Snapper SZT18336BVE User Manual

 

 
4.1  MOTION CONTROL ADJUSTMENTS 
4.1.1.   Neutral Adjustments 
When the machine is on a flat level surface and motion 
control levers are in their neutral or neutral lock 
positions, there should be no machine movement.  If 
movement is present, adjustment must be made to left 
and/or right transmission control rods (located to the left 
and right of the operator seat, under the control panels): 

1. Remove the hair pin and washer securing the 
rod fitting to the Motion Control Lever pivot bracket.  
See Figure 4.1.  Pull fitting end out from bracket. 
2.  Turn fitting clockwise one turn if machine moves 
in reverse, or counterclockwise if machine moves 
forward.   
3. Replace fitting into hole, securing with washer 
and hair pin. 
4. Start the machine.  With motion control levers 
left in their neutral lock positions, disengage the 
parking brake and check for movement.  If 
movement is still present, repeat steps 1-4 until 
movement ceases. 
5.  Repeat for other side if needed. 
 

 

 
 
 
 
 
 

 

 

4.1.2.   Neutral Return Spring Adjustments 
When the motion control levers are released, return 
springs assist them back to the neutral position.  See 
Figure 4.1a.  To adjust spring tension: 

1.  If a stronger return is desired, tighten the nyloc 
nut atop the return spring rod.   
2. If a weaker return is desired, loosen the nyloc 
nut atop the return spring rod.   
NOTE:  Be sure to adjust left and right return 
springs equally. 

4.1.4.   Motion Control Lever Alignment 
Correctly aligned Motion control levers will propel the 
mower forward in a straight line when levers are equally 
engaged into drive.  See Figure 4.1b.  If one 
transmission engages before another, loosen the lever 
adjustment screws, and adjust the lever forward or 
backward until levers are aligned.  See Figure 4.1c. 

 
4.1.3.   Tracking Adjustments 
When both motion control levers are fully engaged in 
forward drive, the machine should move in a straight 
line.  If the machine tracks (veers) left or right, a tracking 
adjustment must be made.  Each motion control lever is 
equipped with a tracking adjustment plate.  See Figure 
4.1b.  Moving the plate forward or backward adjusts the 
machine’s tracking: 

1. If mower tracks to the left, loosen the two torx 
screws on the left adjustment plate, slide plate 
forward approximately 1/8”, and retighten screws.  
(If plate is already as far forward as it can go, 
loosen the right plate and slide back 1/8”.)  Check 
machine tracking and repeat as needed.   
2.  If mower tracks to the right, loosen the two torx 
screws on the right adjustment plate, slide plate 
forward approximately 1/8”, and retighten screws.  
(If plate is already as far forward as it can go, 
loosen the left plate and slide back 1/8”.)  Check 
machine tracking and repeat as needed.