Piston And Connecting Rod Reassembly - Tecumseh SPECTRA 37 Service And Repair Manual

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e) PISTON AND CONNECTING ROD (FIG 49)
Fit conrod to piston by first fitting one retainer ring,
lubricate conrod and secure with piston pin (Fig 51). Fit
second retaining ring, if rings have been renewed rub
cylinder wall with fine emery to remove "glaze" and assist
the bedding of the rings.
Some pistons have match marks (A, Fig 50) and must be
fitted so that match marks are toward magneto side (LAV
172, HBP 40).
Insert piston from top of bore with conrod match marks to
open side of crankcase.
The piston match mark will then appear on the opposite
side to those on the conrod (Fig 50-B).
Insert piston into bore from top, lubricate and enter rings
with the aid of a ring compressor tool, push home until
big end seats on crankshaft journal, lubricate well and fit
big end cap (and dipper on horizontal shaft engines).
The cap and rod are marked for correct assembly.
(A - Fig 52). These must be matched correctly.
For correct assembly, operate as follows:
- Locate conrod on crankshaft journal
- Align match marks and fit cap
- Fit lock tab and insert screws
- Hand tighten the two screws
- Screws should then be tightened by means of torque
wrench to figures in table following the sequence shown
on Fig 53.
- Secure screws with lock tab already fitted (Fig 54).
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Fig. 49
Fig. 50
Fig. 51
Fig. 52