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Idle and Top No Load Adjustment Horizontal
and Vertical Models 200000, 210000
1. Start engine and run until it reaches
operating temperature.
2. Place throttle in SLOW position.
3. Hold throttle lever against idle speed
screw, and, using Tachometer #19200 or
#19389, adjust screw to obtain 1300 RPM.
Release throttle lever.
4. Using Tang Bender #19229 or #19352,
bend governed idle spring tang to obtain
1750 RPM (Figure 36).
Figure 36
5. Place throttle in FAST position.
6. Adjust screw to obtain correct Top No
Load RPM (Figure 37).
Figure 37
NOTE: Correct Top No Load RPM for each
model-type-trim can be found in the engine
replacement data on Briggs & Stratton websites.
Idle and Top No Load Adjustment Vertical
Models 280000, 310000, 330000
All carburetor mixture adjustments should be
made before adjusting governor speeds.
1. Start engine and run until it reaches
operating temperature.
2. Place control lever in idle position.
3. Hold throttle in closed position with finger,
adjusting idle speed screw to 1200 RPM.
4. Release throttle.
5. Set control to 1750 RPM and bend tang
(A, Figure 38) until it contacts remote
control slide (B).
6. Using Tang Bender #19229 or 19352,
bend spring tang to obtain the correct Top
No Load RPM.
NOTE: Correct Top No Load RPM for each
model-type-trim can be found in the engine
replacement data on Briggs & Stratton websites.
Figure 38
Initial Adjustment (All Models)
1. Install idle speed screws and spring.
Install idle mixture screw and spring.
2. Turn idle mixture screw in until it just
bottoms.
3. Then back out screw 1-1/4” turn. This will
permit the engine to start.
Final Adjustment (All Models)
1. Install complete air cleaner before starting
engine. Start and run engine for five
minutes at 1/2 throttle to bring engine up
to operating temperature.