Repair & maintenance guides
Plain-English, step by step, written for owners. Pick your engine to see the guides that apply to it.
509 guides · page 19 of 22

Selling Your Boat: Broker, Private Sale, Consignment or Dealer Trade-In
Compare the four ways to sell a used boat (yacht broker, selling it yourself, dealer consignment and trade-in) on cost, effort, speed and risk, then handle the listing agreement, buyer scams, sea trial and survey etiquette, deposit and closing the right way. Practical help, not legal or financial advice.

Set Up Your VHF Radio: MMSI, DSC, GPS Hookup and Radio Checks
Get a free or low-cost MMSI number, program it into your DSC radio, connect your GPS so a distress alert sends your exact position, check the antenna, and learn the Channel 16 rules and the right way to do a radio check.

Shallow-Water Anchor Care: Power-Pole, Minn Kota Talon and Raptor Maintenance and Troubleshooting
Keep a shallow-water anchor deploying and holding: rinse it the way its maker recommends, inspect the spike and pivot bolts, check hydraulic fluid on pump models, keep the fuse, wiring and pump dry, update the software, know how to stow it by hand and get it ready for winter. Internal pump, circuit board and cylinder repairs go to an authorized service center.

Sharing a Boat: Co-Ownership Agreements, Partnerships and Boat Club Alternatives
How to share a boat without losing a friend: choosing a partner, what a written agreement should cover (shares, costs, scheduling, maintenance standards, insurance, title, decisions and the exit), how to handle the inevitable disagreements, and when a boat club, rental or peer-to-peer option makes more sense. Practical guidance, not legal or tax advice.

Shipping a Boat with a Professional Transporter: Quotes, Vetting, Prep and Claims
Most boat shipments go fine, but when they don't, the owner who checked the carrier's authority and insurance, prepped the boat properly and documented everything at pickup and delivery is the one who gets paid. Here's how to hire a transporter, prepare the boat and handle damage.

Shock-Absorbing Boat Seats and Pedestals: Choosing, Installing and Adjusting
Pounding through chop hurts backs and necks, and hard wave impacts can fracture a spine, especially up front. Learn the difference between a shock-absorbing pedestal and a suspension seat base, how to mount one solidly, how to set it for the rider's weight, and the simple care that keeps it working, plus the seating and driving habits that matter just as much.

Shore Power Adapters and Y-Splitters: When a 30A or 50A Adapter Is Safe, and When It Isn't
Pigtail adapters and Y-splitters let a boat plug into a pedestal that doesn't match its inlet, but the wrong one, or the right one used carelessly, can overheat, trip the marina's ground-fault protection or start a fire. Learn the difference between 30A 125V, 50A 125V and 50A 125/250V, which adapters are reasonable, how to keep loads safe, and how to check connections for heat.

Shore Power Cord Ends: How to Judge a Cord, and When to Replace the Plug or the Whole Cord
Burned blades, a hot plug or a cracked locking ring don't always mean a brand-new cord, but sometimes they do. Learn how to inspect a shore power cord and its ends, decide between a replacement end and a new cord, what a proper sealed marine connector looks like, which parts of the job are safe for an owner and when the work belongs to an ABYC-certified electrician, plus the habits that make cord ends last.

Shore Power Inlet and Cord Upgrades: Burned Plugs, Better Connectors and Safe Adapters
Why shore power plugs and boat inlets overheat and burn, how to spot an inlet that needs replacing, what newer connector designs offer, and how to choose, size and care for cords and adapters. You inspect and buy the right cord; an ABYC-certified marine electrician replaces the inlet and its wiring.

Shore Power Safety: Cords, Inlets, Burned Plugs and Electric Shock Drowning
An owner's inspection routine for your shore power cord, plugs, boat inlet, galvanic isolator and ground-fault protection, plus the right way to plug in and the facts about Electric Shock Drowning. This guide is for looking and testing only; any electrical repair belongs to an ABYC-certified marine electrician.

Single-Line Reefing: Converting Slab Reefing and Leading Reef Lines to the Cockpit
Decide between two-line and single-line reefing, plan the blocks, clutches and line lengths, keep friction low enough that one person can actually pull the reef in, and test the new setup at the dock before you need it in a blow.

Small Portable Outboard Care (2.5 to 20 hp Kickers and Dinghy Motors)
Keep your dinghy motor or kicker starting on the first few pulls. Use fresh fuel, flush it, run the carburetor dry before you put it away, carry and lay it down on the correct side so oil doesn't flood the cylinders, and check the shear pin or prop, gear oil and engine oil on schedule.

Smelly Head Hoses: How to Test, Choose and Replace Sanitation Hose
Find out if your toilet and holding-tank hoses are the source of that sewage smell with a simple hot-rag test, then pick the right sanitation hose, route and clamp it properly, and get rid of the old hose cleanly.

Smoke and Heat Detectors on a Boat: Where They Make Sense, What to Buy and How to Test
A fire in a closed cabin, engine room or lazarette can grow for minutes before anyone notices. Learn where smoke alarms and heat detectors make sense aboard, why boats are hard on household alarms, how to power and test them, how they fit with CO alarms, and how automatic engine-room extinguishers and engine shutdown tie in.

Spiders, Wasps and Insects on Your Boat: Prevention and Safe Cleanup
Why boats attract spiders, mud daubers, wasps and swarming lake insects, how to clean webs and droppings without harming gelcoat or canvas, and how to keep nests out of the vents, telltales and fittings your boat needs to breathe.

Spring Commissioning - Getting Your Boat Ready for the Season
Wake your boat up after storage with a step-by-step check of the battery, fuel system, engine, drive and safety gear. Catching a cracked hose or dead battery in the driveway beats a tow on opening weekend, and saves a typical shop commissioning fee.

Spun Prop Hub - How to Tell, Quick Marker Test and Repair Options
If the engine revs up but the boat barely accelerates, the rubber or plastic hub inside your propeller may be slipping. Learn how a spun hub feels, how to confirm it with a simple marker test, the difference between pressed rubber hubs and replaceable hub kits, and your repair options.

Start Isolation for Your ACR: Stop the Chartplotter and Stereo from Rebooting at Engine Start
If your plotter, radio or stereo reboots every time you turn the key even though you have two batteries and an automatic charging relay, the relay may be tying the house battery into the cranking dip. Learn how start isolation and dual-circuit battery switches keep the electronics on their own battery, how to find and test the start-only wire, and what to check after the job.

Stepping and Unstepping a Sailboat Mast: Trailer Sailers and Yard Cranes
How to raise and lower a sailboat mast safely, whether you step a trailer sailer's mast at the ramp or help the yard crane do it, including power-line checks, mast wiring, basic tuning afterward, and when to leave the job to the yard.

Sterndrive Corrosion: Paint Blisters, Anodes, MerCathode and Galvanic Isolators
Learn to spot the early signs of corrosion on an aluminum sterndrive, check the anodes and the MerCathode or Volvo Penta ACP system, and understand when a galvanic isolator or a hull potential test is needed. Caught early, corrosion costs a few anodes; caught late, it can cost the whole drive.

Sterndrive Hard or Clunky Shifting: Cables, Shift Interrupt Switch and Cone Clutches
A sterndrive that bangs into gear, is hard to pull out of gear, stalls when you shift or hesitates and then slams in is telling you something about its shift system. Learn the checks you can do (idle speed, technique, cables, linkage and drive oil), what the MerCruiser shift interrupt switch and Volvo Penta cone clutches do, and when it's a shop job.

Sterndrive Power Steering Hoses and Fluid Cooler: Inspection and When to Replace
Learn to spot the early signs of a failing power steering hose or fluid cooler on a MerCruiser, Volvo Penta or similar sterndrive or inboard, from rusty crimped hose ends and red fluid in the bilge to a cooler that leaks fluid overboard or lets water into the system. Inspection is an owner job; replacement is usually for a pro.

Sterndrive Power Steering: Fluid Checks, Hard Steering and Leaks
Troubleshoot the engine-driven power steering on a MerCruiser, Volvo Penta or similar sterndrive or inboard, from the free checks (fluid, belt, cable) to the signs that the pump or actuator needs a pro. Steering that suddenly goes heavy at speed is a safety problem, not a comfort problem.

Stiff or Seized Mechanical Steering - Lubricate, Inspect and Replace the Steering Cable
Fix hard, notchy or loose cable steering on an outboard boat. Find out whether the engine, the tilt tube, the cable or the helm is the problem, clean and grease what can be serviced, and measure and install a new cable correctly when the old one is done.
Safety: BoatMend is for information only and does not replace a certified marine technician. You are responsible for your safety and your boat. Read the full disclaimer.