Thanks. After removing and re-plugging the problem has not come back but I will keep that in mind.

They are for changing tires sizes

Check you tube Really Talk Powe sport. His channel is all cfmoto and he's got a video where he does a cannistwr delete and removes the front plastics. You pull the lower sides off first then pop up but it's easier to watch it done.

What made it so difficult to bleed?

They may be crappy relays. I ordered a pack of new ones so I'll switch them and see what happens. I continued to let it run for a while and it didn't repeat the issue after moving the relays around from other slots. I can test amp draw and see buy I'm hoping this is the issue. I will also look at the temp sensor at the radiator.

"heat soak" is when you've been running a long time, especially at low speeds and the whole engine compartment gets hot because of the heat. Everything is hot. It's normal but weak parts can't take it.

Problem is the relays test fine on the test bench but they maybe be cooling down quicker than I can test them.

I let it run for another half hour to really get it heat soaked. The fan wasn't running every few seconds anymore and it was starting to climb bars on the gauge so with careful preparation and water hose blasting I removed radiator cap to a geyser of green coolant all over.
Being uninjured, I then decided to check the relays again. 2 of them seem swollen and I'm wondering if the heat soak is causing them to go bad but only when very hot. Picture attached.

Thanks for the reply. Gotta to let it run to day for about an hour and of course, no signs of any overheating or any odd behaviors. I didn't ride it, just idled and revved some. It stays at 150f and the fan comes on and off everyrdew seconds and I get the normal 4 bars on the coolants. gauge.

There is a plug that was touching the radiators fill neck wrapped in the radiator cap chain so I moved it out of the way. Not sure what it is, maybe a sensor or something.

It didn't seem to be hot when it was beeping Sunday but that doesn't really mean anything. I have attached a few pics. Coolant was green and clean and full. I hate chasing problems like this.

Have been riding weekly for few hours each week in same place. Yesterday had an overheating flashing display and full bars on temp with beeping. Stopped and checked coolant level which was between lines on resivoir. Pulled and swapped fan relay, no change. Then ignition off for a minute then back on. After a few seconds the fan cuts on (engine off) and bars go down and it's OK.
Happened 3 times near the end of our 30 mile ride. Mostly slower trails, no climbing or mud. Just dirt, woods, and grass. Radiator clean. I only have about 270 total miles on the machine. So it's not muddy, beat up, or abused. Always have 2 riders so we generally take it easy. We spend 3+ hours for these 30 miles, stopping to fish or crab.

On third overheat I noticed that while trail cruising (10-20 mph) my thumb stays steady but something changed in how the engine was responding from perfectly smooth to light surging and immediately the temp bars started to rise. Took about 5 minutes until beeping and flashing warning. When it happened the third time I knew it was something related because I noticed it the first 2 times but disregarded it. I would compare it to how a new rider rides and tries to ride very slowly but they aren't used to the thumb throttle so they bump it back and forth so the machine surges up and down in rpms especially with rougher terrain (ruts and bumps) but I am very used to my throttle and wasn't moving it at all when this started.

I've never had it back to the dealer because it's 2 hours away and only problem previously was a starter relay that I replaced myself a while back.

Any ideas? We were done for the day so I don't know if it will keep doing it but it probably will. We have over 100 hours on these same trails at easy speeds with no other issue prior to this.

I was able to hit 72 mph on mine but when the rpm hits 7000 the dash starts beeping.  I figured that was fast enough.

The filter on the new 800 is a foam type just like the unifilter. No paper but looks the same except blue. I think they must be improving past issues.

Mines new as of July 2019.

It's where you expect it to be, under the hump in front of you in the middle just behind the handlebars.

You pull the two sides outwards at the rear of the panel. There are 2 rubbery tabs that hold that in. One you pull out you then pull up and back and the while housing comes off to reveal the normal looking cover with clips all the way around.

Took me forever to find it also because you are afraid of pulling on plastic but it's meant to pop off.

My air filter was foam type just like the Uni, by the way.

Went riding Sunday. Pretty awesome. Much power and speed. Comfortable for 2 riders and seems to be a great machine. I wish reverse was geared to be not so snappy and the belt drive system was less noisy. I know they're all sort of loud, though.

My 2019 Cforce 800 came with a foam filter. It's blue but is similar to the unifilter that I just bought. I wonder if I should change it or leave it.

Just picked up a black 2019 Cforce 800. Excited to see how well it operates. Much experience with other brands but wanted something more fancy for a good price. Loving these lights!