C and D series mowers
24
Reasembly notes:
18.
The pinion gear on the speed control lever must be
centered in the rack that moves the clutch cable
bracket. See Figure 3.20.
•
As the speed control lever pivots the actuator in
one direction, the clutch cable bracket moves in
the opposite direction.
•
The actuator draws the speed control cable in,
closing the sheave on the transmission pulley.
- AND-
•
The clutch bracket eases the clutch cable ten-
sion to counter-act the tightening of the belt that
results from the growth of the circumference of
the pulley.
19.
Reassemble the drive control housing by reversing
the process of disassembling it.
20.
Carefully slip the housing back over the handlebars, and secure it with the four screws.
21.
Test run the mower in a safe place before returning it to service.
21a. Check all safety features.
21b. Test the speed control mechanism while the engine is running, to make sure the full range of speeds is
available.
21c. Adjust the thumb roller on the bottom side of
the speed control assembly to set the correct
belt tension.
•
Rolling the adjuster toward the front of the
mower will increase belt tension. There is an
embossed arrow pointing in this direction , adja-
cent to the roller.
•
Rolling the adjuster toward the rear of the
mower will decrease belt tension.
•
Too Tight:
If the speed control lever jumps
from Speed #4 to Speed #3, or from Speed #3
to Speed #2, when the drive clutch lever is
engaged with the engine running, the belt ten-
sion is too high.
•
Too Tight:
If the mower wants to “creep” when
the speed control lever is in Speed #4 and the
drive clutch lever is not squeezed, the belt tension is too tight. If rolling the adjuster toward the rear of the
mower does not stop the creeping, further investigation is required.
•
Too Loose:
If the mower does not have sufficient drive force to spin its wheels on smooth concrete (not a
broomed or florette surface) with the drive clutch engaged, and the speed control lever set for Speed #1,
the belt tension is too low, and the adjsuter should be rolled toward the front of the mower to tighten the
belt.
r
Figure 3.20
Clutch cable
bracket
Rack teeth
Speed
control lever
r
Figure 3.21
Clutch tension adjuster
Handle folded-up for service access
