Adjustment prevention mechanism for carburetor

Abstract From the Canadian patent

Abstract of the Disclosure, An adjustment prevention mechanism for a carburetor comprises a fixed covering member disposed opposite the head of an adjusting screw for adjusting the fuel flowing through a slow speed fuel passage during idling of an engine. The covering member is secured to structure forming part of or housing an engine, for example to the suction pipe of the engine, and has a hole through which the adjusting screw can be adjusted. A cap-shaped plug is inserted rigidly into this hole to block the hole after the adjusting screw has been adjusted. As a result the adjusting screw cannot be readjusted by a user.