| Also known as | P29 4MMX0.5, p29 4mmx0.5 |
| Listed in parts books | Not catalogued by year yet |
THROTTLE STOP SCW 26/30 B
A throttle stop screw for the 26/30 B carburetor, setting the idle position of the throttle slide.
P29A is a throttle stop screw, listed in the parts records as fitting the 26/30 B carburetor. This is the small screw that sets the closed position of the throttle slide, giving the engine an idle to sit at rather than dropping to nothing when you let off the twistgrip.
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Our record on this one is brief and doesn't tie it to a specific model or year. The alias shown alongside it, P29 4MMX0.5, points to a 4mm thread with a 0.5mm pitch, which lines up with the small-carb screw sizing on this family of Amal-type instruments.
If you're chasing one down for a rebuild, check it against the carb body you've got on the bench before ordering, since we don't have enough here to confirm it against a particular machine.
Sorry if we got something wrong here. If you think this information isn't correct, .