This is a genuine Poulan replacement part, it is sold individually.
A spark plug is used to deliver electric current from an ignition system to an internal combustion engine.

After time spark plugs will become dirty or fouled.
It is a good idea to replace the spark plug once this happens.
You should gap your spark plug according to the owners manual of the outdoor product you have.

Genuine Husqvarna replacement part, this item is sold individually.
This part is used on all of the Husqvarna Chainsaws listed below.
The purpose of this nut is to attach the Clutch Cover along with the Chainsaw bar.

This is a genuine manufacturer sourced replacement part designed for use with Husqvarna chainsaws, brushcutters and hedge trimmers. This is the hose that delivers fuel from the tank to the engine. It is made out of rubber and it is sold individually. Please note fuel filter is sold separately.

This is a genuine OEM replacement part used on a variety of Lawn and Garden Equipment. This part is made out of Metal and it is Sold Individually. This steel washer has several applications based on your unit. Please refer to diagrams for proper application.