Adjusting The Throttle Control; Adjusting The Choke Control; Adjusting The Carburetor And Speed Control - Toro 04357 Operator's Manual

Adjusting the Throttle Control

Proper throttle operation is dependent upon proper
adjustment of the throttle control. Before adjusting the
carburetor, ensure that the throttle control is operating
properly.
1. Loosen the cable clamp screw securing the cable to
the engine (Figure 49).
1. Throttle casing clamp
screw
2. Throttle cable
3. Swivel
4. Stop
2. Move the remote throttle control lever forward to
the Fast position.
3. Pull firmly on the throttle cable until the back of the
swivel contacts the stop (Figure 49).
4. Tighten the cable clamp screw and check the engine
RPM setting.
• High Idle: 2800 to 2900 RPM
• Low Idle: 1550 to 1750 RPM

Adjusting the Choke Control

1. Loosen the cable clamp screw securing the cable to
the engine (Figure 49).
2. Move the remote choke control lever forward to the
Closed position.
3. Pull firmly on the choke cable until the choke
butterfly is completely closed, then tighten the cable
clamp screw (Figure 49).
Figure 49
5. Choke casing clamp screw
6. Choke cable
7. Choke butterfly
Adjusting the Carburetor and
Speed Control
Important: Before the carburetor and speed
control are adjusted, the throttle and choke controls
must be adjusted properly.
The engine must be running during adjustment
of the carburetor and speed control. Contact
with moving parts or hot surfaces may cause
personal injury.
• Shift into neutral and engage the parking
brake before performing this procedure.
• Keep hands, feet, clothing, and other body
parts away from the cutting blades, rotating
parts, the muffler, and other hot surfaces.
1. Start the engine and let it run at half throttle for
approximately five minutes to warm up.
2. Move the throttle control to the Slow setting. Adjust
the idle stop screw counterclockwise until it no
longer contacts the throttle lever.
3. Bend the governed idle spring anchor tang
(Figure 50) to attain an idle speed of 1625±50 RPM.
Check the speed with a tachometer.
Shown with Air Cleaner Removed
1. Governed idle spring
anchor tang
35
Figure 50
2. High speed spring anchor
tang