Wheel Drive Control Adjustment - Snapper NSPVH21675 Safety Instructions & Operator's Manual

!
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.

Wheel Drive Control Adjustment

The drive handle (A, Figure 18) should engage the
transmission when the handle is pushed forward, and
should disengage the transmission when the handle is
pulled fully back.
Figure 18: Wheel drive controls
If the transmission does not engage or disengage,
adjustment may be performed as follows:
1. Remove the rear cover from the mower. Refer to the
section entitled "Rear Cover Removal & Installation".
2. With the drive lever pulled fully back in the 'DISENGAGE'
position, the spring (A, Figure 19) on the end of the
wheel drive control cable should have no tension.
Measure the overall length of the unextended spring (B).
A
Figure 19: Measuring the disengaged transmission spring
length
12
3. Push the drive lever fully forward, and measure the
!
length of the extended spring. The overall spring length
should increase by 0.020 – 0.025".
4. To adjust spring extension:
a.
b.
c.
5. Push the drive handle fully forward and recheck the
extended spring length. Repeat Step 4 as needed.
A
Figure 20: Adjusting the transmission spring tension
IMPORTANT: INCORRECT ADJUSTMENT CAN CAUSE
PREMATURE WEAR AND/OR DAMAGE TO THE WHEEL
DRIVE COMPONENTS.
B
Disengage the handle.
To increase (+) the extended spring length, rotate
the thumb wheel (A, Figure 20) upwards (counter-
clockwise, from operator's perspective).
To decrease (-) the extended spring length, rotate
the thumb wheel downwards (clockwise).
+
A
-
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