$20.00
The SST-45 Gear Case Repair & Rebuild Manual is a technical reference for servicing, repairing, and rebuilding the specialized lower unit used in SST-45 / Formula Light tunnel boat racing.
Designed for racers, engine builders, and mechanics, this manual provides valuable guidance for disassembly, inspection, service, and reassembly of the SST-45 gearcase.
Whether you’re diagnosing a gearcase problem, replacing internal components, or performing a complete rebuild, having the proper repair information can help prevent costly mistakes and improve reliability on race day.
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The SST-45 Gear Case Repair & Rebuild Manual is a valuable technical reference for racers, mechanics, and engine builders working with the specialized gearcase used in SST-45 / Formula Light tunnel boat racing.
The SST-45 lower unit operates under demanding racing conditions, including sustained high RPM, repeated acceleration, tight cornering, and continuous load. Proper inspection, assembly, and maintenance are critical to keeping the gearcase reliable and helping prevent failures that can end a race weekend.
This manual provides the information needed to better understand the SST-45 gearcase and properly approach repair, service, inspection, and rebuilding.
The SST-45 gearcase is not simply a standard recreational outboard lower unit.
Race gearcases operate under significantly different conditions and require careful attention to:
Incorrect assembly or overlooking a worn component can lead to premature gearcase failure, damaged gears, bearing damage, oil leakage, water intrusion, or complete lower unit failure.
Using the proper technical reference can help reduce guesswork during a repair or rebuild.
A gearcase should be inspected when you notice symptoms such as:
Finding these problems early can often prevent a smaller repair from becoming a much more expensive gearcase failure.
The SST-45 Gear Case Repair & Rebuild Manual is especially useful when performing a complete lower unit teardown and rebuild.
A typical rebuild may involve inspection or replacement of components such as:
Having a proper service reference available while the gearcase is disassembled makes it easier to keep track of component locations, inspection points, and correct assembly procedures.
Routine inspection is especially important after:
Race teams may also choose to inspect or refresh the gearcase during the offseason even when no obvious problem is present.
One of the easiest ways to monitor gearcase health is to inspect the gear lubricant when it is drained.
Watch for:
Metallic particles
A small amount of fine metallic material may occur through normal wear, but excessive metal, flakes, or larger particles can indicate gear or bearing damage.
Milky gear oil
Milky or cloudy lubricant usually indicates that water has entered the gearcase and the seals or sealing surfaces should be inspected.
Burned or unusually dark oil
Discolored lubricant may indicate excessive heat or internal friction.
Low oil level
A low lubricant level may indicate a leak and can quickly lead to bearing and gear damage.
This manual is an excellent resource for:
Keeping a copy available in the race shop or trailer provides a useful reference whenever a gearcase needs to be inspected or repaired.
At Liquid Revolutions, we know that lower unit reliability can determine whether you finish a race or spend the weekend repairing equipment in the pits.
The gearcase operates under heavy load every time the boat is on the water, and seemingly minor wear can quickly become a major problem at racing speeds.
Proper maintenance, inspection, and rebuilding practices help reduce the chance of unexpected failure and make it easier to identify problems before race day.
Whether you’re servicing your primary race gearcase, rebuilding a spare lower unit, or learning how the SST-45 gearcase is assembled, the SST-45 Gear Case Repair & Rebuild Manual is a valuable reference to keep in your race shop.
