Crankshaft; Piston, Rings And Connecting Rod; Disassembly And Inspection - Briggs & Stratton 272147 Repair Manual

Check PTO Bearing
Check PTO bearing for wear or damage, Fig. 70.
Reject Dimension: 1.7765" (45.12 mm)
If PTO bearing is worn or damaged, the crankcase cover
must be replaced.
Fig. 70

CRANKSHAFT

Check Crankshaft
Inspect crankshaft threads and keyways for damage or
wear. If threads or keyways are damaged or worn,
replace crankshaft. Check journals for scoring and wear,
Fig. 71.
If journals are scored or worn, replace crankshaft.
Crankshaft Reject Sizes:
PTO Journal: 1.7695" (44.94 mm)
Mag Journal: 1.7695" (44.94 mm)
Crankpin Journal: 1.6525" (41.97 mm)
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TM
Vanguard Twin-Cylinder OHV Liquid-Cooled Engine
Fig. 71
Check Camshaft
Inspect gear teeth, lobes and journals for wear and
nicks. Camshaft journal and lobe reject sizes are shown
below. Replace cam gear if not to specification.
Camshaft Reject Sizes:
Journals: (Mag & PTO) .7845" (19.93 mm)
Lobes: (Int. & Ex.) 1.342" (34.08 mm)
Fig. 72

PISTON, RINGS AND CONNECTING ROD

DISASSEMBLY AND INSPECTION

Measure cylinder bores before checking pistons and
rings If cylinder bore(s) require re-sizing it will not be
Section 4 - Engine Overhaul