STIHL Grass Trimmer FS 480

Ensure you have STIHL gear lubricant for brushcutters

Gather necessary tools: filler plug wrench, lubricant tube

Check if grease is visible on the inside of the filler plug

Amount of grease to be added (in grams)

Ensure gearbox is not completely filled with grease

Refit the filler plug and tighten it down firmly

Wear face protection and work gloves

Remove the rope rotor as described in 'Replacing the Starter Rope'

Remove the spring housing and pieces of spring

Lubricate the new replacement spring with resin-free oil

Place the replacement spring with spring housing in position, bottom plate facing up

Check electrode gap (A) and readjust if necessary

Rectify the problems which have caused fouling of the spark plug

Does the spark plug come with a detachable adapter nut?

Screw the adapter onto the thread and tighten it down firmly to reduce the risk of arcing and fire

Is there a noticeable loss of engine power?

Clean away loose dirt from around the filter and inside the filter cover

Check the filter element (3) for dirt or damage

Complete machine Visual inspection

Carburetor Check idle adjustment – the cutting attachment must not turn

Metal cutting attachment Sharpen

Complete machine Visual inspection