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View Full Version : Ive done something very wrong to my Accelerator Pump and now need help



jedwards
24th March 2023, 06:34 PM
I decided to overhaul the Carburettor from my 1953 S1 80".
Simple right?

Well I've done something to the accelerator pump, (no idea what) and I'm completely at loss of what I've done wrong.


The Accelerator pump body with the diaphragms and internal springs operates the pump by pulling the Accelerator pump's "arm" inwards towards the carburettor body (Image 2) . The internal springs push it back out again when at rest. (image 1)
HOWEVER, somehow, I have it so that the accelerator acts to rotate the butterfly outwards, away from the carburettor body. The cam on the throttle shaft rotates to PUSH the Accelerator pump's activation outwards, which just compresss the spring as the accelerator arm is hard against its stop. (image 3)

What on Earth have I done wrong?

Many thanks for any advice and help
regards
Jeff in Perth, Western Australia

JDNSW
24th March 2023, 07:25 PM
I don't have a Series 1 manual,but assuming the setup is the same as the Series 2 Solex -

1. The fitting on the throttle shaftneed to be taken off and put back on rotated 180 degrees so it is above the shaft

2.There should be a split pin and washers on the other side of the pump arm. Washers are inserted to give 0.5mm free play when the idling speed screw is completely unscrewed. This ensures no free play in the pump operation.

Hope this helps.

1950landy
24th March 2023, 10:19 PM
Not sure if this is of any help.184558 184559

whitehillbilly64
25th March 2023, 07:24 AM
SOLEX 32 PBI-2 - www.landseriesparadise.com (https://www.landseriesparadise.com/448237098)

Full page fax print (lrsoc.com) (https://www.lrsoc.com/forum/forum_files/Solexarticle.pdf)

Full page photo (lrsoc.com) (https://www.lrsoc.com/forum/forum_files/Solex%2032%20PBI%202.pdf)


whitehillbilly

cjc_td5
25th March 2023, 10:56 AM
Do these help?https://uploads.tapatalk-cdn.com/20230325/365b3a9f2c153f887c0e7bd888477ad6.jpghttps://uploads.tapatalk-cdn.com/20230325/8b8accfeb28f2a2ea2b7e0341656568b.jpg