Those round caps are where you access your valves for making adjustments,unlike the dohc no shims are required.Surprised no one has asked does it run and if so how well.I noticed the po has put pods on the bike.
The bike runs. Not totally well. When we got it, it actually fired right up. We drove it around the neighborhood for a day to asses it. The clutch was not adjusted correctly, the idle adjustment was not adjusted correctly. After about an hour of pulling it in the garage, tinkering and pulling it back out, the battery died. Got a new voltage reg r-296 from oreilys, battery now charges. Adjusted the clutch to fully disengage, not it actually pulls (a little bit... lol) when shifting into 2nd gear. Had to cut the front brake sensor wires and tape off. the bike suffered a low side on the right. adjusted the idle adjustment. fresh gas, cleaned plugs. Its running, hes taking about 2 miles or so to work and back everyday. yes it has pods, and the baffles look to have been punched through at the top hole. It pops kinda bad. Next thing on the list is to get fresh oil in it. Some cheap-o air pods for the short term right now, and new carb boots. Once we get that I am going to pull the carbs, clean em, jet em, sync em and hopefully a new set of plugs and she will be good. She fires right up in under a second, first time, every time. Definitely a diamond in the rough though. I potentially have a new to me tank coming that at least has all the paint on it. Will probably take my time and fix up the one it has now once the replacement comes and make it look real nice. One thing I did notice and I'm not sure whats causing it just yet, but last night after i put the voltage reg in, i took it for a spin to charge the battery up a little and I noticed a bit of a wobble at 40 mph. I dont know exactly what caused it, im used to a crotch rocket with 42 psi tires so i dont know if its just these tube tires being crappy or if the neck bearing got screwed up in the low side. Going to do some more tests on that in the coming week. If my roomate decides he wants to keep it long term, we may look into getting the xs400sh mag wheels and brake rotors for it, hes a bigger dude. prolly 6'2 250 lbs.
Im undecided on whether or not I will keep pods on it though I think im going to have to. Nothing under the seat that came stock is still there. I will probably end up getting some nicer oilable pods and air restricters for it in the coming weeks. With that being the case, I really want a set of side covers for it. My buddy has a 81 honda cb650 with air pods and if he gets caught in the rain, he only gets about 5 miles before the carbs start sucking in water. I hope that possibly putting extensions on it to move the pods a little further back and installing side covers i can circumvent that issue.