Briggs & Stratton Vanguard 10V300 Repair Manual page 74

1. Apply a thin film of clean engine oil to MAG bearing
oil seal lip.
2. See Figure 90. Verify that governor cup (A) is
installed on governor gear shaft.
3. Rotate governor crank, so that paddle (B) is in
contact with governor cup.
4. Verify end play shims are installed on crankshaft, if
used.
5. Thoroughly lubricate crankshaft MAG bearing journal
and PTO bearing journal with clean engine oil.
6. Lubricate crank pin with General Lithium Grease.
7. Install oil seal protector sleeve over crankshaft taper.
NOTE: Use black electrical tape if oil seal protector
sleeve is not available.
8. Carefully install crankshaft into crankcase positioning
MAG bearing journal in MAG bearing.
90
7
68
BOTTOM END ASSEMBLY
91
9. Verify that crankshaft gear meshes with governor
gear.
10. Remove oil seal protector sleeve (or black electrical
tape) from crankshaft taper.
11. Verify that paddle of governor crank is still in contact
with governor cup.
12. Rotate crankshaft until crank pin journal is at the
bottom of its stroke.
13. Verify that piston ring end gaps are properly
staggered. See SECTION 6 - SERVICE ENGINE
SUBASSEMBLIES, PISTON AND CONNECTING
ROD, ASSEMBLY, step 12.
14. Obtain the Piston Ring Compressor (Part No.19070),
and proceed as follows:
The edges of the piston ring compressor are sharp.
Wear appropriate safety gloves and exercise care to
avoid hand injury.
CAUTION