you joined in 2019, so if you bought new you would have a 1330cc. unless you bought used, then you have a twin, which has a few more problems. like very fine cracks in vacuum hoses, bad plug wires
would help for us to help identify year and model!
In one of his earlier posts back in Sept 2019, Pictreed mentions that his Spyder is a 2014 RT, so that means it's a 1330 Triple & that it is most likely something to do with poor quality gas or a less than ideal supply pressure causing the issues.... or maybe there's been some rodent damage to the wiring over its lay-up period?!? Or possibly somethings blocked a breather vent or clogged the air intake &/or filter?? :dontknow:
But beside all that, excess oil that's "
WAY over" isn't a great thing for a dry sumped engine like the Rotax triple either, so it might be worthwhile to just drain what's in there & only return a bit less than the recommended capacity, just to be sure to be sure! :lecturef_smilie: . If it hasn't run much since the last oil top-up or change, then you may not need to worry about a cracked block just yet (if ever!

) Because they're dry sumped, in my experience too much oil in these pretty robust engines is generally more likely to reveal itself first via excess oil appearing outside the top of the motor thru rocker gaskets etc or the air inlet/filter housing are full of it & it's busy making a (bit of a) mess well before anything else critical can be damaged.

pps: .
So because you can't really run it long enough to check the oil level properly at this stage, it's probably a good idea to check how much oil
is actually in there by draining it out! No real need to change the filters unless there 's some other indication that warrants that, just remember that the oil capacity without new/empty filters will be somewhat less than that needed for a full oil & filter change! IIRC, the manual will even tell you how much less oil you'll need.

. If it's getting close to a scheduled oil/filter change time, why not just do it anyway and then
KNOW that you've got the right amount of oil in there to start the season with! :dontknow: . And if instead, the oil is relatively new & unused, then you can simply catch it in a clean container & carefully measure it back into the filler with a funnel or pourer that has a fine metal mesh in it in order to grab any larger particulates that may have made their way in during the drain/refill process.

hyea: . Once you're
SURE the oil quantity in there is reasonably close to correct, even if it's a little under by 1/2 a quart or so, it's still another possible issue excluded, isn't it?!
Over to you Pictreed. Good Luck, hope it's a relatively easy one to sort... :cheers: