How much does the lower unit weigh on a Yamaha 200 HPDI two-stroke?
I need to remove the lower unit from my Yamaha 200 HPDI two-stroke. Roughly how much does it weigh, and is it manageable for one person with the propeller removed?
Answer
Allow about 25 to 30 kg (55 to 66 lb) without the propeller for a complete Yamaha 200 HPDI lower unit, as a handling estimate rather than a verified Yamaha specification. Weight depends on the gearcase and shaft version, so weigh your assembly for an accurate shipping weight or lifting figure.
Identify your 200 HPDI
Record the full model code and serial number from the identification plate on the transom bracket. The 200 HPDI name alone does not identify every component. Yamaha offered different engine families and shaft lengths, and a previous owner may have fitted a replacement gearcase.
Distinguish the conventional 2.6-litre 200 HPDI from the larger-displacement VZ200 HPDI models. A lower unit advertised as fitting a "Yamaha 200" may be a different assembly.
- Model and serial number: use these to identify the original lower-unit assembly in the Yamaha parts catalogue.
- Shaft length: check whether yours is the 20-inch or 25-inch version, or another specified configuration.
- Rotation: identify standard or counter-rotation, especially on a twin-engine installation.
- Replacement history: check invoices or identifying marks if the gearcase has been changed.
These details matter more for compatibility than a difference of a few kilograms. They also help you avoid using a weight quoted for a different assembly.
What the weight includes
A complete lower unit normally means the aluminium gearcase with its gears, bearings, propeller shaft, vertical driveshaft, shift shaft and water-pump assembly. An empty gearcase housing weighs considerably less. A seller's figure for a bare casing is therefore unsuitable for planning removal.
A stainless-steel propeller can add several kilograms, and its position makes the assembly harder to balance. Remove it before lowering the gearcase, then check behind the thrust washer for fishing line.
Gear oil adds less weight, but still counts when weighing a parcel. Check whether the carrier requires the unit drained, then weigh the lower unit with its actual packaging. A timber cradle or crate can add substantial weight.