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
