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3. Engage lever, and roll mower back and forth sever-
al 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.
4. To adjust spring extension:
a. Disengage lever.
b. To increase extended spring length, loosen jam nut,
and rotate ferrule below adjustment turnbuckle, locat-
ed 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.
5. Engage lever and recheck extended spring length.
Repeat step 4 as needed.
IMPORTANT: INCORRECT ADJUSTMENT CAN CAUSE
DAMAGE TO THE TRANSMISSION.
4.2 WHEEL DRIVE CONTROL ADJUSTMENT
The wheel drive control lever should engage the trans-
mission when the lever is squeezed back against the
handlebar, and disengage the transmission when the
lever is released. See Figure 4.4.
If the transmission does not fully engage or disengage,
adjustment may be performed as follows:
1. Remove rear cover from mower. Refer to 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.
(Top of transmission; pulley removed for clarity)
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.
!
!
FIGURE 4.4
FAST
GROUND SPEED
CONTROL
WHEEL DRIVE
CONTROL
SLOW
DISENGAGE
ENGAGE
FIGURE 4.5
MEASURE
UNEXTENDED SPRING
TRANSMISSION
ENGAGE LEVER
(DISENGAGED)
SPRING HAS
NO TENSION
CABLE
FIGURE 4.5a
TRANSMISSION
ENGAGE LEVER
(ENGAGED)
EXTENDED SPRING - SHOULD BE LENGTH OF UNEXTENDED
SPRING PLUS 0.090 to 0.110 (3/32 to 7/64”) EXTENSION
FIGURE 4.5b
ROTATE FERRULE
OUT TO INCREASE
SPRING LENGTH
ROTATE FERRULE
IN TO DECREASE
SPRING LENGTH
FERRULE
TURNBUCKLE
LOOSEN JAM NUT