# Yanmar

Some 3D designs for the Yanmar engines and saildrives, like ignition key and stop knob, and shim for the saildrive.

## Ignition Key

The metal ignition keys from my 3JH3E engines were corroded and were always reacting with the metal of the lock, regularly binding.
I always keep the key in the ignition so that sailors can rescue my boat in case it starts dragging its anchor, so there is plenty of time to corrode.

I printed a new set of keys from PAHT-CF. This is carbon reinforced nylon. I tried printing first with ASA but that turned out to be too weak.

Be careful here: If the key breaks at an unfortunate moment loss of property or life can occur!

## Stop knob

My engine installation has the mechanical stop knobs that operate via a bowden cable. The T-handles were looking ugly and always mis aligned.
I designed nice round knobs that also cover the (often rusty) nut underneath. I printed them with ASA because they are always outside in rain, spray, and strong UV.
To attach them, it might help if you use a thread cutter first, then use a grip spanner to prevent the stud from turning.

## SD50 saildrive shim

The prop shaft seals of my saildrives started to wear out more quickly. Problem is that the seals worn a groove in the prop shaft, which is a common problem.
If you put this shim in the seal housing first, the seals will shift up a little and start working on a new part of the shaft.
This is a much easier and cheaper solution than buying a new shaft, using a sleeve, or have the shafts welded up and machined afterwards.
I printed these with PETG, which is oil and water resistant. Once installed, there is no force acting on them so they are strong enough.