Cub Cadet THE TANK S7237 - Manual (Page 25)

25
Performance Adjustments
A. Engine RPM Check and Adjustment
1. Verify that the speed control pedals are in the neutral
position, the parking brake is on, and the PTO drive
is disengaged.
2. Start the mower and let it run at approximately half
throttle for 3-5 minutes to bring the engine up to
operating temperature.
3. Locate the Hour Meter/Tachometer/ Service Minder
display on the right hand operator control panel. (See
Fig.4 on page 10 of the manual) This display defaults
to Tachometer mode when engine is running.
4. Move the throttle lever to the high speed position
and note the RPM reading on the display.
5. Move the throttle lever back to the low speed posi-
tion and again note the displayed RPM’s.
6. Compare these noted RPM readings to the specifica-
tions in Table 1, for the engine that is on your
mower.
7. If the readings do not correspond to the ranges in the
table, refer to the engine owner’s manual for the
proper adjustment procedures.
8. If adjustments per the engine operator’s manual do
not result in proper RPM readings, contact your ser-
vice technician.
9. Note: The throttle cable sheath may shrink or slip
over time, changing the relationship between the
throttle lever on the left hand operator control panel
and the throttle arm on the engine. To readjust the
throttle cable:
a. Make sure the engine is off, and the speed control
pedal is in the neutral position. Set the parking
brake, and disconnect and ground both of the
spark plug wires.
b. Locate and loosen the cable clamp on the engine
throttle plate.
c. Place the operator’s throttle lever to the high
speed position and then slide the cable through
the clamp until the throttle arm is in the full throt-
tle position. (Ref. Engine owner’s manual)
d. Tighten the cable clamp.
e.
Move the operator’s throttle lever between high
and low speed and verify that the engine throttle
arm also moves through it’s full range of motion.
f. Repeat as required to obtain proper throttle
adjustment.
g. Verify proper throttle adjustment by checking
RPM readings as outlined above.
B. Deck Corner Ball Wheel Roller Settings
1. Matching the set heights of the ball rollers on the
front and the four corners of the mower deck to the
desired cut height will prevent edge scalping and
minimize any side-to-side variance in cut height.
2. There are four height adjustment holes in the bracket
that mount the ball rollers to the deck.
a. Use the top set of holes for cut heights of 1 to 1-1/
2 inches.
b. Use the second set of holes for a 2 - 2-1/2 inch cut
height.
c. Use the 3rd set of holes for 3 - 3-1/2 inch cut height.
d. Use the bottom set of holes for cut heights of 4 inches
or higher.
C. Deck Center Anti-Scalp Roller Settings
1. The rear rollers help prevent the scalping of high
spots and uneven terrain across the center section of
the deck.
2. The rollers on the rear of the deck can be adjusted
downward one inch.
a. Lowering the roller will increase the striping
effect left behind the mower.
b. This positioning of the rear roller will also help to
filter the mulched grass clippings into the turf.
c. Roller should not be lowered if the cut height is
set at 2-1/2 inches or lower.
D. Steering Wheel Adjustment
1. Proper steering wheel and seat adjustment will result
in the following:
a. In the neutral position with hands on the steering
wheel,
1. Operator’s upper arms should be relaxed and
approximately vertical.
2. Operator’s forearms should be approximately
horizontal.
3. Operator’s back should stay in contact with the
seat back.
4. Steering column should not contact operator’s
legs.
2. The steering column can be repositioned forward/
downward or rearward/upward.
3. Set the seat to the preferred operating position.
a. Adjustment lever is located under the front edge of
the seat.
b. The seat has over 8 inches of front-to-rear adjust-
ment available.
4. Check the results of any adjustments to the condi-
tions described in section a, above. Repeat any
adjustment procedures as required until all condi-
tions are met.
E.Deck leveling Procedure
1. Park the mower on a flat paved surface, engage the
parking brake, shut off the engine, remove the key from
the ignition switch, disconnect the spark plug wires and
Description High RPM Spec. Low RPM Spec.
31 & 37 Kawasaki 3600 +/-50 1550 +/-100
NOTE: RPM Specs. are for free running engines under no load.