If you have lost your paper manual, QL typically provides PDF downloads on their official website or via marine parts distributors like ASAP Supplies or MarinePartsEurope.
Manual specifies the distance between the propeller tip and the tunnel wall. For QL models, the gap must be less than 1.5% of the propeller diameter . Too large a gap reduces thrust by up to 40%. Ql Bow Thruster Manual
: Avoid abrupt, constant movements. Excessive continuous use can lead to overheating . 3. Maintenance and Troubleshooting If you have lost your paper manual, QL