B & S 6B - S 1955 oil & maintenance

[reynoldston]

I remember leaded gas as most of us older gentlemen would.
Lasted until the 80's. I remember the exhaust pipe turning gray inside after a long trip.

Seeing you remember the change over from leaded to non-leaded you must also remember the older cars you had to add a additive to the gasoline because the non-leaded ran hotter and the valves would burn on the pre-1980s if you didn't.

 

[silver1]

Seeing you remember the change over from leaded to non-leaded you must also remember the older cars you had to add a additive to the gasoline because the non-leaded ran hotter and the valves would burn on the pre-1980s if you didn't.

And when you re-built the heads you had to put in hardened seats.
I remember the 1st UNleaded cars were real dogs also.....all the 1974 on up.
I had a 1978 Camero with a 350 that was rated @ 145 HP.so sad:thumbdown:

 

[silver1]

6B, 60000 Series
Idle speed 1750
Armature air gap two leg .006-.010 three leg .012-.016
Valve clearance Intake .005-.007 Exhaust .009-.011
Valve guide reject gage 19122
Torque specifications Flywheel nut ft.lbs 55 Cylinder head in.lbs 140 Conn.rod in.lbs 100
Crankshaft reject size Mag journal .8720 Crankpin .8697 P.T.O journal .8726 Main bearing reject gage 19166 Cylinder bore std 2.375"
carburetor type Pulse-jet/vacu-jet turns open from seat needle valve 1.1/2

Remove head and cleaned it all up.
A little water in old oil. Drained as much as I could.
I'm going to get some Italian Olive Satin paint and start to put it back together.

 

[silver1]

6B, 60000 Series
Idle speed 1750
Armature air gap two leg .006-.010 three leg .012-.016
Valve clearance Intake .005-.007 Exhaust .009-.011
Valve guide reject gage 19122
Torque specifications Flywheel nut ft.lbs 55 Cylinder head in.lbs 140 Conn.rod in.lbs 100
Crankshaft reject size Mag journal .8720 Crankpin .8697 P.T.O journal .8726 Main bearing reject gage 19166 Cylinder bore std 2.375"
carburetor type Pulse-jet/vacu-jet turns open from seat needle valve 1.1/2

Where can find the Date Code? I think my 6B-S is after 6212310 because of the armature - mag has 4 screws holding it on.
Is it a 1955?

 

[EngineMan]

The engine model, type and serial number is stamped on the blower housing.

 

[silver1]

The engine model, type and serial number is stamped on the blower housing.

See picture of housing.....type is cut out! 6B-S Type? SN=661894

 

[EngineMan]

Why would anyone cut that out..?

6BS (horizontal shaft; suction carburetor) (1955-1958) from the info on briggs & stratton models.

 

[silver1]

Why would anyone cut that out..?

6BS (horizontal shaft; suction carburetor) (1955-1958) from the info on briggs & stratton models.

Well after more searching I found out that the mower is a California Trimmer HOMEOWNER.....made from 1968 to 2004.
So the motor is NOT original. The people @ Trimmer don't know the original horsepower of a 1968 (?) but they think it
was 5Hp. The motor color was red. I need a picture of a 1968.