Cylinder Head / Valve - BRP Johnson 4HP Service Manual

Cylinder Head / Valve

1. Apply Nut Lock to the mounting side threads of the rocker
arm pivot bolts.

Nut Lock
2. Tighten the bolts with the rod guide plate to the specified
torque.

Deep socket wrench

Rocker arm pivot bolt: 10 N·m (1.0 kg-m; 7.0 lb-ft)
3. Apply engine oil to the valve stems.
4. Install the valves 1 / 2, the valve springs 3 and the
valve spring retainers 4 to the cylinder head.
5. Install the valve cotters 5 while compressing the valve
spring using the special tools.

Valve lifter
Attachment
Tweezers
POWERHEAD
REASSEMBLY
6-37