Re: Mcculloch 4hp no start

The older style Tecumseh with two adjustment needles is pretty close. The pre-’60 3.6 Scotts used a Tillotsen, and I never could figure why they stopped. MD12A for a while, MD35A, there may be others that might work.
If you have an old yard equipment repair shop within reach, they may still have Walbro LMGs, I’m pretty sure they had widespread application..