BoatMend

Repair & maintenance guides

Plain-English, step by step, written for owners. Pick your engine to see the guides that apply to it.

437 of 509 guides · page 16 of 19

Hull & systemsModerate

Rudder, Rudder Bearings and Steering Gear Inspection (Sailboats and Inboards)

Check your rudder for play, water inside the blade and stock corrosion, inspect the rudder tube and its seal, and go over cables, sheaves, quadrant and stops so the steering does not fail when you need it. Includes how to find, fit and practice with the emergency tiller.

2 h All engines Shop: $300-1500
ElectricalEasy

Running a Boat Generator at the Right Load: Switching Sequence, Balancing and Avoiding Wet Stacking

Get more life out of your marine generator by starting and stopping it with the AC loads off, switching sources in the right order, keeping it loaded enough to avoid wet stacking and carbon buildup, and moving small loads to the inverter. Includes a simple monthly exercise routine.

1 h Marine diesel, Gas inboard
Routine serviceModerate

Salt and Scale in Raw-Water Cooling: Flushing Habits, Descaling and When It's a Shop Job

Learn how salt and scale slowly narrow your engine's cooling passages, how to spot the warning signs (a temperature that creeps up over seasons, a weak telltale, thermostats sticking), the flushing habits that prevent it, which descaling products and methods engine makers accept, what never to pour through an engine, and when to hand the job to a shop.

1 h Outboard, Sterndrive (I/O), Gas inboard, Marine diesel Shop: $150-900
Buying & ownershipModerate

Salvage and Branded Title Boats: What They Mean, the Risks, and How to Check Before You Buy

Understand boats that an insurer declared a total loss: what salvage, rebuilt and hull-damaged title brands mean, why flood and storm boats hide expensive problems, how branded titles affect insurance, financing and resale, how to dig into a boat's history, and what a survey should check. Title branding rules differ a lot by state, and some states don't brand boat titles at all.

3 h All engines
ElectricalModerate

Satellite Internet on Your Boat: Starlink Plans, Mounting, Power and Wiring

An owner's guide to putting Starlink aboard: which plans allow coastal, offshore and in-motion use (as of October 2026), how much battery it eats, 12-volt versus inverter power, where to mount the dish, and how to route and seal the cable without leaks.

4 h All engines Shop: $300-1500
SafetyEasy

Satellite Messenger vs PLB vs EPIRB: Which Emergency Device Should You Carry?

A PLB or EPIRB calls government search and rescue through the 406 MHz Cospas-Sarsat satellites with no subscription; a satellite messenger like an inReach or SPOT sends an SOS through a private network and adds texting and tracking for a monthly or yearly fee. Learn how each one alerts rescuers, what registration, subscriptions and batteries they need, what to carry for lakes, coastal and offshore boating, and how to test without causing a false alarm.

30 min All engines
SafetyEasyDraft

Seasickness: How to Prevent It and Care for Seasick Crew and Guests

Almost anyone can get seasick in the right conditions, but a few habits make a big difference. Learn why it happens, where to sit, what to eat and drink, how over-the-counter remedies fit in (and why the person running the boat must be careful with drowsy ones), how to look after someone who's sick, and when it might be something more serious. General information only, not medical advice.

10 min All engines
Buying & ownershipEasyDraft

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.

2 h All engines
SafetyEasy

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.

1 h All engines Shop: $150-500
Buying & ownershipEasy

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.

2 h All engines
Buying & ownershipModerate

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.

4 h All engines
ElectricalEasyDraft

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.

30 min All engines
ElectricalModerate

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.

1 h All engines Shop: $100-600
ElectricalModerate

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.

45 min All engines Shop: $300-800
ElectricalEasy

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.

30 min All engines Shop: $150-500
Routine serviceEasy

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.

1 h Outboard Shop: $150-350
Hull & systemsModerate

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.

5 h All engines Shop: $400-1500
SafetyEasy

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.

1 h All engines Shop: $100-1500
Hull & systemsEasy

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.

1 h All engines
SeasonalEasy

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.

3 h Outboard, Sterndrive (I/O), Gas inboard Shop: $200-500
TroubleshootingEasy

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.

45 min Outboard, Sterndrive (I/O) Shop: $50-200
ElectricalModerate

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.

2 h Outboard, Sterndrive (I/O), Gas inboard, Marine diesel Shop: $150-600
Hull & systemsModerate

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.

1 h Sterndrive (I/O) Shop: $150-600
TroubleshootingModerate

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.

1 h Sterndrive (I/O) Shop: $300-2500

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.