272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

3. Align timing marks on camshaft and crankshaft
timing gear. Install camshaft, Fig. 5.
4. Assemble governor spool (2) to camshaft
(except Models 540000, 610000).
a. Install new O-ring (3) in cylinder.
b. Make sure that spool engages flyweights
and slot on spool fits over locating pin (1).
Fig. 7
Install Crankcase Cover or Sump
1. Lubricate PTO and camshaft bearing.
2. Rotate governor shaft so that paddle rests
against camshaft bearing support, Fig. 8.
3. Insert proper seal protector through oil seal.
Fig. 5
Install Oil Pump
Horizontal Crankshaft
1. Install a new O-ring (5) to the pickup tube and
screen assembly (4). Install the pickup tube
assembly to the oil pump (2), Fig. 6.
2. Install oil pump assembly and gear baffle (1), to
crankcase. Use new O-rings (3) under the
screws.
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Fig. 8
4. Install crankcase cover or sump with new gasket.
Torque screws in sequence, Fig. 9, to 150
in. lbs. (17 Nm).
NOTE: Models 540000, 610000 – 200 in. lbs.
(23 Nm).
Vertical Crankshaft
Fig. 6
1. Make sure the oil pickup screen (3) is clean and
in position.
2. Place new O-rings (1) on the screws (2). Install
to sump, Fig. 7.
Fig. 9
5. Check crankshaft end play. End play should be
0.003 – 0.015” (0.08 – 0.40 mm).
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