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Interstate Marine

Inboard service & repair

Inboard engine and propulsion service and repair.

All inboard brands, including sterndrive, transmission and V-drive propulsion.

Inboard repair

From the engine through the drive or shaft to the propeller, we repair inboard propulsion problems. Diagnosis is part of the repair; electronic scans and fault-code review are used where supported by the installed equipment. After service or repair, we verify operation using testing methods appropriate to your boat and the work performed. This may include diagnostic equipment, an appropriate cooling-water supply, and lake testing when needed.

Sterndrive, transmission and propulsion maintenance

  • Sterndrive gear oil changes
  • Drive removal and scheduled inspection
  • U-joint inspection and lubrication where serviceable
  • Gimbal-bearing inspection, lubrication, and replacement where applicable
  • Driveshaft, exhaust, and shift-cable bellows inspection and replacement
  • Shift-cable inspection and adjustment
  • Engine alignment checks
  • Drive-shaft spline lubrication
  • Drive seals and drain-plug gasket service
  • Trim-cylinder and hydraulic-line inspection
  • Marine transmission and V-drive fluid changes
  • Transmission filter or strainer service where equipped
  • Shaft-coupling inspection
  • Propeller-shaft inspection and alignment
  • Strut and rudder inspection

Tell us about your boat

Call with the boat’s make and model, the engine make, model and hours if known, and what you’re noticing. Customers bring their boats to our shop at 8398 S. IH35 Service Rd, Belton, TX 76513.