Toro Groundsmaster 3280-D Service Manual page 42

Adjust Engine Speed
Gasoline Engine: Adjustments
1. Allow engine to reach operating temperature before checking or adjusting
engine speed. Ensure that the throttle control is adjusted properly before
adjusting engine speed; refer to
2. Park machine on a level surface, lower cutting deck (or implement), and
engage parking brake. Ensure that the PTO switch is O
gain access to engine controls.
3. With engine running, move remote throttle control lever to F
4. Using a tachometer, check that the engine is operating at 3,100 to 3,250 rpm.
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1. Speed control lever
If high idle speed is incorrect, adjust high speed screw on governor bracket
(Figure 9).
A. Loosen locknut on high speed screw.
B. Adjust high speed screw to obtain 3,100 to 3,250 rpm.
C. Tighten locknut. Check high speed.
5. Move remote throttle control lever to S
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1. Carburetor
6. Rotate and hold carburetor throttle lever against the idle speed screw
10). Using a tachometer, check that the engine idle speed is 1,400 to 1,550
rpm. If idle speed is incorrect, adjust carburetor idle speed screw to obtain
1,400 to 1,550 rpm.
Adjust Throttle Control (page
Figure 9
2. High speed screw
position.
LOW
Figure 10
2. Throttle lever
Page 3–8
3–6).
. Raise hood to
FF
position.
AST
3. Locknut
3. Idle speed screw
(Figure
Groundsmaster ® 3280-D/3320
05138SL Rev B