Boat Repair & Diagnostics
Diagnostics, mechanical, electrical, fuel and cooling repair for fishing boats, pontoons, runabouts and used trade-ins.
About this service
When something on the boat isn't right, we want to know what's wrong before you do. Our shop runs a full diagnostic pass, then writes a clear estimate before we touch anything. You see the work, and the price, before we start it.
We run mechanical, electrical, fuel-system and cooling-system diagnostics in our Dunnville shop and write the estimate before any work begins.
Repair jobs are logged against the hull so next year's tech already knows what we touched, what we replaced, and what's due.
Won't-starts, overheats and no-spark issues jump the queue during the May–August window. Call us, don't email, when it's urgent.
In a typical boat repair
- Full mechanical diagnostic
- Electrical and fuel system testing
- Cooling system pressure and flow checks
- Itemized written estimate before repair
- Photographic service record
- Outboard, sterndrive and inboard work
What you get with Hartzel
- Written estimates first. No paid work without an itemized quote you sign off on.
- Logged service records. Every job goes against your boat. Next year's tech opens the file and already knows.
- Real parts counter. Tohatsu OEM in stock, plus common parts for Mercury, Yamaha, Honda, Suzuki.
- Factory-trained Tohatsu. Licensed marine technicians, the same crew every season.
- Seasonal knowledge. Winterization by Sept 15, spring slots from March 1. We respect the calendar.
Related services
- Marine Mechanic Licensed marine technicians for diagnostic, repair and seasonal service across most outboard, sterndrive and inboard platforms.
- Outboard Repair Two- and four-stroke outboard service for Tohatsu, Mercury, Yamaha, Honda and Suzuki. Diagnostics, powerhead, lower-unit, fuel and cooling.
- Engine Repair Powerhead, sterndrive, and inboard repair. Fuel, ignition, cooling, electrical and mechanical.
- Battery & Electrical Marine batteries, load testing, alternator and starter work, nav-light and bilge wiring repair.
Locally
- Boat Repair in Dunnville, Ontario Home base. Our shop is on Broad St E.
- Boat Repair in Haldimand County Most of the county is within 30–45 minutes of the shop.
- Boat Repair for Port Dover Boaters ~45 minutes from Dunnville.
- Boat Repair for Welland Boat Owners ~45 minutes from Dunnville.
- Boat Repair for Port Colborne Boaters ~40 minutes from Dunnville.
- Boat Repair for Thorold Boaters ~50 minutes from Dunnville.
- Boat Repair for St. Catharines Boaters ~55 minutes from Dunnville.
Common questions
How long does a typical diagnostic take?
In-season target is 48 hours from drop-off to a written estimate. Out-of-season is usually same-week. Emergency no-starts get priority during the May–August window.
Do you give estimates before you start work?
Always. The diagnostic itself is a one-hour shop-labour charge, and that gets you the diagnosis plus an itemized written estimate. We do not start the repair without your sign-off.
What kinds of boats do you repair?
Outboards, sterndrives and inboards on fishing boats, runabouts, pontoons and aluminum boats. If you are not sure we can help, call us. We will tell you honestly.
Where are you located?
Our shop is at 1066 Broad St E in Dunnville, Ontario. Most customers come from Haldimand, Norfolk and Niagara.
Ready to book?
Call (905) 684-0050 or email the shop about boat repair.