The Mikuni carburetor pop-off pump accurately and easily measures the pop-off pressure on all watercraft and marine carburetors. The precision dial gauge allows accurate measurement while testing the pressure required to "pop" the needle valve. Can also be used for testing the needle valve seal on four stroke carburetors. By measuring the pressure required to break the seal a potentially leaky carburetor can be quickly identified and serviced before causing major problems down the road.
There are 30PSI, 60PSI, and 100PSI gauges available. The 30PSI pumps offer great low pressure control while the 60PSI pumps are adequate for most applications. The 100PSI models offer a larger scale for more capacity and are suitable for higher pressure pop-off springs. See below for a general guideline on spring pop off pressures.