Briggs & Stratton 405777 Series, Manual, Page: 28 / 102

3
5
Check Throttle, Choke Shaft And Body For
Wear
1. Lay carburetor on flat surface and check throttle and
choke shaft clearance as shown in Fig. 11.
Throttle shaft and choke shaft clearance must not exceed
.010” (.25 mm).
Fig. 11
−
Checking Clearance
2. Inspect throttle shaft and choke shaft for wear, Fig. 12.
Replace if worn.
If carburetor body is worn, replace carburetor.
Fig. 12
−
Checking Throttle And Choke Shaft
ASSEMBLE CARBURETOR
When assembling carburetor, use new seals and gaskets.
1. Assemble new seal to throttle shaft and insert into car-
buretor body.
Important: Install one throttle plate at a time. Check
throttle shaft for freedom of operation before installing
other throttle plate.
Note : Use LOCTITE ® 222 on screw threads.
Fig. 13
−
Install Throttle Shaft
THROTTLE
PLATES
SEAL
2. Install cover plate with new gasket.
Fig. 14
−
Install Cover Plate
COVER
PLATE
TSM