Short answer: Harbor Marine repairs and maintains boat engines for Lake Lanier owners at the slip, the dock or our Buford shop. Overheating, hard starts and routine service are the most common calls. Call (770) 967-8495.
What Lanier asks of an engine
Lake Lanier is a big lake. The Corps of Engineers counts more than 692 miles of shoreline, so a day out can mean long runs between coves, slow idling through no-wake zones, and hours of sitting with the engine off while everyone swims. Then comes a full-throttle run home. That mix of heat, idle time and hard running is tough on cooling systems and on engines that only get used on weekends.
The engine problems we see most on lake boats come from parts that wore out between trips without anyone noticing.
Overheating on the lake
An overheat alarm far from the dock is the call we hear most. On Lanier the usual causes are a worn raw-water impeller, a stuck thermostat, or an intake that has picked something up. When the lake is down, boats run closer to the bottom in coves and near points, and intakes can pull in sand, silt and debris that would normally be far below.
If the alarm goes off, slow down and shut down when it is safe, let the engine cool, and call us before running it hard again.
Boats that stay in the water
Many Lanier boats sit in a slip from spring to fall. That is convenient, but it means the engine may go a week or two between runs, and fuel, batteries and seals do not love sitting. We often see hard starts after a long sit, weak batteries, and cooling parts that dried out and cracked.
Regular maintenance at the slip keeps that in check. Our mobile service can handle many oil changes, impeller checks and diagnostics without moving the boat.
What we check during service
- Oil and filters changed.
- Raw-water impeller and cooling flow checked.
- Thermostat, housing and gaskets inspected.
- Belts, hoses and clamps looked over.
- Batteries and charging checked.
- Generator serviced on boats that have one.
Long runs and busy weekends
On a summer Saturday, Lanier can be crowded. That means more idling in line at the ramp or the fuel dock, slow speeds through busy coves, and then long open-water runs to get somewhere quieter. Idling in hot weather pushes cooling systems, and stop-and-go running is hard on spark plugs and fuel systems. A pre-season service, and a quick check mid-summer for boats that get heavy use, keep those days from ending early.
Batteries and charging on lake boats
Lake boats run a lot of electrical gear at once: stereo, lights, fridge, bilge pump, phone chargers. A day anchored in a cove with the music on and the engine off can drain a battery that is past its prime. If the boat starts slow after a swim stop, have the batteries and charging system tested before it leaves you stuck.
Shop work and nearby service
Repairs that need the boat out of the water, or a bench and time, come to our shop at 6516 Lanier Islands Parkway in Buford, near Lake Lanier Islands. If the boat cannot easily get there, we can help with boat transport on Lake Lanier. If your boat has a sterndrive, have the drive checked too through sterndrive repair on Lake Lanier.
Owners near the shop can see engine repair in Buford or Flowery Branch. Boaters on the Forsyth side can see Cumming. Our main boat engine repair page covers how we approach every job, or you can contact us.