MarvisJablonski

Greetings everyone. I have a 2015 FJ-09 with about 29,000 miles on the odometer. I went to start my bike 2 nights ago (Tuesday 10/12/2021) and it wouldn't start. I could hear the starter motor turning but the engine didn't fire. I have at least a quarter tank of gas but I hadn't ridden the bike in 16 days, so I assumed the battery had gotten low. I connected a battery tender and came back the next day. But the bike still didn't start. I noticed that the oil light would illuminate while the starter motor was engaged. I don’t know whether this is normal. Here's where I start guessing what the problem might be... I changed my oil back on Monday 8/30/2021 but I ran into some weird issues in the process. After draining out the oil (I'm pretty certain all the oil had drained out, but maybe I hallucinated this part) and replacing the oil filter with a new one, I replaced the drain bolt and started filling up with fresh oil. According to the owner's manual, it should take 2.7L of oil with a new filter. By the time I had poured in about 2.3L, oil started overflowing out of the hole where you fill the oil. It's entirely possible that I just have no idea how to measure oil, but I concluded that I had overfilled the oil. So I did the trick with the spray bottle attachment in order to pump out excess oil. After about 90 minutes of pumping the spray bottle, I could see in the sight glass that the oil level was within the tolerance. So I started the bike up and ran it for about 5 minutes and then I let the bike cool down for another 7ish minutes and the oil was still within the tolerance. I then went on a multi-day road trip of about 700 miles. The bike ran beautifully. The engine temperature consistently read around 160 degrees F on the thermometer. I even checked the oil sight glass a few times during the trip and the oil level appeared to be within the tolerance. Then today as I was trying to start the bike, I checked the oil sight glass and it appears to be completely full of oil and the oil appears to be dark in color (photo attached). So what I’m guessing happened is that somehow I managed to put too much oil in the bike. I may have failed to measure the oil properly and/or I may have been hallucinating when I looked at the sight glass and saw what I thought was the oil level within the correct tolerance. I’m guessing the excessive oil destroyed my spark plugs (and possibly more components, up to and including maybe the whole motorcycle?). Here’s where I speculate on what I might be able to do to fix the problem… I think I need to drain out the oil and err on the side of putting way too little oil in when I’m refilling it. I also think I need to take the bike apart to get at the spark plugs and probably put new ones in. I’ve googled around trying to figure out what to do to fix things if you put in too much oil and the only thing I can find is people saying “Don’t put in too much oil! It’s bad! Don’t do it!” but I haven’t been able to figure out what problems this actually causes and whether there is any recourse for fixing said problems? Or am I just completely SOL and I need to buy a new motorcycle? Or better yet, given my utterly worthless mechanical skills, maybe I should just abandon my bike in an alley somewhere and never even think about riding again? I doubt anyone will read this post, but I welcome any and all feedback! Thanks.