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Hi all
This looks straightforward, but there is a lot of play between the end part of the valve and the tang part. So, should there be play in this area? Because of this there is a massive difference in the position of the float if you set it as the valve closes, or if you move the float back until it opens again. Not a great explanation I know. Its a phbg16b. Thanks
Mark
Font Parallel Rectangle Drawing Engineering
 

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Hi Bill,
Yes there will inevitably be some play here. However, that is not important, because you are measuring the float height with the carb upside down. This means that gravity will eliminate the play in normal use.
When the carb is upside down ( ie when you are measuring the float height ) the float valve can fall into its hole before the float is in its fully ‘up’ position ( because of that play ). However, when the carb is the right way up, the valve will not shut early because gravity will hold the valve down against the float’s lever, meaning that it will only shut when the float reaches its full height.
It’s hard to describe without pictures or video, so I hope this makes sense.

Richard.
 
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