Fast Idle - Toro Workman 3000 Series Service Manual

Fast Idle

Fast idle cam
Fast idle
adjusting screw
1. Make sure engine coolant temperature is below 10�C
(50�F).
2. Start the engine. Make sure idle speed during the
warm up period changes smoothly as coolant tempera ­
ture increases and becomes stable at the standard
speed.
Idle speed
3. If anything abnormal occurs during step 2, adjust fast
idle speed. Turn adjusting screw clockwise to increase
fast idle speed and counterclockwise to decrease.
NOTE: If fast idle speed (during warm up) is normal, cam
lever mating mark (scribed line) and cam follower mat­
ing mark (punch mark) should align at the thermo wax
element temperature of 23�C (73�F).
IMPORTANT: Alignment of these marks are precise­
ly adjusted at the factory. When doing ordinary ad­
justments, do not change the setting by turning the
adjusting screw.
Workman 3000/4000 Series
Choke adjusting screw
Figure 39
1200 + 100 RPM
Page 3 – 27
Choke lever
Cam follower
Thermo–wax element
Fast idle
adjusting screw
Figure 40
Mating
mark
Figure 41
Liquid Cooled Gas Engine
Choke pinion