Controls System Maintenance; Adjusting The Throttle; Hydraulic System Maintenance; Changing The Hydraulic Fluid - Toro 03170 Operator's Manual

Controls System
Maintenance

Adjusting the Throttle

1. Position the throttle lever rearward so that it stops
against the control panel slot.
2. Loosen the throttle cable connector on the injection
pump lever arm (Figure 71).
Figure 71
1. Injection pump lever arm
3. Hold the injection pump lever arm against the low
idle stop and tighten the cable connector.
4. Loosen the screws securing the throttle control to
the control panel.
5. Push the throttle control lever all the way forward.
6. Slide the stop plate until it contacts the throttle
lever, and tighten the screws that secure the throttle
control to the control panel.
7. If the throttle does not stay in position during
operation, torque the locknut used to set the friction
device on the throttle lever to 40–55 inch-lb (5–6
N-m).
Note: The maximum force required to operate the
throttle lever should be 20 lb (27 N-m).
Hydraulic System
Maintenance

Changing the Hydraulic Fluid

Service Interval: Every 400 hours
If the fluid becomes contaminated, contact a Toro
distributor to flush the hydraulic system. Contaminated
hydraulic fluid looks milky or black when compared to
clean fluid.
1. Turn the engine off and raise the hood.
2. Disconnect the hydraulic line (Figure 72) or remove
the hydraulic filter (Figure 73) and let the hydraulic
fluid flow into a drain pan.
1. Hydraulic line
1. Hydraulic filter
3. Install the hydraulic line when hydraulic fluid stops
draining.
4. Fill the reservoir (Figure 74) with approximately
3.5 U.S. gallons (13.2 l) of hydraulic fluid; refer to
Checking the Hydraulic System.
52
Figure 72
Figure 73