Carburetor needle valve adjustment limiter cap and method of use

Details Carburetor needle valve adjustment limiter cap and method of use Carburetor needle valve adjustment limiter cap and method of use

1993-08-13

1994-06-21

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Valved

261DIG38, 261DIG84, 137382, F02M 308

Patent

active

053226453

ABSTRACT:
A cap and method for limiting the range of adjustment of a fuel flow metering valve in a carburetor. The cap has a body with an arm projecting generally radially outwardly therefrom to abut against a stop carried by the carburetor to limit valve rotation and a passage therein for telescopically axially receiving the head end of a shank of the valve. Portions within the passage enable the cap to be retained in the shank of the valve in a freely rotating first position during assembly and arm orientation, and in a second position securing the cap to the valve to limit adjustment and maintain emissions calibration. Preferably, the cap may also be moved to a third position to releasably drivingly engage the valve to perform fuel flow adjustment before securing the cap to the valve. The cap can also be prepositioned angularly relative to an adjusted position of the valve before it is moved to its second position on the valve to limit the extent of subsequent adjustment of the valve.

REFERENCES:
patent: 3618906 (1971-11-01), Charron
patent: 4097561 (1978-06-01), Seki et al.
patent: 4242290 (1980-12-01), Handelsman et al.
patent: 4271095 (1981-06-01), Maeda
patent: 4283353 (1981-08-01), Miller
patent: 4333891 (1982-06-01), Miller
patent: 5055238 (1991-10-01), Araki

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