Talk to service manager or store manager and say something like "I'd prefer to have a GOOD experience here and refer some of my friends this way to buy their bikes. This bike needs a little TLC, can you please help me out?". See where that goes. If it goes nowhere you could...
--See if there is some Better Business Bureau sort of arbitration in your area or a consumer rights organization. The BBB is, IMHO, a fence for businesses to hide behind while they screw customers, BUT it may be different in the land where bikes have zero KM on the odometers when new. Canada?
--Take bike to another dealer and have them tune it up. Nothing exorbitant, but just take care of the problems. You will pay for it, but then you have a bill to present to original dealer showing a third party DID find something to correct. While they may not pay you back directly, you could ask for store credit toward parts or gear (stuff they can't screw up). You'd have to pay, but you'd also have a bike that runs right.
--Talk to service worker at dealer and ask if you could slip him some cash to get the bike tuned, by him, after hours. Sure you shouldn't have to, but would it be worth $25 to have it fixed? If it took the guy an hour to make some adjustments, he'd get paid pretty well for his time.
--If you have bike financed through Suzuki, you may have some options there as far as calling their customer service. "I can't make payments on something that doesn't start, can I?".
Do your best to exhaust your civil, polite, reasonable-person options first. The last thing you want is someone in a hurry or mad at you working on your bike.