Governed Idle Adjustment; Adjust Top No Load Speed - Briggs & Stratton 405777 Series Manual

Governed Idle Adjustment

Perform adjustments exactly in order shown.
1. Move equipment control lever to SLOW position.
2. Hold throttle lever against idle speed adjustment screw
and adjust idle speed to 1200 RPM, Fig. 26. Release
throttle lever.
3. Bend governed idle tang to obtain 1750 RPM, Fig. 27.
4. With engine running at governed idle RPM, bend
throttle restrictor tang so that tang just contacts gover-
nor lever, Fig. 28.

Adjust Top No Load Speed

Refer to Service Engine Sales Microfiche, MS-6225 or
Service Engine Sales Manual, MS-4052, for Top No Load
RPM by engine model and type number.
1. Move equipment control to FAST position and check
RPM.
a. Bend tang to obtain correct RPM, Fig. 29.
Note: Governor spring tension adjustment must not
exceed ± 200 RPM, or the governor spring
must be replaced.
TSM
IDLE SPEED
SCREW
Fig. 26 − Adjusting Idle Speed
GOVERNED
IDLE TANG
Fig. 27 − Adjusting Governed Idle
THROTTLE RESTRICTOR
Fig. 28 − Adjusting Throttle Restrictor
TANG BENDER
Fig. 29 − Adjusting Top No Load Speed
CARBURETOR
THROTTLE
LEVER
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