Yeah, it's a 4-stroke. The cover does keep the engine
well lid up a bit, but it's the handle that prevents it from locking. I use a web strap to hold it up.
It's a mixed blessing- Cleaner, quieter, much more fuel
efficient, but bigger, heavier, and a PITA to maintain down in the well. Gotta change the oil
sometime, so it has to come out.