: All hull penetrations must be properly sealed with marine-grade sealant and rubber grommets to ensure a watertight fit.
A common mistake is mounting the propeller backwards. The QL manual includes a clear diagram: The propeller’s curved side should face the direction of thrust. Many models use a left-hand or right-hand rotation specific to the tunnel orientation. Ql Bow Thruster Manual
: The thruster motor can be mounted at any angle from 0∘0 raised to the composed with power 90∘90 raised to the composed with power . However, if installed between 45∘45 raised to the composed with power : All hull penetrations must be properly sealed