Just pull it. This is reminding me of the time my VN-750 (bike) alternator shorted out. First step was to remove the engine as the frame blocked access to the alternator cover. In the case of the Indy 550 LXT I have to remove the primary drive to gain access to the bottom bolt holding the starter in place. No problem, I'll just spend $15 on a puller.
Problem; google likes to return search results for Sportsmen 500 ATV's even when I enter "polaris 550 indy lxt clutch puller". Do I have a Fuji or non-Fuji motor? Beats me. This was making my brain hurt. Plenty of tools out there for 2011 and earlier sleds also.
Then I saw the can of WD-40 on the workbench. If it is just a dirty shaft on the starter gear, then maybe I can spray it clean. But I recalled years ago when I was shooting my Browning Buckmark (a 22lr semi-auto pistol) in -10F weather. I cleaned off the gun oil with WD-40 so that it would function in the cold. But even WD-40 turned to gum in that weather.
Long story short I said the heck with it. Worst case scenario is that I still have to pull start the sled. I engaged the gear with my hands and sprayed it down good. It properly engages now when using the electric start. I repeated the engaging/spraying a 2nd time. Now I just have to see it is works properly in cold winter weather.
My thoughts on the Polaris 550 2-seat sled. I bought it because my wife and I are in MN for ten days over Christmas. Neither one of us rides enough to become anything more than novice riders, so we wanted the lightest 2-seat sled we could find. I wanted a a fuel injected 4-stroke, but they were 50 pounds heavier and $2000 more expensive, so 2-stroke Polaris it was. We are rarely off the trails and only put about 100-150 miles a year on it.
The battery/starter combo is a joke. Even fully charged it will not turn over the motor in -10F weather. In the coldest weather it starts, but I typically have another person help pull the starter cord; it is that hard to turn over the engine.
The mirrors appeared to have been installed for decoration only. Prior to breaking off, they vibrated too much to be of much use on the trail. I bought a steel mirror that mounts on the hand grip. The choke lever is another poorly designed part. It should be made from aluminum or steel, not the fragile plastic that breaks off if not treated very gently. The reverse button does not function in the manner stated in the manual, but it still works fine once I figured out how it actually works.
That said I have no regrets with this sled. It is fun.
Polaris 550 Indy LXT 2-seat