Service Manual
9-11
Table of Contents
Reassembly
Twin Cylinder Engine Service Manual
February 2017 - Digital Edition
ENGINE ASSEMBLY
Assemble Lower End (Cont.)
Piston and Connecting Rod Assemblies onto Crankshaft
1. Remove rod cap if not previously removed.
2. Oil the piston and rings.
3. Using a ring compressor, insert the piston assembly into the matching cylinder with the piston dome “PTO”
mark pointing toward PTO end of the crankshaft (#1 piston assembly in the #1 bore, #2 piston assembly in #2
bore).
4. Push piston into the bore until the rod is at the crank journal.
5. Match the rod cap stamping to rod and install with two bolts.
6. Torque to specication, connecting rod bolts 106 in-lbs. (12 Nm).
7. Verify crankshaft moves freely.
8. Repeat for other piston and rod assembly.
NOTE: When the rods are properly assembled to the crank the tapers will be to the upper and lower crank
thrust sides and both piston dome stamps point to the PTO end of crankshaft (Figure 11).
9. Verify crankshaft moves freely.
Figure 11
Triangle mark on the
piston should point to
the crankcase cover.