Power Equipment ST 12B Technical Manual page 5

indicator. Do Not Fill more than 3/16" above plates.
Allow battery to set for 20 minutes. Refill to level.
Battery may be placed on charge at 3 amperes for
maximum capacity (not usually necessary).
18
.
CAUTION: Reinstall battery. Connect positive
lead first.
CAUTION: Note that battery contains sulfuric acid
which is poison and causes severe burns. Avoid
contact with skin, eyes or clothing. Flush spills with
water.
19
.
Check engine crankcase. It was filled at the
factory, but may need additional oil for proper level.
20.
Fill fuel tank.
21.
Open shut-off under tank.
22.
After initial run and inspection of cutter belt,
replace belt cover.
ADJUSTMENTS
1
.
Check that all belts clear their belt guides by
about 1/8 to 3/16 inch. Adjust guides if necessary.
2
.
Adjust blade drive belt by turning turnbuckle so
that about 10 lb. pull sideways deflects belt 1/2 inch. Do
Not Overtighten! Only a moderate force should be
used on control lever.
3
.
Adjust cutter deck belt by turning lock nut on "J"
pull rod where applicable. About 10 lbs. pull sideways
deflects belt 1/2 inch. Test belt at short section
between center spindle and left hand spindle (do not
test long section at rear of deck).
IMPORTANT
Readjust new belt tensions after 4 hours of operation
and again after about 24 hours to take up initial stretch.
4
.
Transaxle shifter neutral may require adjustment
so that starter engages at neutral stop. Rotate swivel
joint if necessary to lengthen or shorten the shift rod.
5
.
Set parking brake before starting engine.
6. Please Remember To start engine, three safety
switches must be activated:
a. The shift lever must be in neutral.
b. The mower engage lever must be pulled all the
way back (and held there).
c. The left foot safety switch pedal must be
depressed.
7
.
Run new engine at half speed about 5 minutes
before applying any load.
8
.
Adjust fuel-air mixture valves according to
specifications in engine manual.
9
.
To release parking brake, depress right hand foot
pedal, lift brake lever and rotate 90 degrees.
10.
Readjust neutral, if necessary.
FOOT PEDAL
11.
Place a 2x4 board on edge between the pedal and
foot rest plate (approximately 4 inches). Adjust foot
pedal control by adjusting the two cable mounting nuts
located on each end of the sheath. The pedal should be
about 4-1/4 inches above foot rest plate when correctly
adjusted.
BRAKE ADJUSTMENT
12.
Always make sure foot pedal is adjusted
correctly before adjusting the brake. Brake must be
adjusted in following sequence: With transaxle belt
engaged (foot pedal in up position) move brake cable
pulley fore or aft in its slot to permit transaxle brake
lever to rest against its stop. Then adjust brake lever
nuts to permit free movement of lever about 1/8 inch
from stop by pushing lever with hand. (Disc must not
"drag" on brake pads when adjusted.) Lock jam nut
securely. If brake lever is too tight, shifting may be
impossible and brake wear will be excessive.
TIRE PRESSURES
13
.
Recommended pressures:
Caster Wheels 25 PSI
Rear Steering Wheel 25 PSI
Drive Wheels 15 PSI
6