How to Convert and Change Strimmer Attachments and Blades on a Stihl Kombi Tool FS-KM

Having a Stihl Kombi tool can be very useful but knowing what can and can’t fit to your model can be slightly confusing. Here we have created a straightforward guide on matching the correct cutting combinations and how to fix and change a mowing head or blade depending on the gardening task.

What Cutting Attachments are Available?

The diagram shows the approved combinations so for example if your cutting attachment is no.12 or no.13, this can be used with no.18, no.21 and no.25.

*Please Note: Only the components in each row can be used together, and no other combinations are recommended due to the risk of accidents*

Here is a breakdown of what each number in the diagram is:

Mowing Heads

• 1) STIHL SuperCut 20-2
• 2) STIHL AutoCut C 25-2
• 3) STIHL AutoCut 25-2
• 4) STIHL TrimCut 31-2
• 5) STIHL FixCut 25-2
• 6) STIHL PolyCut 20-3

Metal Cutting Attachments

• 7) Grass cutting blade 230-2
• 8) Grass cutting blade 230-4
• 9) Grass cutting blade 230-8
• 10) Grass cutting blade 250-40 Spezial
• 11) Brush knife 250-31
• 12) Scratcher tooth circular saw blade 2001)2)
• 13) Chisel tooth circular saw blade 2001)2)

Deflectors, Limit Stop

• 14) Deflector only for mowing heads
• 15) Deflector with
• 16) Skirt and blade for all mowing heads
• 17) Deflector without skirt and blade for all metal mowing attachments and brush knife
• 18) Limit stop for circular saw blades

Handles

• 19) Loop handle with
• 20) Barrier Bar
• 21) Bike handle

Harnesses

• 22) Shoulder strap may be used
• 23) Shoulder strap must be used
• 24) Full harness may be used
• 25) Full harness must be used

1. Not approved for KM 55, KM 55 R, KM 56, KM 56 R, FS 55 T, FS 55 R
2. Not approved for FR 85 T and FR 130 T

How to Mount the Cutting Attachment

Before starting make sure the machine is switched off and place the machine on its back so the cutting attachment is easy to access.

Depending on the attachment (normally a blade) you may need a kit which includes a nut (3), rider plate (4) and thrust washer (5), this should either be a kit with the machine, if not can be purchased separately.

Large Metal Blade Fixing Kit for Stihl Brushcutters - 350 193

Small Metal Blade Fixing Kit for Stihl Brushcutters - 350 190

*Please note: You will need to check the fitment information to see if this suits your model*

How to Mount Metal Cutting Attachments

There are various blades designed for different projects. The cutting edges of (2), (4) and (5) may point in either direction. The cutting edges of (1), (3), (6) and (7) must point clockwise.

• Firstly, fit the thrust washer (10) – convex side must face up.
• Then, fit the rider plate (11).
• Next, Block the shaft (12).
• Finally, use the combination wrench (14) to screw the mounting nut (13) onto the output shaft counter-clockwise and tighten it down firmly.

How to Remove the blade

• To begin, block the shaft.
• Then, use the combination wrench to loosen and remove the nut (13) clockwise.
• Lastly, take the parts off the shaft without removing the thrust plate (9).

How to Fit the Mowing Head with Screw Mounting

• Firstly, screw the mowing head counterclockwise on to the shaft (1) as far as stop.
• Then block the shaft.
• To finish, tighten down the mowing head firmly.

How to Remove the Mowing Head

• To begin, block the shaft.
• Then, unscrew the mowing head clockwise.

WARNING

*Before starting wear protective gloves to reduce the risk of contact with the sharp blades.*