I just purchased a replacement for my old Lawn Boy model 8070 which lasted my dad and me more than 30 years, The "new" mower is a Lawn Boy model 8243. I was cleaning it up and looking it over after getting it home today and I could not find the priming bulb. My retired Lawn Boy had one and needed 4 primes before it would start. I have yet to try to start this new mower as it is raining and I can not find that priming bulb/button. Do the newer 2 cycle engines not require priming?