Crass Posted November 27 Posted November 27 The float valves on the BST38s ( and I presume others) have a sort of spring loaded plunger where the tang on the float actuates. When the manual says to measure float height with the float tang just contacting the valve am I correct in thinking that you need to support the float so that you can measure the height when it just touches this plunger? If you don't support the float it compresses the plunger and you're going to get another reading. Seems like a job for an octopus. Quote
Swiss Toni Posted November 27 Posted November 27 (edited) Nope. Turn the carbs on their side, float pivot uppermost. Angle carbs until float platform barely touching spring loaded peg. Measure from gasket face to top of float. Awkward, but not impossible. Edited November 27 by Swiss Toni 2 Quote
Crass Posted November 27 Author Posted November 27 Thanks. Was led up the garden path by some online videos showing the float left unsupported on the valve with the carbs upside down and chaps measuring like that. BST38s as well. Can't beat OSS know how. Quote
TonyGee Posted November 27 Posted November 27 as Toni said, about 45 degree's is about right. 1 Quote
Upshotknothole Posted November 27 Posted November 27 A bit of trial and error and you'll figure it out. You can get cheap float measuring tools off amazon and Eblag that help as well, most of them look like copies of the Factory Pro tool. I'll hold the carbs and the cage for the float tight with one hand and measure with the other while leaning them just enough to get them to close. 2 Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.