Briggs & Stratton Twin Cylinder L-Head, Repair Manual

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4
Valve Spring Retainers
Fig. 7 shows the two styles of valve spring retainers
used.
NOTE: When removing valves and valve springs,
identify parts to prevent interchanging.
WARNING: VALVE SPRINGS are under high
pressure! Hold shop rag around spring and
loosen spring compressor slowly to release
pressure from spring. Wear eye protection
when working with valve springs.
Fig. 7 – Valve Spring Retainers
Illustration 1 Illustration 2
ROTATOR
STEM
COLLARS
RETAINER
NOTE: Remove valves from one cylinder at a
time.
Remove Exhaust Valve
1. Rotate flywheel so that both valves to be removed
are fully closed with piston at TDC compression
stroke.
2. Insert one jaw of Valve Spring Compressor, Tool
#19063, between wall of valve tappet chamber
and exhaust valve spring. The other jaw goes
below valve spring retainer.
3. Tighten compressor until spring is fully
compressed and remove split retainers.
4. Remove exhaust valve from guide. Then, remove
exhaust valve spring and compressor, Fig. 8.
NOTE: Exhaust valve springs are dyed RED. DO
NOT MIX.
Fig. 8 – Removing Retainers – Exhaust
SPLIT
RETAINER
TOOL
#19063
Remove Intake Valve
1. Insert one jaw of Valve Spring Compressor,
Tool #19063, between intake valve spring and
retainer. The other jaw is placed on outside wall of
valve tappet chamber around intake valve guide,
Fig. 9.
2. Tighten compressor until spring is fully
compressed and remove spring retainer.
3. Remove intake valve from intake valve guide.
Then, remove intake valve spring and discard
intake valve seal. DO NOT REUSE OLD SEALS.
Repeat procedure for other cylinder.
Fig. 9 – Removing Retainer – Intake
RETAINER
LOOSE
ON
VALVE