Sleipner EX Series Thrusters — Installation & User Manual

Position

• Exactly on the boat's centre line: stretch a cord from the keel to the bow or stern and slide the position fore and aft along it.
• As far down and forward (bow) or aft (stern) as possible, though 30 cm under the waterline is sufficient.
• The 50 - 51 mm hull hole must not land on a bulkhead; the 80 mm wide metal sheet needs the hole at least 60 mm from the next bulkhead. Measure inside the boat too.
• After mounting, stick the crane operator reference stickers on both sides of the hull – lifting straps must never touch the thruster.

Restrictions

• Bow mounting on high speed or planing boats is not recommended (spray); if done, the bottom edge must be clearly above the planing line.
• Never on the planing surface as a stern thruster; GRP boats from 12 knots: hull construction must comply with the GL guidelines.
• Thrust water flow must not be obstructed (e.g. by the rudder blade), and the flow to rudder and drive must not be affected.
• Never two EX side by side on one axis – the propeller needs free sight to port and starboard.
• Mounting kit Basic: round chine bow/stern, bathing platform, vertical transom. Kit Adapter: round and hard chine bow/stern, bathing platform.

Main Hole & Seals

• Drill the hollow-shaft hole 50 - 51mm with a hand-held drill; mounting bolt holes 18 mm.
• Seals compress about 25% when tightened: total sealing height = hull thickness x 1,25 (30mm hull → 37,5 mm; the manual also prints 40 mm in its first example).
• Coat the underside of the metal sheet with sealant (e.g. Sikaflex) and let it take the hull shape as the nuts are tightened; press the thruster from outside so the seals are not squeezed out.
• Steel or aluminium hulls: always use the isolator instead of the metal sheet, isolate welded mounting bolts with rubber, and check with a multimeter that thruster and hull have no direct connection.
• Adapter on a round chine: mountable within one hour; hard chine within five hours (without electrical installation). Fill any gap with sealant; keep the GRP adapter away from fuel, oil, grease and solvents.
• EX Compact mounts vertically on the transom with the boardlocks 250 and the black plastic spacer; EX Dual is fitted like two Singles, with the hole centre distance exactly per the dimension sheet and an in-plane mounting surface.

Mounting Kits

Operating

1. Switch on the EX main switch.
2. Turn the panel on by pressing both "ON" buttons together (it shuts off after 6 minutes of inactivity).
3. Move the joystick or press the key for the direction you want; stop a little early – the boat keeps moving.
4. Always turn off the main switch when leaving the boat.

• Never run it for more than 5 seconds out of the water, or out of the water with people nearby; let the propeller stop before changing direction in air.
• Continuous runtime approx. 3 minutes depending on water temperature, then the overheat protection stops it until it cools.
• No start: main switch, panel LED, main fuse, motor overheat. Weak: battery charge, corroded connections, minimum voltage 10 V or 21 V not reached, propeller blocked.

Maintenance

• Antifoul with an aluminium primer and copper-free antifouling. High-pressure cleaning is fine (except plastic parts by hand).
• Check the anode at least once a year; change it every season or when half gone, with sealant on the screw.
• Anode: the manual lists 140295 as "kit w/ anode and screw" and 4 1190 as "anode" in one place, and the reverse in another (as printed).
• Propeller: EX 25C/40C/35S/55S/110D → article 50320; EX 55C/70C/75S/95S/180D → article 50321. Fill the space between the plastic disk and the housing seal completely with propeller grease (not between disk and propeller, never on the thread). Main switch off.