Husqvarna AUTOMOWER 550 Owner Manual - Page 43

5 Maintenance 5.1 Introduction - maintenance For better operating reliability and longer service life: check and clean the robotic lawnmower regularly and replace worn parts if necessary. All maintenance and servicing must be done according to Husqvarna's instructions. See Guarantee terms on page 59. When the robotic lawnmower is first used, the blade disc and blades should be inspected once a week. If the amount of wear during this period has been low, the inspection interval can be increased. It is important that the blade disc rotates easily. The edges of the blades should not be damaged. The lifetime of the blades varies immensely and depends for instance on: • Operating time and size of the working area. • Type of grass and seasonal growth. • Soil, sand and use of fertilizers. • The presence of objects such as cones, windfalls, toys, tools, stones, roots and the like. The normal life is 2 to 5 weeks when used under favorable conditions. See Replace the blades on page 43 on how to replace the blades. 5.2.2 Chassis Clean the underside of the chassis. Brush or wipe with a damp cloth. 5.2.3 Wheels Clean around the front and rear wheels. Grass on the wheels can impact on how the lawnmower works in slopes. 5.2.4 Body Use a damp, soft sponge or cloth to clean the body. If the body is very dirty it may be necessary to use a soap solution or washing-up liquid. WARNING: Wear protective gloves. Note: Working with blunt blades gives a poorer mowing result. The grass is not cut cleanly and more energy is needed, resulting in the robotic lawnmower not being able to maintain such a large area. 5.2 Clean the robotic lawnmower It is important to keep the robotic lawnmower clean. A robotic lawnmower with large amounts of grass stuck to it will not cope as well with slopes. It is recommended to clean using a brush. CAUTION: Never use a high-pressure washer to clean the robotic lawnmower. Never use solvents for cleaning. 5.2.1 Chassis and blade disc 1. Set the Main switch to position 0. 2. Lift the robotic lawnmower onto its side. 3. Clean the blade disc and chassis using for example a dish brush. At the same time, check that the blade disc rotates freely in relation to the foot guard. Also, check that the blades are intact and can pivot freely. If long grass or other objects find their way in, these may impede the blade disc. Even a slight braking effect leads to a higher consumption of energy and at worst will prevent the robotic lawnmower from being able to mow a large lawn. 5.2.5 Charging station Clean the charging station regularly from grass, leaves, twigs and other objects that may impede docking. 5.3 Replace the blades WARNING: Always use blades and screws of the right type. Husqvarna can only guarantee safety when using original blades. Only replacing the blades and reusing the screw can result in a screw wearing during mowing and shearing. The blades can then be propelled from under the body and cause serious injury. Replace worn or damaged parts for safety reasons. Even if the blades are intact, they should be replaced on a regular basis for the best mowing result and low energy usage. There are 3 blades on the robotic lawnmower, which are screwed into the blade disc. All 3 blades and screws must be replaced at the same time to obtain a balanced cutting system. 362 - 002 - 06.02.2018 Maintenance - 43