I display this Model B engine in original condition. It was purchased
from the original owner who used it for many different purposes. Briggs
and Stratton built these engines for industrial, farm and marine uses.
This engine has a rope starter, was built in 1943, is serial numbered
78418 and rated at 2 � hp.
In 1927 the Briggs and Stratton Company modified their FH style engine
to produce an industrial type heavy-duty engine with a larger oil sump
and more cooling capacity for special applications. To achieve this, a
second shroud was introduced and the fuel tank moved from the engine
base to the side of the shrouds similar to the larger model Q already
in production since 1925. Engine models FI and FG were the result of
these modifications. These two engines became the only double overhead
valve engines built by the company. This particular model FI engine was
well worn out when purchased and required an extensive restoration.
The engine has a foot pedal start mechanism utilizing a chain and
sprocket, was built in 1930, is serial numbered 12549 and rated at
The Model H engine was Briggs & Stratton’s third
L head style engine following the model L and Y. The L head engine placed the spark
plug on the side of the head instead of on top and the valves in the block
rather than on the head. They were produced for use on a large variety of
equipment including lawn mowers and washing machines. This engine has a spring
return lever start mechanism. It was built in 1935, is serial numbered 6805 and
is rated at 1 �.
The model P was Briggs and Stratton’s first stationary engine. The crankcase
casting was modified by the company from the Motor Wheel configuration, in
order to market a portable stationary engine for farm and garden equipment.
This particular engine was used on a Railway Jigger to replace the manual
mechanism. The drive side has a 6:1 reduction gear and is equipped with a
large sprocket for the chain drive. This rare engine was built in 1921, is
serial numbered 2526 and is rated at 1 HP.
In the late 1920s Briggs and Stratton realized the need to
build a larger engine with a higher power rating. The F series engines that
were currently being constructed were only rated at � to � hp. The company’s
result was the model Q. It turned out to be Briggs and Stratton’s first flat
head engine. As large as this engine is constructed, its power rating is still
only 1 � hp. This engine utilizes a rope start, is serial numbered 3303 and was
built in June 1928. It was originally used to operate an air compressor for
The WMB engine is an improved version of Briggs and Stratton’s WM design that was
specially built to meet the large demand for washing machines (WM) in rural
North America before electricity was installed on the farms. The improvements
to the ‘B’ version included having the spark plug located back on top of the
cylinder head and an improved governor vane. The WM engines were replaced on
washing machines by these engines starting in 1938. This engine has a foot
pedal start mechanism, was built in 1940, is serial numbered 135335 and rated
at 2/3 hp.
Briggs and Stratton produced the Model Z engines for heavy-duty applications to meet
the higher horsepower needs of the industry beginning in 1931. The 'L’ denotes
the block is made from aluminum to help reduce the overall engine weight.
These engines were commonly used to power lawn tractors, boats, and a variety
of farm equipment. The starter mechanism is spring-loaded and has a removable
crank handle. Cranking is aided by an engine compression release (lever on left
side), which opens the intake valve manually for easier starting. This engine
was built in 1936, is serial numbered 5239 and is rated at 4 HP.
This was my first engine restoration completed in 1975. The paintwork has not
been redone but remains as I first refinished it. The engine, which had not
seen much use, had been completely stripped down and given to me in a bushel
basket along with the frame. All the pieces were still there and, after
rebuilding and painting, it started on the third pull. For some reason I still
remember that fact after 25 years. There was no makers name on the bike