In this video, we show you how to change the Spark Plug on a Stihl MS170.

Health & Safety Warning - Please ensure that you have safely prepared the machine and workspace. If you are unsure about any aspect of the task please seek professional advice.

Transcript

Today, we're going to change the Spark Plug on a Stihl MS170 Chainsaw. First of all use a flathead screwdriver to unlock the shroud. You can now remove the shroud from the machine. Lift the air filter from the machine, this will make it easier to access the spark plug. Remove the rubber cap from the spark plug. Use the 19mm Hex Socket Spanner to loosen the Spark Plug. Once it's loose you can remove the spark plug by hand. By hand, screw the new spark plug into the machine. Make sure it's secure. Place the spark plug cover back on. Relocate the air filter back into place. Place the shroud back over the machine. Fix the shroud onto the machine by tightening the screw located at the back of the shroud. That's how you change the Spark Plug on the Stihl MS170. All the parts & tools needed for this task are listed in the description below.

Parts

Parts and tools included in the MS170 how-to video.

• Genuine BPMR7A Spark Plug - BPMR7A
• Air Filter Element - 1130 124 0800
• Top Cover/Shroud - 1130 140 4709
• 13/19mm Combination Plug/Bolt Spanner - 902 1361
• N/G Torx Wrench/Plug Spanner (13mm & 19mm) - 410 250