Valve Guide Bushing Identification; Special Instructions; Install Bushing; Finish Reaming - Briggs & Stratton Twin Cylinder L-Head Repair Manual

Valve Guide Bushing Identification

See Fig. 18 to identify bushing that has been removed.
Then select correct replacement bushing shown.

Special Instructions

Two grooves on replacement bushing, #231218, go
down.
Replacement bushing #230655 or #261961 can be
installed either way.

Install Bushing

1. Using bushing driver, #19204, press in new
bushing until it bottoms, Fig. 19.

Finish Reaming

NOTE: Bushing #230655 does not require finish
reaming, however it is recommended to
ensure that the entire guide is clean and
free of foreign material.
1. Finish ream guide with reamer #19233, and pilot
guide #19234, Fig. 20.
a. Lubricate reamer with Stanisol or kerosene.
2. Ream clockwise through entire guide into valve
tappet chamber, Fig. 20.
3. Keep turning reamer clockwise when removing
reamer from guide.
a. Flush out all chips.

REFACE VALVES AND SEATS

Valve faces may be resurfaced to:
Intake: 30°
Exhaust: 45°
See Fig. 21 for dimensions for intake and exhaust
valves.
NOTE: In most instances it is more economical to
replace the valves than to reface them.
Lap valves and seats with valve lapping tool, #19258
and valve lapping compound, Tool #94150.
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(.366" (.367"
(9.3 mm) O.D.) (9.32 mm) O.D.)
BRASS BRASS
USE USE
231218 231218
Fig. 18 – Bushing Identification
BUSHING
DRIVER
19204
REPLACEMENT
BUSHING
Fig. 19 – Install Bushing
Fig. 20 – Finish Ream
3/64" – 1/16"
(1.2 mm – 1.6 mm)
Fig. 21– Valve Dimensions
(.379" (.440" (.441"
(9.63 mm) O.D.) (11.18 mm) O.D.) (11.2 mm) O.D.)
BRASS GRAY COPPER
USE USE USE
230655 261961 261961
FINISH
REAM
THROUGH
TO VALVE
TAPPET
CHAMBER
1/32"
MINIMUM
SEATING AREA CENTERED
ON VALVE FACE
7