Take it to a professional
After the bolt carrier is removed, the pin is driven straight down to remove.
The first trick is to pull the plastic handle straight out. Otherwise the receiver cover can't be removed.
Push the safety lever fully forward to dis-engage the bolt stop. Then the bolt can be removed rearward.
I have a Eastern Arms (sold by Sears and hardware stores) Manufactured by Iver Johnson as well as others. It is a 16 gauge single barrel shotgun model 1929. The firing pin is removed by cocking the hammer back, there is a set screw at the top of the receiver , when removed the firing pin can be removed from the hammer side;watch for the spring. Installation is the reverse.
On a 2001 Polaris Sportsman, the fuses are typically located under the front hood, near the battery. You can find them in a fuse box, which is usually a small rectangular cover that can be removed for access. Always consult the owner's manual for specific details regarding the fuse layout and any troubleshooting steps.
You first need to remove the fore arm and then the barrel needs to be removed from the receiver. The bolt will then come out the front of the receiver.
It fires both barrels because it isn't clean. The stock needs to be removed and the internals need a good blasting with cleaner and compressed air.
Retract the bolt action to it's furthest open position. Pull the trigger which will release the bolt retaining latch, allowing the bolt to be removed from the rifle.
Once you have the forearm removed you need a special spanner wrench to remove the tube/nut below the barrel. The bolt handle pin is then drifted out of the bolt and then the bolt handle can be removed from the bolt body. The barrel will now come out the front end of the receiver.
First remove the butt plate or recoil pad. Then, take a large flat blade screwdriver 12" long or so and insert it in the stock bolt hole. There is a nut that can be removed by turning counter clockwise. One the nut is removed, the stock will slide right off.
To remove the spark plug on a Polaris Sportsman 400, first ensure the engine is cool and the ignition is off. Locate the spark plug, which is typically found on the side of the engine, and disconnect the spark plug wire. Use a spark plug socket and ratchet to unscrew the spark plug by turning it counterclockwise. Once removed, inspect or replace as needed, and then reassemble by reversing the steps.
I had that on my PC too. It annoyed me. I noticed that in my CCleaner program that it gave me the option to stop it from autoloading when windows boots up. So I removed it and have not had the problem since. The thing is, I dont know what it is, so I didnt want to try and remove it. If you dont have CCleaner you can get it from download dot com. Just go into Tools then StartUp and deselect it.