Hey there pauly 1. I just picked up a 2017 F3-T and upon reading this thread just went out to pop my seat off and found the schrader valve that you're speaking of. How do I adjust it and how do I know how much to adjust it? If it's based on rider weight I'm 5'7 195 lbs and when I ride 2 up with my girlfriend that puts us at a total of 380 lbs. Thanks for your help.
There’s a table on a sticker under the rear seat that gives recommended pressure based on rider and passenger/gear weights
Just remember that
if your Spyder's got the Auto version of the ACS, it doesn't really matter how much air
YOU put into the air bag, the ACS will automatically re-adjust the air bag pressure to maintain the preset ride height iaw the parameters recorded in the on-board computer!!

. If you've got the Manual version, ie. the type that doesn't have an on-board compressor
at all, then changing the air bag pressure
will vary the ride height & to a lesser extent, the 'feel' of your ride; so you can play with/vary the air bag pressure to your heart's content via the Schraeder valve!!

hyea: .
But when your Spyder's got the Auto version
AND it's working as it should (yeah, good luck with that!

) as soon as you start to ride, it'll reset the air bag's pressure to meet the preset ride height parameters and you're just gonna get what you gets iaw the on-board computer's height settings
regardless of whatever
you might try to do to the air bag pressure! :lecturef_smilie: And IIRC, it was about 2017-2018 that BRP
started to remove the Schraeder valve & therefore the rider's ability to ever adjust that air bag pressure manually on those Spyders that came out with the ACS - so there were
some Spyders with
NO Schraeder valves under the seat,
but they were meant to have the Auto ACS; and there were other Spyders that had
JUST the Schraeder valve under the seat & no compressor;
BUT despite telling us that they were changing to this
Auto ONLY or
Manual ONLY air bag suspension system dependent upon the Spyder model, they still continued to send out Spyders with
BOTH a compressor, all the Auto ride height sensor/setting stuff,
AND the manual Schraeder valve under the seat - so who really knows which bike is meant to have what, cos it seems that BRP didn't have any consistently applied plan?!? :banghead:
In your case Athorn, it sounds like you're
MEANT to have the Auto version of the ACS, only it's either not connected or the height wasn't ever set properly somewhere in the works; the ride height sensor's not connected at all & by chance the ACS
thinks it's already at Max height so does nothing (you might want to check that the sensor link
IS actually connected to the swing arm & the sensor sector arm - you should be able to find the link on top of the LH Swing Arm somewhere near the rear shock

); or as you already think, someone simply forgot to install some important component &/or all of the important ACS bits entirely so you're left without the air bag &/or some components of the ACS completely! Nett effect, your ACS isn't working nor apparently capable of working at all with the currently installed equipment - and one way or another, you're meant to have
SOME form of air bag system and pressure adjusting system, only atm, you have
NONE! :shocked:
Still, regardless of the actual cause/s of your Ride Height/ACS problems,
it's a new Spyder & your ACS should work, so this should be fixed under warranty; so find a dealer you feel you can trust and get them to sort it! :lecturef_smilie:
The more you play around with things & try to fix this yourself, the more likely you'll touch
something important/that you shouldn't touch and the less likely BRP will take responsibility for this issue & fix it under warranty like they should, so get it to a dealer ASAP!! :banghead: . If you have to, tell the (new) dealer that you don't trust the mob you bought it from (you don't hafta say who it was or why... altho I'm sure the new mob could find out if they wanted!

) so you're looking for a new dealer to do
all your servicing/maintenance & sourcefit farkles etc, and that if they can get this ACS cluster f... err schmozzle sorted for you reasonably quickly & painlessly, then they'll be it!!

hyea: (How much of that you
actually give them is a bit of a moot point really, altho if they do a good warranty job on this, I would be inclined to give them whatever work I felt a dealer needed to do... however little or large that amount of work may be.

) After all, dealers don't usually make a heap thru
selling Spyders, the bulk of their income/profit usually comes from the servicing & maintenance that generally follows a sale, so if you put all of that (or whatever you're likely to get done by a dealer) up for grabs depending on how well they look after this warranty issue for you now, they
might even treat you fairly well.... '
might' being the most important operative word here! :lecturef_smilie:
But whatever you do, wherever you take it; this issue sounds very much like a dealer/warranty issue & something yiu really shouldn't risk by playing with yourself! :lecturef_smilie: