49
3. Install a pin retainer into groove on open side of piston
pin bore. Ensure retainers are firmly seated in grooves.
4. Using Piston Ring Expander #19340, install oil ring and
spring expander, then the center ring, then the top ring.
Follow the orientation noted at the time of disassembly,
or use the instructions provided if installing a new ring
set.
NOTE:
If oil ring consists of two steel rails and a spring
expander, they must be installed by hand as follows:
• Grasp one end of lower steel rail and wind it over the
top ring groove, then into the center ring groove, and
finally into the oil ring groove.
• Install the spring expander on top of the lower rail, then
install the upper steel rail.
Install Piston and Connecting Rod
1. Thoroughly clean and oil cylinder bore and crankpin
journal.
2. Rotate crankshaft until crankpin journal is a bottom of
stroke.
3. Using Ring Compressor Tool #19070 or #19230,
install piston with notch or arrow (
A
, Figure 76) toward
flywheel side of engine, taking care not to damage
crankpin journal or connecting rod bearing.
Figure 76
4. Fit connecting rod bearing on crankpin journal, then
install rod cap with match marks aligned.
5. Cap should snap into position when assembled
correctly. Install rod screws and dipper.
6. Tighten screw closest to piston (
A
, Figure 77) first, then
screw farthest from piston (
B
) second. Torque screws
to values listed in
Engine Specifications
.
Figure 77
NOTE:
Failure to use a torque wrench can result in loose rods
causing breakage, or over-tightened rods causing scoring.
7. Rotate crankshaft two revolutions to ensure crankpin
and rod do not bind.
8. Move connecting rod sideways to ensure rod has
clearance on crankpin side.
Summary of Contents for 030430
Page 20: ...20 BRIGGSandSTRATTON COM Generator Wiring Diagram ...
Page 21: ...21 Generator Schematic ...
Page 22: ...22 BRIGGSandSTRATTON COM Notes ...
Page 58: ...58 BRIGGSandSTRATTON COM Main Unit ...
Page 76: ......