Briggs & Stratton Vanguard 540000 Series Advance Product Service Information
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Briggs & Stratton Vanguard 540000 Series Advance Product Service Information

Briggs & Stratton Vanguard 540000 Series Advance Product Service Information

31 hp air cooled v-twin engine
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INFORMATION BULLETIN NO. 42
SUBJECT: 31 HP Air Cooled V-Twin Engine
Introducing the new Briggs & Stratton Vanguardt 31 HP, V-Twin OHV Engine, Model Series 540000. This is the
largest 2-cylinder air cooled engine Briggs & Stratton has ever produced, delivering horsepower and torque numbers
rivaling the best 2-cylinder liquid cooled engines but in a lighter, less expensive, easier to maintain package. It
features full pressure lubrication, a Donaldson 2 Stage Cyclonic air cleaner, a Super Lo-Tone muffler system, and
the new Advanced Debris Management Systemt. A full two year commercial-use warranty applies. The following
preliminary service specifications are subject to change.
Vanguard Model Series 540000
Air Cleaner Type
Alternator Output &Type
Armature Air Gap
Bore
Bore Type
Compression Ratio
Crankshaft End Play
Displacement
Fuel Filter Type
Governor System
Lubrication System
Maximum Horsepower @ 3600 PRM
Maximum Torque @ 2400 RPM
Muffler System
Oil Capacity - with Filter
Oil Capacity - without Filter
Oil Fill Style
Spark Plug Gap
Stroke
Timing Setting
Valve Clearance (Cold) - Int. and Exh.
ADVANCE PRODUCT

SERVICE INFORMATION

Air Filter - Primary (Outer)
Air Filter - Safety (Inner)
Fuel Filter
Fuel Stabilizer (4.2 oz.)
Oil - 4-Cycle 30W (48 oz.)
Oil - 4-Cycle 5W-30 Synthetic (32 oz.)
Oil Filter
Oil Pump Kit (Removes Oil From Engine)
Spark Plug
Spark Plug Wrench
Spark Tester

Common Specifications

DATE: 7-03-2003
FILE IN: 272144

Common Maintenance Parts

2 Stage Cyclonic
20 Amp - Regulated
0.005 - 0.007" (0.13 - 0.18 mm)
3.366" (85.5 mm)
Cast Iron Sleeve
8.25:1
.002 - .012" (.05 - .30 mm)
54 ci. (895 cc)
Spin-On Cartridge
Mechanical
Full Pressure
31
47 ft-lbs.
5" Round - Single Outlet
79 oz. (2.3 L)
71 oz. (2.1 L)
In Valve Cover
0.020" (0.51 mm)
3.071" (78.0 mm)
23° BTDC
0.004 - 0.006" (0.10 - 0.15 mm)
809670
821136
691035 or 5065D
100002 or 5041D
100028
100074
492932s or 5049D
5056D
692051
89838 or 5067D
19368

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Summary of Contents for Briggs & Stratton Vanguard 540000 Series

  • Page 1: Service Information

    ADVANCE PRODUCT SERVICE INFORMATION INFORMATION BULLETIN NO. 42 DATE: 7-03-2003 SUBJECT: 31 HP Air Cooled V-Twin Engine FILE IN: 272144 Introducing the new Briggs & Stratton Vanguardt 31 HP, V-Twin OHV Engine, Model Series 540000. This is the largest 2-cylinder air cooled engine Briggs & Stratton has ever produced, delivering horsepower and torque numbers rivaling the best 2-cylinder liquid cooled engines but in a lighter, less expensive, easier to maintain package.
  • Page 2 Fastener Specifications Description Wrench/Socket Size Torque Air Cleaner Mounting 12 mm 90 in-lbs (10 Nm) Air Guide Mounting Screws 10 mm 90 in-lbs (10 Nm) Air Block Plate Mounting Screws Phillips 30 in-lbs (3 Nm) Alternator Harness Clamp Screw 10 mm 90 in-lbs (10 Nm) Backplate Mounting Screws 10 mm...

  • Page 3: Standard And Reject Dimensions

    Standard and Reject Dimensions Description Standard Dimension Reject Dimension Cylinder Piston Bore 3.366” (85.50 mm) 3.369” (85.57 mm) Out-of-Round .0015” (.04 mm) Mag Bearing 1.775” (45.09 mm) 1.7765” (45.12 mm) Cam Bearing .788” (20.02 mm) .790” (20.07 mm) Cylinder Head Valve Seat Angle (Intake and Exhaust) 45°...
  • Page 4 Air Cooling System Maintenance WARNING AVOID EYE INJURY! SWear eye protection whenever using compressed air to clean the engine. This engine has the Advanced Debris Management Systemt that reduces chaf buildup by using the rotating screen to cut airborne debris into small pieces that are easily passed through the cooling system. The Easy Clean Accesst allows you to clean the cooling fins without having to remove the blower housing.

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