My Scullly oil gauge doesn't work anymore, it's attached to a Ventalarm gauge
type VGA, I can unscrew the top plastic gauge and I can pull the inside metal
pole up and down with some resistance but it just returns to empty when the
gauge is back on even when the tank is full. I looked at replacement parts
and it looks like the entire top Ventalarm gauge that also houses the intake
pipe has to be removed, I was hoping I could just pull the mechanism up
through the hole where the plastic gauge screws in but doesn't look like I can
do that? Am I right? Should I have my oil company do it?

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