repairing

Hello, I cannot find exactly where the spark plug is though I have an idea that it might be the plug with the label "NGK" shoved into the engine. The problem is the manual is very barebones and does not explain how I can check for spark, though I am 100% I'm missing spark out of the 4...

hello. I recently bought a Husaberg FS 650, the engine had problems with overheating when I disassembled the engine, and before that was already taken apart a few times and changed in the head gasket and the head is planed on a lathe, the piston is in poor condition, has klipnjaca Luft, the...