Quick answer A repower means a new Mercury on your existing hull. For many Kawartha boats with a sound hull and transom, it can be the practical move: you keep the boat you know and avoid replacing the whole package. Motor availability, rigging, hull condition, parts, and...
Quick answer
A repower means a new Mercury on your existing hull. For many Kawartha boats with a sound hull and transom, it can be the practical move: you keep the boat you know and avoid replacing the whole package. Motor availability, rigging, hull condition, parts, and current shop capacity determine the schedule. Build your starting quote at mercuryrepower.ca, then use the written HBW quote and work order for the project-specific timeline.
There is a moment every boat owner on these lakes eventually meets. The motor that has started every spring for fifteen years turns over, coughs, and goes quiet. You drift for a second, and you start doing math.
The math usually frames itself as one question: new boat, or new motor? That is the wrong question, or at least an incomplete one. The real question is whether the hull under you is still good. If it is, you do not need a new boat. You need a repower.
Harris Boat Works has been rigging and repowering boats on the south shore of Rice Lake for three generations. This guide walks through the whole thing: how to tell if your hull is worth it, how to pick the right Mercury, what the install actually involves, and how we handle it. If you would rather skip to a number, build a live quote at mercuryrepower.ca. For a broader overview across the province, our Kawarthas guide covers the local process, and you can check current boat engine repower cost and options on our main repower page.
Why Repower Instead of Buying New
Here is the principle that the whole decision rests on: the hull is the asset, the motor is the wear part.
A 15-year-old aluminum fishing boat with a solid transom and a sound hull is not a boat that needs replacing. It is a boat that needs a new motor. Aluminum hulls do not rot. Fiberglass hulls with sound structure run 30 years and more. What gives out is the motor, and when it does, you have two real options.
Buy new. A comparable new boat-and-motor package means absorbing immediate depreciation, starting a fresh financing cycle, and spending a season learning a hull you do not know yet.
Repower. Put a new Mercury on the hull you already know. You keep the layout that works, the fit-out you have customized, and a boat that has earned your trust. It costs a fraction of new, the warranty resets to a fresh 3-year term, fuel economy improves over an older motor, and the noise drops noticeably.
Most Kawartha boaters who run the numbers land on the repower. A repower typically costs well under a comparable new package. For the full line-by-line cost picture in current dollars, see our Mercury repower cost guide. This guide focuses on the process.
The boaters who regret a repower are almost always the ones who put a new motor on a hull with a soft transom. That is why the transom check comes first, and why we do one before quoting anything.
From request to handover
- Share the boat details. Use the quote builder to explore a repower and submit the service request before dropping off the boat.
- Confirm fit and scope. HBW reviews the hull, intended use, compatible equipment and work required.
- Review the written quote. Confirm the configuration, included work, availability, payment terms and scheduling with HBW.
- Drop off when convenient. Once the service request is complete, drop off anytime, including after hours.
- Installation and checks. HBW completes the approved work and confirms the testing appropriate to the boat and conditions.
- Handover. Review the completed work, documentation and owner instructions before taking the boat home.
Timing depends on the boat, approved work, parts availability and testing conditions. Confirm your schedule with HBW.
Step 1: Is Your Hull Worth Repowering?
Honest answer before anything else. Not every hull should get a new motor.
Signs your hull is worth it:
- Aluminum: solid rivets, no major stress cracks along the keel, a firm transom. Aluminum fishing boats from the 1970s and 1980s were built heavy and they last.
- Fiberglass: no delamination on the hull sides, no soft spots on the deck or floor, no flex when you push hard on the motor bracket.
- The boat is fine and the motor is the problem. That sentence, said honestly, usually describes a repower.
Signs to think twice:
- A soft transom. Push on the motor bracket and feel for give. Give means water has reached the transom core and it is rotting from the inside. A transom repair is non-negotiable before a new motor goes on, and it adds real cost and time to the project. Sometimes it is still worth it. Sometimes it is the start of a longer conversation about the hull.
- Rotten floor or deck. Structural deck rot changes the math. Now you are not repowering, you are rebuilding.
- Several systems failing at once. If the motor, the floor, the wiring, and the fuel tank all need attention together, compare the total against what a clean used boat would cost.
Step 2: Choosing the Right Mercury
This is the decision that anchors everything else.
Start with the compliance notice. On an outboard-powered pleasure craft up to 6 metres, it shows the manufacturer's maximum recommended safe power. Confirm the exact hull documentation, proposed motor weight, transom, steering, and rigging before choosing horsepower. HBW does not use an undocumented oversized setup as the basis for a repower.
Match the motor to how you actually use the boat, not how you might use it someday. Three questions move the answer:
- How many people are regularly aboard? Two anglers and gear is a different load than a family of five and a cooler.
- What water do you run? A calm cottage lake, the open south end of Rice Lake in an afternoon wind, and the Trent-Severn main channel in October are three different answers.
- Are you trolling or running? Walleye trolling and slow panfishing want control at low speed, which points toward a 9.9 ProKicker on the main motor's transom (the ProKicker CT gearcase is a legitimate trolling-motor configuration). Running hard and planing fast points toward more top-end horsepower on a standard gearcase.
Motor Recommendations by Hull Type
| Hull |
HP range |
HBW recommendation |
| 14-16 ft aluminum console |
40-60 HP |
Mercury 60 FourStroke, standard gearcase |
| 16-18 ft aluminum fishing boat |
75-115 HP |
Mercury 90 or 115 FourStroke, 90 for lighter use, 115 for regular full loads |
| 18-20 ft aluminum or fiberglass console |
115-150 HP |
Mercury 115 or 150 FourStroke, standard gearcase (HBW often prefers standard on these planing V-hulls; CT is hull/load/prop specific) |
| 18-22 ft pontoon |
60-115 HP |
Mercury 60-115 Command Thrust (60 CT is the hero pick for 18-20 ft two-log pontoons; 150-class pontoons run the standard gearcase, subject to exact-model specification checks) |
| 19-21 ft bass or tournament boat |
150-250 HP |
Mercury FourStroke for real-world use, Pro XS if you run tournaments |
| 22-24 ft tritoon or large pontoon |
150-200 HP |
Mercury 150-200 FourStroke or Pro XS (standard gearcase; confirm the exact model and gearcase) |
FourStroke or Pro XS?
The FourStroke is the everyday motor: quiet, fuel-efficient, and built for recreational use from sunrise to dock. It is the right choice for the large majority of Kawartha repowers. The Pro XS trades some fuel economy for a harder hole-shot and higher top end. It earns its price for tournament anglers and people who really do run their boat hard. When in doubt, the FourStroke. Our FourStroke buyer guide goes deeper on the families.
Step 3: What Else Goes on the Bill, Beyond the Motor
The motor is typically the single largest share of a repower's total cost. The other third is what the motor needs to actually run on your boat, and it is where budgets get surprised. You do not need exact prices to plan, you need to know what drives them.
| Item |
What it covers |
What drives the cost |
| Controls |
Throttle, shift, cables, control box |
Mercury-to-Mercury is the cheap path. A brand conversion or a digital-controls upgrade costs more. |
| Steering |
Cable, hydraulic, or power-assist |
Cable steering is fine up to about 115 HP. Hydraulic is required at 150 HP and above. |
| Propeller |
Aluminum or stainless |
Aluminum suits most installs up to 115 HP. Higher-HP motors usually want stainless. |
| Gauges and SmartCraft |
Digital display and wiring |
Older boats with aged wiring cost more to bring up to a clean digital setup. |
| Battery and harness |
Battery, fuse panel, connectors |
Boat age drives this. Older electrical systems need more replaced. |
| Labour |
Shop time for the install |
Current rigging, hull condition, parts availability, and project scope determine the schedule. The written quote and work order control. |
| Acceptance check |
Shop checks and, when conditions allow, an on-water test |
The scope follows the motor, hull, rigging, safe seasonal conditions, and work order. Any alternate acceptance plan is documented before pickup. |
For the actual dollar ranges in current Canadian pricing, the repower cost guide has the full breakdown, and the configurator at mercuryrepower.ca builds a real number for your exact motor.
The brand-conversion cost. Switching from Evinrude, Yamaha, or Honda to Mercury means the existing controls, gauges, and sometimes the wiring harness will not carry forward. The systems do not speak the same language. That conversion is real money, but it is a one-time cost. Every repower after the first one is Mercury-to-Mercury, and the rigging bill drops.
Step 4: The Hull Walk-Around and the Quote
Before HBW approves a repower configuration, the boat and project details are assessed. The exact inspection scope depends on the hull, transom, current motor, rigging, and information available. Here is what the assessment covers:
- Transom. Moisture meter, plus a hands-on push on the motor bracket. A firm transom is what you want to hear. A soft reading means a transom conversation before the motor conversation continues.
- Floor and deck. We walk it. Soft spots mean water intrusion, sometimes cosmetic, sometimes structural.
- Wiring. Old wiring does not always play well with a new motor. We check what can stay and what needs replacing.
- Fuel system. A 15-year-old tank and lines that have run ethanol-blend fuel get flagged. Fuel problems found after the new motor is on are expensive and preventable.
- Controls and gauges. We assess what stays, what adapts, and what gets replaced, so there are no surprises at pickup.
Then we build a line-item quote. Motor, rigging, prop, labour, HST, all visible before you decide. No "call for pricing," no estimate that quietly grows by pickup. If something changes mid-job, a surprise behind the dash or a fuel line that needs replacing, we call before we proceed. You can build the starting quote yourself at mercuryrepower.ca in a few minutes. The walk-around adds the hull-specific items on top.
Ready to see real numbers for your boat? Build your repower quote with live Canadian pricing in about two minutes, then a person at HBW reviews it before you hear back. Pickup only at Gores Landing.
Step 5: Ordering and Lead Times
Once the quote is signed, we order from Mercury Canada. As a rough guide for 2026: common motor sizes that are in stock move quickly, special configurations take longer, and high-horsepower V8s can take several weeks depending on supply.
The best time to order is October through March. Off-season orders get first pick of Mercury Canada inventory, the shop has availability, and the boat is ready when the water opens. Every spring the phone rings in April with someone hoping for a May delivery. Sometimes we make it happen. Sometimes we cannot, and nobody wants to miss the start of the season because they waited. If you are reading this in spring and planning for this season, call today.
Step 6: The Install and Acceptance Check
The schedule depends on the hull, current controls, rigging, parts, and any issues found after disassembly. The written work order is the reliable timeline. A typical installation sequence includes:
- Old motor removed, lower unit and transom inspected
- New motor mounted to the transom
- Controls connected and routed: cables, harness, throttle, shift
- Fuel line plumbed
- Gauge and SmartCraft connections made
- Prop installed and torqued
- Cooling system and oil levels confirmed
- First-start sequence completed in the shop
- On-water checks on Rice Lake when safe seasonal conditions allow, with the scope matched to the motor, hull, rigging, and work order
- Customer receives the information needed to confirm any required Pleasure Craft Licence update
Photographed in our Gores Landing shop. It shows our own service work, not the specific job described above.
Before pickup, HBW documents the acceptance checks completed for the specific job. When safe seasonal conditions allow, that can include an on-water check on Rice Lake; otherwise, the alternate acceptance plan is documented with the customer. Transport Canada says licence information must be updated within 30 days when listed information changes. The boat owner remains responsible for the licence, and a dealer needs the owner's authorization to apply on their behalf. See our Pleasure Craft Licence update guide and confirm the current requirement for your boat.
As checked September 5, 2026, new, transferred and renewed Pleasure Craft Licences are valid for five years. Older licences have their own expiry date or transition deadline; check your licence with Transport Canada. The current fee is $24.41 for a new, transferred, renewed or duplicate licence, while updates and cancellations are free. Fees may change each April 1.
Step 7: Pickup, Warranty, and Service
You pick up a boat with a 3-year Mercury limited warranty on the new motor. It covers manufacturing defects and is honoured by any authorized Mercury dealer across Canada. HBW also runs seasonal Mercury promotions through the year, so check the promotions page for what is current when you book.
For most current recreational Mercury FourStrokes, scheduled service is due annually or every 100 hours, whichever comes first. The exact oil, filters, plugs, gearcase, water-pump parts, and inspections come from the manual for the serial number. Water-pump service is commonly part of an expanded interval around 300 hours or three seasons, but model and operating conditions control the actual timing.
A word on protecting your warranty. Mercury warranty claims require documentation of proper maintenance, so keep your service records. Running the wrong prop pitch, neglecting annual service, or using the motor outside its rated application can create warranty problems, and in some cases insurance and liability problems too. None of that is exotic. It is the ordinary care any motor needs, and it is one more reason we test the prop before you leave the dock.
HBW services Mercury and MerCruiser. Book at hbw.wiki/service. The most efficient slot is fall: combine annual service with winterization in one appointment, everything sorted before the motor sits for the cold months.
What We See at HBW
Three generations of repowering boats on these lakes teaches you the pattern. The repowers that go smoothly and stay smooth are the ones where the hull got an honest look first. The ones that turn into headaches are almost always a good motor bolted to a hull that was hiding a soft transom or tired wiring.
So we lead with the walk-around, and we tell you what we find even when the finding costs us the job. We would rather lose a motor sale than put a new Mercury on a hull that is going to give you trouble two seasons from now. A repower done right should give you ten or fifteen years of starting on the first turn. That only happens when the boat under the motor is sound.
Common Mistakes
Skipping the transom check. The most expensive repower mistake there is. A new motor on a soft transom is money spent on a countdown timer.
Buying the minimum horsepower to save money. Underpowering a hull for real-world Kawartha use, full loads and afternoon wind, is a decision people regret by August. Match the motor to how you actually boat.
Carrying over a tired prop. The prop is what turns horsepower into performance. A wrong or worn prop quietly costs you speed, fuel, and hole-shot. Prop verification follows the specific motor, hull, rigging, work order, and safe seasonal testing conditions.
Waiting until spring to plan. Spring is a busy installation period. Planning earlier gives the dealer more time to confirm motor availability, rigging requirements, and a realistic shop window, but no order date guarantees an opening-day handoff.
Treating electronics as a "later" job. Gauges, fish finders, and chartplotters are far cheaper and cleaner to sort at install time than to retrofit around a finished dash.
A Few Kawartha-Specific Notes
Not every repower guide is written for this water. A few things specific to where we are:
Wind. Rice Lake, the Trent-Severn connecting lakes, and the wider Kawarthas all carry open-water exposure. Rice Lake's long east-west fetch builds real chop in an afternoon west wind. Adequate horsepower is not about ego or top speed. It is about running home safely in conditions that develop faster than they looked at 8 AM.
Shallow water and weeds. Most Kawartha fishing happens in 8 to 17 feet with heavy summer weed growth. Modern Mercury FourStrokes run cleaner in weedy water than older carbureted two-strokes.
The Trent-Severn. If you run the locks, the navigation season runs roughly mid-May through mid-October. Motors on the system want reliable mid-range cruise and a quiet idle for lock approaches. A properly matched FourStroke handles all of it. Our Trent-Severn boating guide covers the rest.
Walleye trolling. If you fish Rice Lake for walleye, plan a ProKicker into the repower rather than as a someday add-on. Adding it later costs more and means undoing wiring we already ran.
Financing
HBW arranges Canadian financing through DealerPlan, primarily with TD Auto Finance. As of August 8, 2026, the TD "Always On" offer is 5.48% APR on approved credit through December 31, 2026. The contract term is up to 60 months, with amortization up to 240 months; a balance may remain due at contract maturity when the amortization is longer. The minimum financed amount is $5,000 CAD, and a $349 DealerPlan fee applies after HST. Check current financing terms before relying on any rate or payment estimate.
Trade-in credit on your old motor, even a dead one, reduces the amount you finance.
Ready to Repower?
Start at mercuryrepower.ca for live pricing on every Mercury we sell, real Canadian dollars, a few minutes to build a quote.
Phone: 905-342-2153
Address: 5369 Harris Boat Works Rd, Gores Landing, ON
Configurator: Build Your Quote
Service: hbw.wiki/service
Keep reading
Sources
- Transport Canada, Pleasure Craft Licence: tc.canada.ca/en/marine-transportation/pleasure-craft-licensing
- Mercury Marine: FourStroke and Pro XS outboard ranges
- Mercury Marine, owner's resources and maintenance schedules: mercurymarine.com/us/en/service-and-support/owners-resources
- Parks Canada, Trent-Severn Waterway operating season: parks.canada.ca/lhn-nhs/on/trentsevern
Process details and recommendations are current as of August 2026. Pricing changes through the year, so build a current quote at mercuryrepower.ca and confirm the details for your boat with HBW.
About the Author
Jay Harris helps run Harris Boat Works, a third-generation family marina in Gores Landing on Rice Lake, established in 1947. HBW is a Mercury Marine Premier Dealer and Legend Boats dealer serving Rice Lake, the Kawarthas, and Ontario boaters who want straight answers before spending real money. Read Jay's full bio.
