Adjusting The Engine Controls - Toro Sand Pro 2040Z Operator's Manual

Adjusting the Engine Controls

Adjusting the Throttle Control
Proper throttle operation depends upon proper adjustment of
the throttle control. Before adjusting the carburetor, ensure
that the throttle control is operating properly.
1. Loosen the clamp screw securing the throttle-cable
housing to the engine
Figure 66
1. Clamp screw (choke-cable
housing)
2. Choke-cable housing
2. Move the throttle control forward to the Fast position.
3. Pull up the cable housing of the throttle cable
66) until the throttle cable has almost no slack, and
tighten the clamp screw.
4. Tighten the clamp screw and check the engine speed:
•
High idle: 2750 to 2950 rpm
•
Low idle: 1450 to 1650 rpm
(Figure 66).
G023652
3. Throttle-cable housing
4. Clamp screw
(throttle-cable housing)
(Figure
Adjusting the Choke Control
1. Loosen the clamp screw securing the choke-cable
housing to the engine
2. Push the choke control down to the Open position;
refer to Choke Control (page
3. Ensure that the choke valve on the carburetor is fully
opened.
4. Pull up the cable housing of the choke cable
until the choke cable has almost no slack, and tighten
the clamp screw.
5. Ensure that the choke valve moves to the fully closed
1
position when you pull the choke control outward and
to the fully opened position when you push the choke
control downward.
2
Adjusting the Engine Governor Speed
Control
3
WARNING
The engine must be running during adjustment of
the engine governor speed control. Contact with
4
moving parts or hot surfaces may cause personal
injury.
• Ensure that the control handles are in the
neutral-locked position, and set the parking
brake before performing this procedure.
• Keep hands, feet, clothing, and other body parts
away from any rotating parts, the muffler, and
other hot surfaces.
Adjust the low-idle speed as follows:
1. Start the engine and let it run at half throttle for
approximately 5 minutes to warm up.
2. Move the throttle control to the Slow setting.
3. Push the spring end of the governor arm downward
(Figure 67).
1. Governor arm
4. Adjust the stop screw on the carburetor
that the idle speed is 1350 to 1550 rpm.
Note: Check the speed with a tachometer.
49
(Figure 66).
18).
(Figure
1
Figure 67
(Figure
66)
G023671
68) so