71XS1B Carburetor Bowl Screws01 Original M4 x 0.7 threads.
71 BS38 Throttle Bushings07 A bag of M8-10-10 teflon lined split bronze steel backed bushings. 2 bushings have been trimmed to 8mm length. Old bush
71XS1B Carburetor Diaphragms 45 year old diaphragms in foreground. New JBMindustries diaphragms mounted to slides. Install with warm soapy water.
71XS1B Carburetor Bowl Screws Stripped thread renewed with #8-36 threads.
71XS1B Carburetor Bowl Screws01 Original M4 x 0.7 threads.
71XS1B Carburetor Bowl Screws Stock screws are M4 x 0.7 - 12mm A #8-36 screw is about 0.007" larger in diameter and has nearly the same thread pitch
71XS1B Carbs Seals06 Adapter rings allow use of regular throttle shaft seals 11.5 x 12 x 3
MikesXS Throttle Screws Modified. Countersink face recut from 80° to 92°. Shortened from 8mm to 6.5mm. Ends center drilled to 1.2mm, for staking
TwoManyXS1Bs

71XS1B Carburetor Bowl Screws01 Original M4 x 0.7 threads.

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1971 XS1B BS38 carburetor rebuild
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