The Vacu-Jet was not really satisfactory with the deep fuel tank which your engine has - the Pulsa-Jet does not let the mixture lean out when the fuel level in the tank is low. The Pulsa-Jet has a built-in fuel pump, while the Vacu-Jet relies purely on venturi vacuum to draw fuel up from the fuel tank. In case you care, the simple way to distinguish between Vacu-Jet and Pulsa-Jet on that generation of carburetors, is that the pull-knob on the choke is horizontal on the Vacu-Jet and vertical on the Pulsa-Jet. That means somewhere along the line, someone has converted your 80102 into an 80202, as far as carburetor and fuel tank are concerned. (Note that it still has the Choke-A-Matic coupled choke, which was available with both carburetors). However your picture shows that it now has a Pulsa-Jet. The fifth digit says it has a rewind starter.įor your immediate purposes the key point is that it had when it was new, a Vacu-Jet carburetor, not the more elaborate Pulsa-Jet. The fourth digit signifies that it has plain main bearings, not ballraces, and it does not have a flange mount, or gear reduction, or any form of auxiliary drive. The third digit means it has a horizontal crankshaft and a Vacu-Jet carburetor. The second digit says it is of the very first design generation after Briggs adopted its standard model numbering system. The first digit tells you it has a displacement of 8 cubic inches (130 cc). Your engine's model number, 80102, tells you quite a bit about it. Http:/ / / BriggsDocumentDisplay/ lrvvA-wU7eL7hAxB91ObQ.pdf Http:/ / / BriggsDocumentDisplay/ Z6jmvGVJ1DajI.pdf
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