BRIGGS AND STRATTON VANGUARD OHV V-TWIN CYLINDER ENGINE SPECIFICATIONS

These Briggs and Stratton engines are used in various equipment, most common in lawnmowers, generators and other equipment. Here are the most common specifications for Vanguard OVH V-Twin engines. More guides and manuals on this website for Briggs and Stratton engines including complete service manuals, parts list, operator manuals, and repair articles.

BRIGGS AND STRATTON VANGUARD OHV V-TWIN CYLINDER ENGINE SPECIFICATIONS

COMMON SPECIFICATIONS – ALL MODELS

Spark Plug Gap… 030″ (0.76mm)

Valve Clearance (Cold)

Intake…………………..………….… .004″-.006″ (0.10 – 0.15mm)

Exhaust………………………………. .004″ – .006″ (0.10 – 0.15mm)

** Top Governed Speed: See B&S Service Engine Sales Manual MS-4052

1750 RPM

1100 RPM

.003″-.015″ (0.08 – 0.40mm)

Crankshaft End Play……………………………

**Governed Idle Speed

Spring # 805453 (red) Spring # 805454 (white)

Armature Air Gap… 008″-.012″ (0.20 – 0.30mm)

STANDARD AND REJECT DIMENSIONS – ALL MODELS

DESCRIPTION

STD. DIMENSIONS

REJECT DIMENSIONS

Cylinder

Bore

Model 290000 & 303000

Model 350000 & 351000

Model 380000 Out of round:

Main Bearing (Before 97050110)

(After 97043000)

Cam Bearing

68.0 – 68.03mm (2.677″-2.678″)

68.10mm (2.681″)

72.0 – 72.03mm (2.835″-2.836″)

72.16mm (2.839″)

75.50 – 75.52mm (2.9724″-2.973″)

75.59mm (2.976″)

30.03 – 30.06mm (1.1825″-1.1835″)

30.08mm (1.1845″)

35.02 – 35.06mm (1.379″-1.3805″)

35.12mm (1.383″)

16.0 -16.03mm (.630″-.631″)

16.08mm (.633″)

Cylinder Head

Valve Guide Valve Stem-Intake

-Exhaust

6.01 – 6.02mm (.2365″-.237″)

6.05mm (.238″)

5.95 – 5.96mm (.234″-.2346″)

5.92mm (.233″)

5.94 – 5.95mm (.2338″-.234″)

5.91mm (.2328″)

Crankcase Cover

Main Bearing

35.04 – 35.05mm (1.3795″-1.380″)

35.07mm (1.381″)

Cam Bearing

20.0 – 20.02mm (.7875″-.788″)

20.04mm (.789″)

Crankshaft

Crankpin

Mag Journal (Before 97050100)

(After 97043000)

PTO Journal

37.0 – 37.02mm (1.4565″-1.4575″)

36.95mm (1.455″)

29.98 – 30.0mm (1.180″-1.181″)

29.94mm (1.179″)

34.99 – 35.01mm (1.3776″-1.3784″)

34.95mm (1.376″)

34.96 – 34.97mm (1.3765″-1.377″)

34.92mm (1.375″)

Cam Shaft Mag Journal PTO Journal Lobes

Models 290000 – 351000 – Intake

– Exhaust

Model 380000 -Intake

-Exhaust

15.95 – 15.97mm (.628″-.6287″)

15.93mm (.6273″)

19.94 – 19.96mm (.7855″-.786″)

19.92mm (.7845″)

30.33 – 30.53mm (1.194″-1.202″)

30.25mm (1.191″)

30.33 – 30.53mm (1.194″-1.202″)

30.25mm (1.191″)

31.09 – 31.30mm (1.224″-1.232″)

31.06mm (1.223″)

30.33 – 30.53mm (1.194″-1.202″)

30.25mm (1.191″)

Connecting Rod

Crankpin Bearing ALL

37.06 – 37.08mm (1.459″-1.460″)

37.12mm (1.4615″)

Piston Pin Bearing

Models 290000 – 352000

17.09 – 17.1mm (.6728″-.6735″)

17.12mm (.674″)

Model 380000

18.04 – 18.05mm (.710″-.7105″)

18.06mm (.711″)

Piston Pin

Models 290000 – 352000

17.07 – 17.08mm (.6722″-.6725″)

17.06mm (.6718″)

Model 380000

18.00 – 18.01mm (.7085″-.709″)

17.98mm (.7078″)

Piston Pin Bearing (Piston)

Models 290000 – 352000

17.09 – 17.1mm (.6728″-.6735″)

17.12mm (.674″)

Model 380000

18.04 – 18.05mm (.710″-.7105″)

18.06mm (.711″)

Piston Rings

Ring End Gap – Top, Center & Oil Ring Side Clearance

Top & Center

Oil

0.20 – 0.40mm (.008″-.016″)

0.76mm (.030″)

0.045 – 0.076mm (.0018″-.003″)

0.11 – 0.15mm (.0045″-.006″)

0.10mm (.004″)

0.20mm (.008″)

COMMON TORQUE SPECIFICATIONS – ALL MODELS

11.0 Nm (100 in. Lbs.)

16.0 Nm (140 in. Lbs.)

23.0 Nm (200 in. Lbs.)

16.0 Nm (140 in. Lbs.)

6.0 Nm (50 in. Lbs.)

3.0 Nm (25 in. Lbs.)

2.0 Nm (20 in. Lbs.)

7.0 Nm (65 in. Lbs.)

7.0 Nm (65 in. Lbs.)

3.0 Nm (25 in. Lbs.)

7.0 Nm (65 in. Lbs.)

7.0 Nm (65 in. Lbs.)

3.0 Nm (25 in. Lbs.)

7.0 Nm (65 in. Lbs.)

13.0 Nm (115 in. Lbs.)

17.0 Nm (150 in. Lbs.)

19.0 Nm (165 in. Lbs.)

7.0 Nm (65 in. Lbs.)

17.0 Nm (150 in. Lbs.)

17.0 Nm (150 in. Lbs.)

175.0 Nm (125 ft. Lbs.)

16.0 Nm (140 in. Lbs.)

8.0 Nm (70 in. Lbs.)

16.0 Nm (140 in. Lbs.)

7.0 Nm (65 in. Lbs.)

7.0 Nm (65 in. Lbs.)

7.0 Nm (65 in. Lbs.)

Alternator (to cylinder)

Air Cleaner Base (to carburetor) Air Cleaner Support Bracket Armature

Back Plate Blower Housing Breather

Carburetor (to manifold) Connecting Rod Crankcase Cover Cylinder Head

Cylinder Shield Exhaust Manifold Fan Retainer Flywheel

Governor Control Bracket Governor Lever Nut Intake Manifold

Oil Pump

Rewind Starter (to blower housing) Rocker Arm Lock Nut

Rocker Arm Stud

Current Style Early Style

Spark Plug Starter Motor

Starter Motor Thru Bolts Valve Cover