Briggs & Stratton 405777 Series Manual page 48

1. Use valve guide driver, Tool #19416 and install new in-
take valve stem seal.
a. Oil inner surface and lip of valve stem seal.
b. Press seal on to valve guide bushing until it bot-
toms, Fig. 18.
2. Install valves.
Note: Lightly coat valve stems with Valve Guide Lubricant
#93963 before installing valves.
3. Install valve springs with valve spring compressor, Tool
#19347, Fig. 20.
4. Assemble rocker arms and supports to cylinder head,
Fig. 21. Apply Loctite® 242 or similar sealant to threads.
a. Torque screws to 100 in. lbs. (11.0 Nm).
TSM
Fig. 18 − Install Valve Stem Seals
Fig. 19 − Install Valves
Fig. 20 − Install Valve Springs
TORQUE TO 100 IN. LBS.
(11.2 NM)
Fig. 21 − Install Rocker Arms
VALVE STEM
SEAL
(CUTAWAY VIEW)
7