I would wait till after at least your 1st oil change to do the clutch kit.
You will be chasin your tail with settings and finish rpm as the sled is quite tight when new...more so than a 2 stroke. It will be low on rpm and feel slow...don't worry...needs a breakin.
Leave the oil in it till 300~500 miles...its gonna collect all kinds of debris from breakin.
Do the 1st oil change AND clean the screen. Then oil change again at 1000 miles.
Then you'll be good for once a season oil changes.
***Use petroleum oil till at least 1000 miles. Synthetic inhibits good ring seal and other breakin...switch to semi or full synthetic once shes well broken in.
Change the chaincase oil when you do the engine oil changes as it will accumulate a lot of debris too.
For breakin.....
Start the sled and let it idle till the red light comes on and shut off....do these cycles a few times...several heat cycles are a good thing. Get this out of the way before riding season.
Good time to check the coolant level and concentration....make sure it's 50/50...any stronger and it becomes way less efficient at cooling and the Nytro needs all the help it can get.
Once you can ride, vary the rpm a lot and avoid any sustained WFO BUT def flog the damn thing...lots of WFO bursts and hard accelarations. You want to get good ring seal and mate all the internal parts.
The track will stretch a lot in the first 1000 miles too so watch it...but run it on the loose side...the Nytro skid has retarded approach angle and isn't an overly smooth roller so the looser spec is best just enough to keep from ratcheting for your conditions.
IF the track aint stretchin...yer babying it too much...seriously.
Watch the skidframe for loose fasteners
The sled will constantly get stronger/faster right to 2000 miles and more....the motor is built like a tank and takes a good while to fully breakin...not a bad thing but frustrating for riders looking for full performance right out of the gate...and very frustrating for low mileage riders....can take a couple seasons to get er running strong.
There are more than one Nytro's flogged off by an impatient or dissatisfied owner in their initial season. ! lol It was my 1st 4stroke and I was less than impressed when brand new and nearly went that route....broken in/dialed in shes pretty impressive.
Oh and get ready to re learn how to ride...! Nytro school I called it. Between compression braking, the inverted power curve (all torque off the bottom and tapering off up top vs 2stroke the other way) and the weird but sometimes wonderful Nytro chassis You'll be frustrated and likely won't ride it well...or as well as previous sleds. It is fun when you come to terms with it.
Big torque, automotive running quality and reliability, great mileage on reg fuel and no injector oil....Very cool shat.
This was my experience with my new Nytro. She runs strong and is reliable as a hammer so far 2 yrs old with 5000 miles.
