STIHL Grass Trimmer FS 400

Carefully remove the rope rotor with washer (3) and pawl (4)

Did the rewind spring pop out and uncoil during this operation?

Pry the cap (5) out of the grip

Remove the remaining rope from the rotor and starter grip

Tie a simple overhand knot in the new rope and thread it through the top of the grip and the rope bushing (6)

Ensure you have STIHL gear lubricant for brushcutters

Gather necessary tools: filler plug wrench, lubricant tube

Is grease visible on the inside of the filler plug?

Enter the amount of grease added (up to 5g)

Ensure the gearbox is not completely filled with grease

Refit the filler plug and tighten it down firmly

Move the slide control to STOP-0

Check for any damage to the spark plug

Inspect the spark plug boot for wear and tear

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

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