Install Piston And Connecting Rod - Briggs & Stratton 272147 Repair Manual

INSTALL PISTON AND CONNECTING
ROD
NOTE
: Install #1 piston and connecting rod first.
1. Oil piston rings, piston skirt, and compress rings
with ring compressor Tool
a. Place piston and ring compressor upside
down on bench with projections on
compressor facing up, Fig. 140.
b. Tighten ring compressor evenly until rings are
fully compressed.
c. Then loosen ring compressor very slightly so
that compressor can be rotated on piston skirt
while holding connecting rod.
250-144
Fig. 140
2. Lubricate cylinder bores and crankpin and rotate
crankshaft until it as at bottom of stroke
3. Install #1 piston with notch or offset casting mark
on piston toward flywheel side, Fig. 141.
Page 58
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#19070
TM
Vanguard Twin-Cylinder OHV Liquid-Cooled Engine
a. Push piston down by hand until connecting
rod is seated on crankpin.
NOTCH OR
FLYWHEEL
CASTING MARK
SIDE
TOWARD
FLYWHEEL SIDE
Fig. 141
4. Assemble connecting rod cap to rod with match
marks aligned
a. Torque screws to 125 in. lbs. (14.0 Nm).
5. Rotate crankshaft two revolutions to check for
binding. Rod should also be free to move
sideways on crankpin.
Repeat for #2 cylinder.
CAUTION:
The words "OUT-1" on #1 connecting rod
and "OUT-2" on #2 connecting rod must be facing PTO
side. Failure to use a torque wrench can result in loose
connecting rod screws causing breakage or tight
connecting rod screws causing scoring.
Fig. 142
Section 5 - Engine Assembly
"OUT 1" CYLINDER #1
"OUT 2" CYLINDER #2
PTO
SIDE
, Fig. 142.