Simondo
Here For The Long Haul!
Sometime there are different pump diaphragms in carb kits. What they are made of "May" influence what you put in your carb. We often do not see the OEM fitted one so this picture might be a help.
I have often found (not always) the blue/clear /shiny black one in a Zama /Walbro and swapped out to a rubberized or teflon one if using a non genuine kit.
Edit: for clarification ....
This picture i have found out has connection to the world of model planes and as such the comment about "Over Pumping " may be more of a issue in that situation. The rest has more relevance to the OPE world and the fuel used around the globe.
I have often found (not always) the blue/clear /shiny black one in a Zama /Walbro and swapped out to a rubberized or teflon one if using a non genuine kit.
Edit: for clarification ....
This picture i have found out has connection to the world of model planes and as such the comment about "Over Pumping " may be more of a issue in that situation. The rest has more relevance to the OPE world and the fuel used around the globe.
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