Engine Assembly; Install Crankshaft; Piston And Connecting Rod; Assemble Piston Rings To Piston - Briggs & Stratton 272147 Repair Manual

TM
Vanguard Twin-Cylinder OHV Liquid-Cooled Engine
Section 5 - Engine Assembly
SECTION 5

ENGINE ASSEMBLY

INSTALL CRANKSHAFT

1. Lubricate mag. bearing and lips of oil seal with
engine oil and install crankshaft.
2. Lubricate and install new governor shaft oil seal in
cylinder. Then lubricate and install governor shaft
, Fig. 136.
Fig. 136
ASSEMBLE PISTON AND CONNECTING
ROD
Lubricate parts with engine oil and assemble #1 piston
and connecting rod, Fig. 137.
1. Offset casting mark on piston must face flywheel
side.
2. "OUT 1" on connecting rod must face PTO side
(opposite notch or casting mark on piston).
a. Install piston pin locks with needle nose pliers.
NOTCH OR
CASTING MARK
TOWARD
FLYWHEEL SIDE
Fig. 137
Lubricate parts with engine oil and assemble #2 piston
and connecting rod, Fig. 138.
Fig. 138

ASSEMBLE PISTON RINGS TO PISTON

Install rings in order shown, Fig. 139. Use ring expander,
Tool
rings.
"OUT 1"
CYLINDER #1
Fig. 139
1. Offset casting mark on piston must face flywheel
side.
2. "OUT 2" on connecting rod must face PTO side
(opposite notch or casting mark on piston).
a. Install piston pin locks with needle nose pliers.
"OUT 2" CYLINDER #2
when installing center and top compression
#19340
1. Install oil ring expander.
a. Install lower scraper ring.
b. Install upper scraper ring
2. Install center compression ring with I.D. mark up.
NOTE
: Center compression ring is identified by
black phosphate coating.
3. Install top compression ring with I.D. mark up.
TOP
COMPRESSION RING
(BARREL FACE)
SECOND
COMPRESSION RING
(TAPER FACE)
OIL RING
EXPANDER
NOTCH OR
CASTING MARK
TOWARD
FLYWHEEL SIDE
ID MARK
INDICATES
TOP OF
RING
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