I would search the web for "Air gun repair" or see the link below.
I would search the web for "Air gun Repair" and locate a shop near you that can repair it or see the link below for shops that repair air guns.
Contact the maker for a replacement manual
To load pellets into a Marksman Repeater, first, make sure the gun is not cocked and the safety is engaged. Open the breech by pulling it back until it locks into place. Place a pellet into the breech, skirt first, and then push the breech closed until it locks. Finally, disengage the safety and aim the gun in a safe direction before firing.
200 or so ------------------------------------------------- The slowest BB gun ( NOT Airsoft or Pellet gun) that I know of is the Marksman 1010, it is rated at 200 FPS. The fastest BB gun I could find is the Crosman 2100 that is rated at 755 FPS. This gives you an average of 477.5 FPS Pellet guns and rifles can attain much faster speeds.
It depends on the model and the caliber of the Pellet gun.
The Marksman Model 740 .177 pellet rifle. It has a wood-patterned plastic stock. It is a single shot rifle that folds in the middle for cocking and loading. The safety auto-enables after every trigger pull. You must cock and reset the safety
I think you mean pellet gun. That is a gun that fires a small lead pellet but does not use gun powder. It uses compressed air or compressed gasses to push the pellet.
A pellet gun is not adequate for protection, and will get you arrested.
Any pellet gun should be handled like a real firearm. Yes you can be killed with a pellet gun under the right circumstances.
It all depends on the model and who made the pellet gun. I suggest that you re-post the queston with the model and make of the pellet gun to get an answer.
No. Even if it would fit in the chamber, there is no firing pin on a pellet gun.