Outboard Bracket and Trolley Guide

Transom-Mounted Outboard Motor Brackets

A transom-mount outboard bracket is fitted to the transom and carries a secondary or auxiliary outboard motor — typically a smaller electric or petrol kicker used for trolling, manoeuvring in tight spaces, or as a backup if the primary motor fails. The bracket holds the secondary motor in a tilted-up (stowed) position when not in use and allows it to be deployed into the water when needed.

Browse outboard motor brackets at Marine Depot.

Selecting an Outboard Bracket — Key Considerations

Choosing a transom-mount outboard bracket involves several factors that affect which product is suitable for your setup:

• Motor weight rating — the bracket's rated capacity should be checked against the weight of the outboard motor it will carry, including the motor's fuel and any accessories. Check the product's rated capacity carefully and avoid fitting a motor that exceeds it — the bracket, its mounting hardware and the transom should all be appropriate for the combined load. Consult a qualified marine installer if you're unsure whether your transom structure can handle the installation.
• Transom configuration — the bracket needs to suit your transom's height and shape. Standard bracket dimensions assume a particular transom height and engine shaft length. Check the product's compatibility information against your transom dimensions.
• Folding vs fixed — folding brackets allow the secondary motor to be stowed flat or parallel to the transom when not in use, reducing drag and overhang at speed. Fixed brackets hold the motor at a fixed angle. Folding designs add mechanical complexity but are practical for motors that are regularly deployed and stowed.
• Material — marine-grade 316 stainless steel or quality aluminium alloy brackets are the standard for saltwater use. Check the product's material specification for intended marine environment.

Jack Plates — Adjustable Height Mounting

A jack plate is a mechanical or hydraulic bracket that allows the outboard's transom height to be adjusted — raising or lowering the motor relative to the transom while underway or at rest. Raising the motor reduces drag by lifting more of the lower unit out of the water; adjusting height also changes propeller depth relative to the hull, which can affect performance, trim and fuel efficiency depending on the hull type and running conditions. Jack plates are more commonly used on performance bass boats and specialist fishing boats than on typical recreational runabouts. Browse outboard jack plates at Marine Depot.

Outboard Trolleys — Storage and Transport Ashore

An outboard trolley (also called an outboard stand or outboard cart) is a wheeled stand used to store and move outboard engines when they're off the boat. Key uses include:

• Storing an outboard engine in a garage, shed or workshop between uses
• Moving the engine around the workshop for servicing
• Transporting the engine from storage to the ramp

Outboard trolleys are available with various weight ratings, wheel types and clamping/mounting mechanisms. Check the trolley's rated capacity against your engine's weight. Larger outboard motors can be substantial in weight — confirm the trolley's rated capacity covers your engine's actual weight before purchasing, as weight varies by brand and model. Look for a stable base, appropriate wheel size for the surface you'll be moving it on, and a secure clamping or mounting mechanism that holds the engine without risk of tipping.

Outboard Trolley Stability

A key consideration for outboard trolleys is stability — an outboard motor is top-heavy by nature, and a trolley that tips easily creates a significant risk of a very expensive engine falling to the ground. Look for a trolley with a wide base relative to its height and a robust clamping system. On uneven workshop floors or ramp surfaces, larger wheels roll more easily and provide better stability than small casters. Some trolleys include a tie-down point for securing the engine to the trolley for transport.

Steering Tie Bars and Engine Controls

For twin-engine setups, steering tie bars mechanically synchronise the steering of two outboards — when the helm is turned, both motors steer in the same direction. This is particularly important on twin-outboard setups where each motor is independently mounted and needs to track together for correct handling. Check compatibility with your specific engine models and transom configuration. Browse steering tie bars at Marine Depot.

Installation — Seek Qualified Advice for Load-Bearing Fittings

Outboard brackets fitted to a vessel's transom carry significant static and dynamic loads — the weight of the motor at rest, plus the forces generated when the motor is running and the vessel is moving through water or encountering waves. The transom structure, bracket mounting hardware and installation method all need to be adequate for these combined loads. If you have any uncertainty about whether your transom is structurally suitable for a bracket installation, consult a qualified marine engineer or boat builder before proceeding.

Weight Capacity and Motor Compatibility

Outboard motors vary considerably in weight, and checking a bracket or trolley's rated weight capacity against your specific motor's actual weight — not an estimate — is an essential step before purchase. Manufacturer specification sheets list motor weight precisely; relying on this figure rather than a general size category (such as "suits small outboards") gives a more reliable basis for matching equipment to your specific motor.

Maintenance and Inspection

Regularly checking brackets and trolleys for corrosion, wear at moving joints, and secure fastener tightness helps maintain reliable performance over time. Given that this equipment is directly involved in handling a heavy motor, addressing any developing wear or looseness promptly, rather than continuing to use compromised equipment, is a sensible precaution.

Storage of Brackets and Trolleys Between Uses

Storing brackets and trolleys somewhere dry and protected from prolonged sun exposure, rather than left outdoors indefinitely, helps extend their working life, particularly for components with moving parts or rubber wheels that can degrade with sustained UV exposure. Periodically checking stored equipment for corrosion or wear, even when not in regular use, helps ensure it performs reliably when you do need it.

Weighing Up DIY Handling vs Professional Assistance

For larger, heavier outboard motors, some boat owners choose to engage a marine mechanic or fitter for motor removal, transport or bracket installation rather than handling this themselves, particularly if they're not confident managing the weight and handling risk safely. This is a reasonable choice given the genuine physical demands and injury risk involved in handling a heavy outboard motor without appropriate equipment or experience.

Planning Storage Before You Move the Motor

Before choosing a trolley or bracket, think through where the outboard will be moved, stored and worked on when it is off the boat. Workshop floors, garage thresholds, boat-ramp surfaces and uneven storage areas can all change how practical a trolley feels in use. Checking wheel type, handle position, storage footprint and the path between the boat and storage area helps you choose equipment that suits the real handling task, not just the motor's basic weight figure.

How Much Outboards Weigh

Outboard weights vary a lot by brand, model and whether the motor is a 2-stroke or 4-stroke, so always check the specification plate or owner's manual for your motor. As a rough guide, small portable outboards of around 2.5 to 6 hp typically weigh somewhere between 15 and 30 kg, while 15 to 20 hp models are often in the 40 to 50 kg range. Motors above that size quickly become too heavy to lift safely by hand and are normally only removed with a hoist or engine crane. Long-shaft versions of the same motor weigh a little more than short-shaft versions, and the weight on a bracket also includes any attached fuel tank, propeller and accessories.

Lifting and Carrying a Small Outboard Safely

• Use two people for anything you can't lift comfortably on your own.
• Bend your knees and lift with your legs, keeping the motor close to your body.
• Hold the motor by its carry handle and the clamp bracket, not by the cowling or tiller.
• Keep the powerhead higher than the propeller while carrying, so water left in the cooling system drains out of the leg rather than back into the motor.
• Check your owner's manual before laying a 4-stroke outboard down. Most can only be laid on one specific side, and laying them on the wrong side can let oil run into places it shouldn't.

Transporting a Small Outboard

Carrying an outboard in a car or ute is easiest when the motor is upright on a trolley or stand and strapped firmly so it can't tip over. If it has to lie down, lay it on the side the manual specifies, with something soft underneath to protect the cowling. Close the fuel tank vent or drain the fuel from motors with a built-in tank, and drain the carburettor if the motor has a drain screw, to avoid fuel leaking and fumes building up inside the vehicle. Disconnect any portable fuel tank and transport it separately, upright and secured.

Setting an Auxiliary Motor at the Right Depth

An auxiliary motor on a bracket needs its propeller well under the water when lowered, including in chop and when the boat pitches. If the propeller is too high, it draws air and loses thrust; if it is too low, it adds drag and is more likely to hit the bottom. Many brackets have several height positions, so test the motor in the water at each setting and choose the one where it runs smoothly with the boat loaded as normal. Check that the motor can also tilt fully clear of the water when stowed.

Linking a Kicker to the Main Engine

Many trolling and auxiliary motors can be linked to the main outboard with a kicker link kit, a rod that connects the two motors so the kicker turns when you steer from the helm. This saves sitting at the transom to steer the kicker by hand, which is especially useful when trolling for long periods. Check that the link kit suits both motors and that there is enough clearance for the two motors to turn and tilt without touching each other.

Shop Outboard Brackets and Equipment at Marine Depot

• Outboard Motor Brackets
• Outboard Jack Plates
• Steering Tie Bars
• Fuel Lines & Fittings

Related guides: Engine, Fuel & Prop Guides | Boat Fuel Tank Buying Guide | Outboard Fuel Line and Primer Bulb Guide