Wheel Drive Control Adjustment - Snapper ESPV21, ESPV21S Safety Instructions & Operator's Manual

Section 4 - REPAIR & ADJUSTMENTS
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secure
away from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for
all components to cool.

4.2 WHEEL DRIVE CONTROL ADJUSTMENT

The wheel drive control lever should engage the
transmission when the lever is squeezed back
against the handlebar,
transmission when the lever is released. See
Figure 4.4.
GROUND SPEED
CONTROL
FAST
SLOW
If the transmission does not fully engage or disengage,
adjustment may be performed as follows:
1. Remove rear cover from mower.
Section "Rear Cover Removal & Installation".
2. With wheel drive control lever in 'DISENGAGE'
position (see Figure 4.4), spring on end of wheel
drive control cable should have no tension.
Measure overall length of unextended spring. See
Figure 4.5.
TRANSMISSION
ENGAGE LEVER
(DISENGAGED)
MEASURE
UNEXTENDED SPRING
FIGURE 4.5
(Top of transmission; pulley removed for clarity)
and disengage
WHEEL DRIVE
CONTROL
DISENGAGE
ENGAGE
FIGURE 4.4
Refer to
SPRING HAS NO
TENSION
CABLE
3. Engage lever, and roll mower back and forth
several times to ensure clutch dogs are fully
engaged. With lever engaged, measure length of
extended spring. Overall spring length should
increase by 0.090 – 0.110" (3/32 – 7/64"). See
Figure 4.5a.
TRANSMISSION
ENGAGE LEVER
(ENGAGED)
the
EXTENDED SPRING – SHOULD BE LENGTH OF UNEXTENDED
SPRING PLUS 0.090 to 0.110" (3/32 to 7/64") EXTENSION
4. To adjust spring extension:
a. Disengage lever.
b. To increase extended spring length, loosen jam
nut, and rotate ferrule below adjustment turnbuckle,
located on lower end of wheel drive control cable,
½ turn out from turnbuckle. Tighten jam nut. See
Figure 4.5b.
c. To decrease extended spring length, loosen jam
nut, and rotate ferrule ½ turn in toward turnbuckle.
Tighten jam nut. See Figure 4.5b.
TURNBUCKLE
LOOSEN JAM NUT
ROTATE FERRULE
OUT TO INCREASE
SPRING LENGTH
ROTATE FERRULE IN
TO DECREASE
SPRING LENGTH
5. Engage lever and recheck extended spring
length. Repeat step 4 as needed.
IMPORTANT:
CAUSE DAMAGE TO THE TRANSMISSION.
14
FIGURE 4.5a
FIGURE 4.5b
INCORRECT ADJUSTMENT
FERRULE
CAN