Oversight of Bungartz walk behind tractors -- H4 series, built from 1953 till 1956 by Bungartz in München, Germany
Bungartz H4, first series, 500 machines built during 1953 and 1954 (serial nrs. 1 - 500). Power source was either a TWN (=German Triumph) GeMo 200 or GeMo 201B, the latter having a governor driven by the amount of air sucked into the carburettor. Both 5 hp two stroke petrol engines.
Bungartz H4, second series, 25 machines built during 1954 (serial nrs. 501 - 525). Sachs Stamo 200 engine, 5 hp two stroke petrol without a governor. I had one of these in my collection, and know of one more in southern Netherlands, as well as one located at a collector in Austria. This model can be determined by the distinct, bulb-type air inlet to the carburettor.
Bungartz H4, third series, 775 machines built during 1954 and 1955 (serial nrs. 526 - 1300). The Sachs Stamo 200 engine was the first which was standard fitted with a governor, which all later models featured as well. The folder mentions that the fenders and lamps are not standard included, but the same applied for the trailer, vegetables and driver ...
Bungartz H4, fourth series, at least 655 machines built in 1956 (serial nrs. 1301 - ? (highest known nr. 1955)). First H4 fitted with the wider quick-action coupling for attachments, which was also used on all later models of this size (H5, FRN, FRK, FRNK, FK, F6).
| Series of the Bungartz H4 |
| series |
model |
serial numbers |
years |
engine |
characteristics |
| 1 |
H4 |
1 - 500 |
1953-1954 |
TWN GeMo 201 (B), 5 hp 2-stroke petrol |
- wheel flanges like on Bungartz H3
- single worm in gearbox
- no crown nut below clutch -> 2F + 1R speeds
- clutch lever pulled upward
- narrow quick action coupling
- old model handlebar adjustment
- clutch in gearbox oil
- optional planetary reduction on wheel axle -> 4F + 2R |
| 2 |
H4 |
501 - 525 |
1954 |
Sachs Stamo 200, 5 hp 2-stroke petrol |
- wheel flanges like on Bungartz H3
- no crown nut below clutch -> 2F + 1R speeds (optional planetary reduction on wheel axle?)
- clutch lever pulled upward
- narrow quick action coupling
- old model handlebar adjustment
- clutch in gearbox oil |
| 3 |
H4 |
526 - 1300 |
1954 & 1955 |
Sachs Stamo 200FL, 5 hp 2-stroke petrol |
- wheel flanges with aluminium ring (1x M10 bolt in center)
- no crown nut below clutch, optional support fitted by transverse bolt
- single or double worm gear => 2F + 1R or 4F + 2R
- clutch lever pulled upward
- narrow quick action coupling
- hi-low control handle with hand-pulled lock
- old model handlebar adjustment
- clutch in gearbox oil |
| 4 |
H4 & FRN |
H4 nr. 1301 - ? (2075)
FRN nr. 14101 - 19000 |
1955 - 1956 |
H4: Sachs Stamo 200FL.
FRN: Sachs Stamo 280FL, 6-7 hp 2-stroke petrol |
- wheel flanges with aluminium ring (1x M10 bolt in center)
- no crown nut below clutch (2 forward speeds), optional support fitted by transverse bolt
- single or double worm gear => 2F + 1R or 4F + 2R
- clutch lever pulled upward
- wide quick action coupling
- hi-low control handle with automatic locking plate
- old model handlebar adjustment
- clutch in gearbox oil |
Continued on Bungartz FRN / K and H5 models page.
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