"Tecumseh" engine code decipher list.
V = Vertical Shaft
LAV = Lightweight Aluminum Vertical {engine}
VM = Vertical Medium Frame {engine}
TVM = Tecumseh Vertical {medium frame}
VH = Vertical Heavy Duty {cast iron}
TVS = Tecumseh Vertical Shaft
TNT = Toro N' Tecumseh
ECV = Exclusive Craftsman Vertical
OVM = Overhead Valve vertical Medium Frame {engine}
H = Horizontal Shaft
HS = Horizontal Small Frame {engine}
HM = Horizontal Medium Frame {engine}
HM = Horizontal Heavy Duty {cast iron} Medium Frame {engine}
HH = Horizontal Heavy Duty {cast iron}
ECH = Exclusive Craftsman Horizontal
An Example is: TVS90-43056A serial #8310C
TVS = Tecumseh Vertical Shaft
90 = 9 Cubic Inch Displacement
43056A = Specific number for parts identification
8310C = Serial number
8 = Year of manufacturing {1978}
310 = Calendar day of the year {310th day in year of 1978}
C = Assembly line and shift when the engine was built.
SBH = Short Block Horizontal
SBV = Short Block Vertical
OH = Overhead Valve Heavy Duty {cast iron}
Examples: OH160...OH120
Overhead Valve 160 equals 16 horsepower
Overhead Valve 120 equals 12 horsepower
Recommended oil viscosities for Aluminum Engines:
Above 32 degrees: 30 weight or 10W30 or 10W40
Below 32 degrees: 5W30
Below 0 degrees: 5W30 or 10W
Recommended oil viscosities for Cast Iron Engines:
Above 32 degrees: 30
Below 32 degrees: 10W
Spark Plug Gap: .030 inch
Older model engines using points and condensers:
Ignition Point Gap: .020 inch
Valve Clearance: .010 both intake and exhaust
Web Site: http://www.Tecumseh.com
==============================================
"Briggs and Stratton" engine code decipher list.
The first one or two digits indicate the
"Cubic Inch Displacement"
The first digit after the displacement indicates:
"Basic Design Series"
The second digit after the displacement indicates:
"Position Of Crankshaft and Type of Carburetor."
The third digit indicates:
"Type of Bearings" and whether the engine has a "Reduction Gear" or an "Auxiliary Drive."
The last digit indicates: the "Type of Starter."
Cubic Inch Displacements are listed between 6 to 42.
Basic design series {first digit after displacement} are listed between 0 to 9.
Second digit after the displacement is listed 0 to 9:
Crankshaft, Carburetor and Governor types:
0 = Horizontal Diaphragm
1 = Horizontal Vacu-Jet
2 = Horizontal Pulsa-Jet
3 = Horizontal Flo- Jet with Pneumatic Governor
4 = Horizontal Flo-Jet with Mechanical Governor
5 = Vertical
6 = Left Blank...{No Listing Indicated in service manual}
7 = Vertical Flo-Jet
8 = Left Blank...{No Listing Indicated in service manual}
9 = Vertical Pulsa-Jet
Third digit after displacement:
Bearings, Reduction Gears and Auxiliary Drives types:
0 = Plain Bearing
1 = Flange Mounting Plain Bearing
2 = Replacement Bearing
3 = Flange Mounting Ball Bearing
4 = Left Blank...{No Listing in this service manual}
5 = Gear Reduction of 6 to 1
6 = Gear Reduction of 6 to 1 with Reverse Rotation
7 = Left Blank...{No Listing in this service manual}
8 = Auxiliary Drive Perpendicular to Crankshaft
9 = Auxiliary Drive Parallel to Crankshaft
Fourth Digit After Displacement:
Type Of Starter Used:
0 = Without Starter
1 = Rope Starter
2 = Rewind Starter
3 = Electric Starter 120 Volt Gear Drive
4 = Electric Starter with generator 12 Volt with Belt Drive
5 = Electric Starter Only 12 Volt Gear Drive
6 = Alternator Only*
7 = Electric Starter 6 or 12 Volt W/Gear Drive & Alternator
8 = Vertical Pull Starter
* Digit 6 was used for the currently obsolete
"Wind Up Starters."
Starter Position:
V = Vertical Pull Starter
Oil Fill and Drain:
CS = Carb Side
OC = Opposite Carburetor
D = Dual Side
Governor Types:
AV = Air Vane
M = Mechanical
Controls:
MF = Manual Friction
R = Remote
AG = adjustable for a constant speed of operation {RPM}
I/C Series means Industrial/Commercial applications.
Oil Capacities for Aluminum Engines:
6, 8, 9, 11 cubic inch Vertical Crankshaft:1 and a 1/4 pints
6, 8, 9 cubic inch Horizontal Crankshaft: 1 and a 1/4 pints
10, 13 cubic inch Vertical Crankshaft: 1 and 3/4 pints
10, 13, cubic inch Horizontal Crankshaft: 1 and a 1/4 pints
14, 17, 19 cubic inch Vertical Crankshaft: 2 and a 1/4 pints
14, 17, 19 cubic inch Horizontal Crankshaft: 2 and 3/4 pints
22, 25 cubic inch Vertical & Horizontal Crankshafts: 3 pints
Oil Capacities for Cast iron Engines:
9, 14, 19, 20 cubic inch Horizontal Crankshaft engines:
3 pints
23, 24, 30, 32 cubic inch Horizontal Crankshaft engines:
4 pints
Oil SAE Viscosity Grades: {OEM Suggested}
-20 Degrees to 20 Degrees *5W-20 or 5W-30
0 Degrees to 60 Degrees 10W-30 or 10W-40
40 Degrees to 100 Degrees 30 weight or 10W-30 or 10W-40
* Synthetic oil may be used: 5W-20, 5W-30 or 5W-40
OEM suggested oil change intervals for ALL engines is
25 hours.
OEM suggested air filter replacement intervals is
25 hours.
ALL spark plug gaps are .030
Crankshaft End Play for ALL models is: .002-.008 thousands.
Older model engines using points and condensers:
Condenser capacity for ALL models is: .18 to .24 MFD
ALL models have an ignition point gap of .020
Valve Clearances:
All Aluminum Cylinder Engines:
6B, 60000, 8B 80000 to 250000
Intake Minimum .005
Intake Maximum .007
Exhaust Minimum .009
Exhaust Maximum .011
All Cast Iron Cylinder Engines:
5, 6, 8, N, 9, 14, 19, 190000, 20000
Intake Minimum .007
Intake Maximum .009
Exhaust Minimum .014
Exhaust Maximum .016
23, 230000, 240000, 300000, 320000
Intake Minimum .007
Intake Maximum .009
Exhaust Minimum .017
Exhaust Maximum .019
Web site: http://www.briggs&stratton.com
TS = Toms Suggestion...
P&S = Print and Save...
Regards & Good Luck. Sharp Advice.
Master Small Engine Tech. Web Site Host, Forums Manager, Monitor and Multiple Topics Moderator. "Accurate Power Equipment Company." Small Engine Diagnostics Services & Repair.
Fast...Fair...Friendly & Highly Proficient Services...
