(57) A maximum speed control device for limiting the top speed of a internal combustion
engine, comprising means (21) for supplying fuel to the engine, a throttle control
(20) linked to the fuel supply means (21) by a cable (18), means (1) for monitoring
the speed of the engine, means (3) for providing an output when the speed of the engine
exceeds a predetermined limit, and means for automatically reducing the supply of
fuel to the engine in response to said output. The means for automatically reducing
the supply of fuel to the engine comprises means (11, 13 and 16) for increasing the
effective length of the throttle cable (18) in response to said output, thereby reducing
the supply of fuel, until such time as the engine speed falls below the said predetermined
limit and said output ceases.
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