Husqvarna 550 XP TrioBrake Owners Manual - Page 30
Throttle lockout
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MAINTENANCE Checking the inertia brake release Checking the brake trigger Place the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other object. See the instructions under the heading Start and stop. With the engine turned off, hold the chain saw over a stump or other firm object. Let go of the front handle so that the bar drops towards the stump as the chain saw rotates around the rear handle. Grasp the chain saw firmly, wrapping your fingers and thumbs around the handles. When the bar hits the stump the brake should be activated. Checking the right-hand brake trigger Apply full throttle and activate the chain brake by tilting your left wrist forward onto the front hand guard. Do not let go of the front handle. The chain should stop immediately. Check that the right hand guard is not damaged and that there are no visible defects, such as cracks. Throttle lockout Push the trigger up and forwards to check that it moves freely and is securely hinged to the clutch cover. • Make sure the throttle control is locked at the idle setting when the throttle lockout is released. Never carry or hang the saw by the trigger! This could damage the mechanism and disable the chain brake. • Press the throttle lockout and make sure it returns to its original position when you release it. • Check that the throttle trigger and throttle lockout move freely and that the return springs work properly. 30 - English