On the spare 235 I have, I had to get an impact to break the flywheel bolts, as trying to do it by hand was just turning the engine over. With the bolts out, it takes some wiggling to work it free. I used a 3/8" ratchet extension and a mallet to tap the front of it to work it loose. Got it loose enough where I was able to grab it and work it off the back of the crank. HTH.
