Snapper SPLH153KW, SPLH173KW, SPA361, SPA481, SPA521, SPA611

SECTION 4 - SERVICE

4.4 TRACTION CONTROL NEUTRAL ADJUSTMENT

The Traction Control Neutral Adjustment procedure is sensitive. The following steps and WARNINGS must be followed very carefully.

WARNING

Several steps of the Neutral Adjustment procedure require that the engine be started. Exercise extreme CAUTION while making adjustments while engine is running to avoid HOT engine components, rotating components, run over or entrapment types of injuries.

IMPORTANT: To complete this procedure a steel rod 5/16” diameter and 20” long will be required. DO NOT begin this procedure without it.

1.Place machine on smooth level surface. Stop engine and remove keys.

2.Raise rear of machine just high enough for rear wheels to clear ground. Block machine securely.

3.Latch both Traction Levers in Neutral.

4.Insert rod (5/16” diameter x 20” long) through alignment holes in the left and right traction control shift lever arms and the tank support bracket. The rod should pass through both the left and right traction control shift lever arms. See Figure 3.9.

5.Disconnect left & right swivels from the left and right traction control arms and loosen swivel jam nuts. See Figure 3.8.

6.Adjust swivel (Clockwise or Counter-Clockwise) until the pin on the swivel aligns perfectly with the hole in the traction control arm. The Traction Lever must be held in the Neutral Latch position when making this adjustment. Complete this adjustment for both left and right swivels. Carefully reattach and secure swivels to control arms. Tighten swivel jam nuts. IMPORTANT: Both the left and the right swivels must be installed in the same traction control arm speed range setting. Mid range (middle hole) setting is recommended.

7.Remove steel rod from shift lever arms.

8.Check to insure machine is securely blocked. Start engine. Drive wheels should not rotate with both Traction Levers latched in the Neutral position. If no rotation is observed the adjustment procedure is complete. If wheels do rotate proceed to next step. STOP ENGINE.

9.Wheel rotation will be stopped by adjusting the eccentric on the pump arms on the right and left pumps. Turning the eccentric slightly clockwise or counter-clockwise will synchronize the pump and traction controls for Neutral. See Figure 3.11. To turn the eccentric, first loosen the bolt in the pump control arm and the nut and bolt fastening the eccentric to the pump control arm. With both Traction Levers latched in Neutral, start engine. Turn eccentric slightly clockwise or counter- clockwise until wheels stop rotating. Tighten control arm bolts and eccentric nut and bolts. Check for wheel rotation. Repeat eccentric adjustment if needed.