First Farmall

Thanks for any help, DRD

1. I use D21's in mine, but it depends on whether you are going to really work it or parade it. I don't use mine too hard, therefore, the D21's.

2. Nope, they're different.

3. The Farmall emblem was used on the H's and the IH emblem was used on the super H's. This should have been around 1953.

4. Originally it was a 6 volt positive ground. Who knows what changes have been made over the years.

5. Sorry, no clue.

6. Off, Dim and Bright.

Hope this helps some. Larry

I'm not sure what numbers you found. The serial number for an H should start with the letters FBK and the super H would start with SH. The serial number should be on an aluminum plate riveted on the left side of the bell housing. The valid suffixes for the H and M series are below:

X 1 Gasoline
X 1 A Gasoline – Low Speed Gears
X 1 B Gasoline – 5000 ft. Altitude
X 1 C Gasoline – 8000 ft. Altitude
X 1 E Gasoline – 5000 ft. Altitude – Low Speed Gears
X 1 F Gasoline – High Speed Gears
X 1 G Gasoline – High Speed Gears – Low Speed Gears
X 1 H Gasoline – High Speed Gears – 8000 ft. Altitude
X 1 J Gasoline – 7 m.p.h. High Speed Gears – 5000 ft. Altitude
X 1 L Gasoline – 5000 ft. Altitude – 7 m.p.h. 4th Speed – Low Low Speed
X 1 M Gasoline – 8000 ft. Altitude – Low Low Speed
X 1 N Gasoline – 8000 ft. Altitude – Low Low Speed – 7 m.p.h. 4th Speed

X 2 Modified

X 3 Kerosene
X 3 A Kerosene – Low Speed Gears
X 3 B Kerosene – 5000 ft. Altitude
X 3 C Kerosene – 8000 ft. Altitude
X 3 D Kerosene – High Speed Gears
X 3 G Kerosene – 7 m.p.h. High Speed Gears – 5000 ft. Altitude
X 3 H Kerosene – 7 m.p.h. Low Low Speed

X 4 Shop Mule

X 5 5000 ft. Altitude
X 5 A 5000 ft. Altitude – 7 m.p.h. 4th Speed

X 6 Low Speed Gears
X 6 A Low Speed Gears – Starting or Lighting
X 6 B Low Speed Gears – High Speed Gears
X 6 C Low Speed Gears – 5000 ft. Altitude

X 8 8000 ft. Altitude

X 9 High Speed Gears

X 10 10,000 ft. Altitude

X 11 Engines with Undersize Crankshaft
X 11 S Engines with Undersize Crankshaft (Service)

X 14 Starting or Lighting
X 14 A Battery Ignition with Starting or Lighting and Adjustable Front Axle

X 16 Over-Center Hand Operated Clutch

X 17 Distillate
X 17 A Distillate – 5000 ft. Altitude
X 17 D Distillate – 8000 ft. Altitude

X 18 Unlisted Feature
X 19 Special Transmission

X 20 Cotton Harvester
X 20 A Cotton Harvester – Gasoline
X 20 B Cotton Harvester – Kerosene
X 20 C Cotton Harvester – Diesel
X 20 D Cotton Harvester – Gasoline – Low Low Speed
X 20 E Cotton Harvester – Distillate – 5000 ft. Altitude
X 20 F Cotton Harvester – Gasoline – 5000 ft. Altitude Pistons

X 21 7 m.p.h. Transmission – 8000 ft. Altitude
X 22 Adjustable Front Axle (Heavy Duty)
X 22 A Adjustable Front Axle

X 23 Auburn Clutch
X 24 Nonadjustable Front Axle

Hope this helps.
Larry

I would double-check on the serial number. If the prefix is FBH then you have an H. If the prefix is SH then you have a Super H.