I was trying not to ask more questions but since this is the first time I've ever pumped up lifters, I've got to ask. Per the service manual I've immersed them in Kerosene. Of course it also says not to pump them too much, but i don't know how much is too much. I got a wooden dowel the same size as the pushrods and have been pumping on them by hand. At first they pushed down quite a bit, maybe 3/8" or so. I pumped them each maybe 10-12 times. Now they're at a point where they push down maybe 1/8". In comparison, I can't push my old lifters down at all. My question is, how much should I be able to pump the new ones when they're done? Is it safe to assume they should move a little bit to cushion the pushrods?
Not really any need to pump the lifters up until firm, they bleed down anyway every time you shut the engine off if the lifter ends up on a high spot on the cam when the engine stops turning, they pump up right away on starting. I normally submerge them in oil and pump them until I see no more air bubbles. How many times you pump them is not important. You'll never get the new ones as firm as the old ones because the ones that came out of the engine had oil pressure to them and when you removed them they still hold pressure by the ball and spring.
Here's a another technique that works well if you really want to prime them. Have a cup or small bowl of the oil you want to use. Find a piece of hose that has the same ID
as the OD
of the lifter, you only need a piece about 6-8" long. Slip the hose over top of the lifter, ensuring you don't push it onto the lifter too far as to cover up the side oil hole. Put the lifter in the oil so that it covers the side hole. Start your shop vac, and using your hand, create a seal from the vac hose to the hose on the lifter. When you see oil starting to come out the top of the lifter, it is primed.
Not matter what you do you're going to hear some clatter when you first start the bike until oil pressure gets through the system and into the lifter bodies.