Briggs & Stratton Vanguard 10V300, Repair Manual

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102
Standard/Reject Sizes
ITEM STANDARD SIZE REJECT SIZE
CRANKCASE/CYLINDER
Cylinder Bore Diameter
10V300
2.441 in (68 mm) 2.444 in (62.0875 mm) or more
12V300 2.677 in (68 mm) 2.681 in (68.0875 mm) or more
Camshaft Bearing Bore Diameter 0.552 in (14.009 mm) 0.554 in (14.068 mm) or more
Cylinder Bore Out-Of-Round 0.002 in (0.05 mm) 0.0015 in (0.04 mm) or more
CYLINDER HEAD
Intake
Valve Seat Angle 45°
Valve Stem Diameter 0.216 in (5.475 mm) 0.209 in (5.319 mm) or less
Valve Guide Bore Diameter 0.217 in (5.506 mm) 0.220 in (5.592 mm) or more
Exhaust
Valve Seat Angle 45°
Valve Stem Diameter 0.214 in (5.434 mm) 0.208 in (5.278 mm) or less
Valve Guide Bore Diameter 0.217 in (5.506 mm) 0.220 in (5.592 mm) or more
CRANKCASE COVER
Camshaft Bearing Bore Diameter 0.552 in (14.009 mm) 0.554 in (14.068 mm) or more
CRANKSHAFT
Crank Pin Journal Diameter 1.102 in (27.983 mm) 1.099 in (27.925 mm) or less
MAG Bearing Journal Diameter 0.984 in (24.982 mm) 0.981 in (24.925 mm) or less
PTO Bearing Journal Diameter 0.984 in (24.982 mm) 0.981 in (24.923 mm) or less
CAMSHAFT
MAG Bearing Journal Diameter 0.550 in (13.975 mm) 0.548 in (13.916 mm) or less
PTO Bearing Journal Diameter 0.550 in (13.975 mm) 0.548 in (13.916 mm) or less
CONNECTING ROD
Crank Pin Bearing Bore Diameter 1.103 in (28.024 mm) 1.106 in (28.081 mm) or more
Piston Pin Bearing Bore Diameter 0.572 in (14.516 mm) 0.574 in (14.573 mm) or more
PISTON
Piston Pin Diameter 0.571 in (14.50 mm) 0.570 in (14.467 mm) or less
Piston Pin Bore Diameter 0.572 in (14.52 mm) 0.574 in (14.576 mm) or more
Top Compression Ring End Gap 0.006 in (0.15 mm) 0.039 in (0.99 mm) or more
Middle Oil Wiper Ring End Gap 0.032 in (0.80 mm) 0.065 in (1.66 mm) or more
Bottom Oil Control Ring End Gap 0.030 in (0.75 mm) 0.074 in (1.89 mm) or more
Top Compression Ring Side Clearance ** 0.002 in (0.05 mm) 0.010 in (0.25 mm) or more
** Only top ring side clearance needs to be checked.
Not for
Reproduction