Braking System; Testing The Engine Control Module - Husqvarna CT 36 Series Operator's Manual

Operation
4.8

Braking System

The braking system of the trowel is spring-loaded.
■ The brake is engaged when the input shaft of the gearbox is not rotating and/or
there is no resistance against the blades of the trowel.
■ The brake is released when the input shaft is rotating while there is resistance
on the blades.
Note: If there is no or low resistance against the blades, the brake may not release.
Resistance against the blades allows the brake to release. If the machine is
suspended or on a highly polished, slippery surface, the brake will not release and
the belt could slip.
4.9

Testing the Engine Control Module

Background To prevent uncontrolled spinning of the trowel, the trowel is equipped with an
engine control module designed to shutoff the engine if the operator loses his/her
grip on the trowel handle. The engine control module senses that the machine is
spinning and shuts down the engine. The momentum of the spinning trowel
engages the brake and stops the handle from spinning past 270°.
Procedure Perform the following procedure to test the engine control module.
1. Start the engine.
2. Jerk the handle to the right.
► If the engine stops, the engine control module is functioning.
► If the engine does not stop, repeat the jerking motion until the engine stops. If
the engine still does not stop, push the stop button and turn the engine off. DO
NOT operate the machine until the engine control module is replaced.
WARNING
Personal injury hazard. The uncontrolled spinning of the trowel may cause injury to
the operator and others in the vicinity.
► Do not operate the trowel if the engine control module is disconnected or not
functioning properly.
Walk-Behind Trowels
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