Install Cylinder Head; Adjust Valves - Briggs & Stratton 405777 Series Manual

INSTALL CYLINDER HEAD

1. Place cylinder head gasket over alignment dowels on
cylinder block, Fig. 22.
2. Install cylinder head assembly, Fig. 23.
a. Torque head bolts in sequence shown to 220 in.
lbs. (25.0 Nm).
3. Install push rods. Make sure push rods are inserted in
recess in tappets.
Note: Intake push rods are aluminum.
4. Compress valve springs and insert push rods into re-
cess in rocker arm adjustment screws, Fig. 24.

ADJUST VALVES

1. Set No. 1 cylinder at 1/4" (6.4mm) past TDC, compres-
sion stroke.
a. Adjust valves and check, Fig. 25.
Valve Clearance (cold) IN and EX .005" (0.13 mm)
b. Torque jam nut and adjusting screw to 60 in. lbs.
(7.0 Nm).
2. Set No. 2 cylinder at 1/4" (6.4mm) past TDC, compres-
sion stroke.
a. Repeat for No. 2 cylinder.
8
TSM
Fig. 22 − Install Cylinder Head Gasket
1
3
5
Fig. 23 − Install Cylinder Head Assembly
Fig. 24 − Install Push Rods
Fig. 25 − Adjust Valve Clearances
ALIGNMENT
DOWELS
4
2