Drive System Adjustment: Cvt - Cub Cadet 1000 SERIES Service Manual

17.15. Remove the belt from the tractor.
NOTE: There were a small number of tractors
made using a CVT drive and a 2-speed
(L-H-N-R) GT transaxle. The belt must pass over
the center mounted gear selector on these mod-
els for removal. Remove the knob from the gear
selector, and remove the shift gait from the
fender assembly to provide clearance.
17.16. Assembly notes:
• Install the belts by reversing the order of the
removal process.
• The engine drive pulley is installed on the drive
shaft with the key side facing down.
• Line up the key on the PTO clutch during assem-
bly.
• There is a large flat washer that goes on top of
the PTO clutch during assembly.
• Torque the PTO clutch bolt during assembly.
• When installing the belt guide, make sure that it
passes through the cutout in the PTO clutch. this
acts as a anti-rotation bracket. See Figure 17.16.
Cutout
Figure 17.16
18.

DRIVE SYSTEM ADJUSTMENT: CVT

18.1. Make an operational test of the tractor:
• The tractor should not "creep" when the trans-
mission is in gear and the drive pedal is not
depressed.
• On level ground, with the brake released, the
gear selector should slip smoothly into gear. It is
normal for gear engagement to be more difficult
on a grade, or with the brakes applied because it
is more difficult for the drive dogs to engage
under load or bind.
• The tractor's forward ground speed should vary
smoothly between 0 and 5.2 MPH when the
drive pedal is depressed progressively to the
end of it's travel.
• It is normal for the cruise control to hold a mow-
ing speed that is about 10% less than the 5.2
MPH transport speed.
• If the tractor performs as described, no adjust-
ment is required.
18.2. Diagnosis: If the tractor does not move at all,
and the engine does not seem to be laboring as
the pedal is depressed, the issue may be in the
CVT belt system, the shift linkage leading to the
transaxle, or within the transaxle itself.
18.3. To isolate the CVT belt system:
• Turn-off the engine.
• Release the parking brake.
• Place the gear selector in any motion gear.
• Attempt to push the tractor.
• If the tractor rolls, examine the shift linkage.
• If the wheels lock when a gear is engaged, the
transaxle and shift linkage are not likely to be the
problem.
18.4. If the tractor does not move at all, and the
engine seems to be laboring as the pedal is
depressed, the issue may be in the brake, or
within the transaxle itself:
• Turn-off the engine.
• Release the parking brake.
• Place the gear selector in Neutral.
• Attempt to push the tractor.
• If the tractor rolls with difficulty, examine the
brakes as described in the "BRAKE ADJUST-
MENT: CVT" section of this manual.
18.5. If the problem can be isolated to CVT belt drive
system, make a visual inspection of the CVT belt
drive system:
• Turn the engine off, and allow it to cool before
starting to work on the tractor.
• Remove the cutting deck.
• Lift the seat.
• Disconnect the battery cables, negative cable
first, using a 7/16" wrench
• Remove the battery hold-down.
27
Series 1000 and 1500