Technical writer for training manual/operating proceedures

We are small niche adventure activity provider. We want to formalise our training and operations proceedures in order to expand our business.
We require someone to help write and format our training manual and operations proceedures.
We will provide the majority of the specialised copy therefore we will need someone who is experienced in technical manual writing to turn it into a cohesive document.
The final manuals will need to be understood by novices.