Tmp Gearbox Workshop Manual Top -

The TMP (Thamesway Marine Products) gearbox is widely described in community forums and technical documentation as a robust but complex piece of marine equipment that is generally not DIY-friendly for major overhauls. While simple maintenance like oil changes is straightforward, internal repairs are often cited as being "not for the faint-hearted" due to the precision required during assembly. Technical Manual & Service Insights

1. Locate your gearbox serial number.
2. Visit the official TMP portal or a certified industrial bookseller.
3. Download the official "Top" edition digital file.
4. Print pages 34 (Exploded View) and 89 (Torque Chart) for your tool chest.

Finding the Manual

Because TMP drives are less common than MerCruiser or Volvo, finding the official manual is difficult. It is often labeled under "Toyota Marine Sterndrive Service Manual" or "Yamaha sterndrive manual." tmp gearbox workshop manual top

• Slope Meter: TMP manuals often require measuring the rotating torque of the driveshaft (in N·m or lb-in) using a specialized tool or a string/wrench method to ensure bearings are not too tight (which causes overheating) or too loose (which causes gear whine).
• Shim Selection: Selecting the correct shim thickness for the upper bearing carrier is a mathematical process based on the dimensions of the housing and the bearing height.