easy way to prim the carb. get a cheep squeeze bottle at the store and put a couple oz of gas in it. hook a short piece of hose to the carb and use the bottle to add gas. you don't need much. you could also add a little to the line from the pump to the carb, but i've never had an issue with that if the pump is good.
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ya, you don't want to over do it and wipe off the assembly lube too early. also
make sure you install the drivers side galley plug that does not reach all the way to the back of the block. if not you'll see pressure at the gauge, but it will be very low.
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HERE'S an older thread about oil plugs