Simplicity CFC Series Operator's Manual page 40

Adjustments
Spring-Centered Lever
Control levers should be adjusted so that levers automatically
return to neutral position when released. Before performing
adjustment, make sure "Control Lever Adjustment" and
"Neutral Adjustment' have been performed.
1. Block frame up so both drive wheels are off the ground.
2. Place weight in operator's seat to start engine. Do not
start engine.
3. Make sure that "Control Lever Adjustments" and
"Neutral Adjustment" are correct (refer to proceeding
adjustments).
4. Loosen spring tension completely on friction pad (refer
to following adjustment).
5. Loosen nut (A, figure 22) on top of turnbuckle (B) and
adjust turnbuckle up or down.
AwARNtNG
Do not adjust turnbuckle with engine running. Hydro
pump fan is too close to turnbuckle to safely perform
adjustment.
6. Restart engine and check control lever position. Move
control lever forward and backward and check if lever
returns to neutral position and wheel does not rotate. If
wheel rotates forward, turnbuckle assembly must be
lengthened (turnbuckle will move down). If wheels rotate
backwards, turnbuckle assembly must be shortened
(turnbuckle will move up).
A. Nut
B. Turnbuckle
C. Tension Spring
D. Stationary Spring
E. Friction Pad
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