"get the number off the pump and check ebay, you may get a pleasant surprise"
Been there, done that. In this case, no bargains.
"Is it vacuum operated or crankcase pulse?"
In my world, vacuum and pulse are the same thing. An engine with a piston that goes up and down make pulses. A vacuum-operated fuel-pump has check-valves to created a vacuum.
"Is it possibly a fuel shut off instead of a pump? Or combo?"
My 1995 Suzuki has a combo. Vacuum-controlled shut-off valve under the tank and a separate vacuum-fuel-pump. It also has a "primer" position on the fuel shut-off valve under the tank to make starting easier if it has been run out of gas.
The 1992 Suzuki that I have tore apart has a conventional tank shut-off valve. Just "ON", "OFF, and "RESERVE." That is connected to a large vacuum-fuel-pump that works off the engine crankcase pulses. I say "large" because it is twice the size of a Briggs&Stratton pump. The OEM Suzuki pump is riveted together. I have not tested it yet. Just wondering why I need it at all. I am wondering if Suzuki only put it there to prevent carb flooding when the engine was off and did not want to trust users to remember to turn off the gas-valve.
The Briggs & Stratton pump is only $12. Beats near $100 for the Suzuki pump. I might buy one just to have on hand, IF I don't wind up using it.
Funny this came up. I have a 2000 watt Generac Inverter generator that does not want to start. It has a conventional choke plus a push-bulb gas primer. No matter how many times I push the bulb, it gets no gas. I just tore it apart and to my surprise? The bulb does not pump gasoline like I thought it did. It sends a vacuum signal to a vacuum-fuel-pump. Not working, but all this time I thought it was a direct gasoline primer.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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