The spikes are compatible with the following products from GARDENA (gardena.com): Sileno Minimo 250 and Sileno Minimo 500.
With the robotic lawnmower spikes you can finally give your robotic lawnmower brand GARDENA the necessary upgrade.
The 3idee grdn-silmin spikes provide a significant improvement in traction of your GARDENA robotic lawnmower and also provide sufficient lawn aeration while mowing.
The spikes are stainless steel parts, which can be sharp-edged and dangerous. All parts are deburred by us, nevertheless, caution is required during assembly. Dangerous cutting injuries can occur!
  
Please keep the components away from children.
 
                    
                (Figure a)
 Figure a
                                            Figure a
                    
                (Figure b)
 Figure b
                                            Figure b
                    
                (Figure c)
 Figure c
                                            Figure c
                    
                (Figure d)
 Figure d
                                            Figure d
                    
                1a - Turn your Gardena robotic lawnmower upside down and place it on a safe, soft surface.
 1b - In this position we need the robotic lawnmower.
1c - Cover the blades with a towel so as not to injure yourself during assembly.
 
                    
                 2a - Slide the plastic holder onto the wheel of the robotic lawnmower from the outside as shown.
 2b - Slowly turn the wheel 180° to proceed to the next step.
 2c - Now slide the second half of the plastic holder onto the wheel of the robotic lawnmower.
 
                    
                 3a - Now put the stainless steel spikes from behind on the wheel.
3b - Now take the supplied screws and put them through the stainless steel spikes and through the plastic holders. Now tighten the stainless steel spikes with your screwdriver.
3c - This is how the mounted spikes should look now.
 
                    
                Spikes: 
Stainless steel (V2A) is a corrosion-resistant and weatherproof material. Nevertheless, corrosion (rust) can occur with the contact of, for example, metal chips.
Holder (plastic): 
The adapter is made of high-quality polylactide (PLA) plastic. PLA is both a colorfast and UV-resistant material and has low flammability. Polylactide has a temperature resistance (glass transition temperature) of approx. 45°C-55°C and is therefore not suitable for use in the vicinity of direct / extreme heat and heat sources.
We wish you a lot of fun with your product.
Your 3idee Team