Greetings Steve.
One of the commoner DIY routers east of the Atlantic and west of the Pacific. Dedicated plunge router, no fixed base option.
Yours looks in nice clean condition.
The router is raised as far as it can go, with the given settings.
it will raise a bit further (perhaps 1,5 cm) if you rotate the stepped turret against which the depth-stop rod is abutting (you can rotate it three or four clicks before returning to the present position.
Thereafter, there is not much further travel possible - if you look at the collet from the top of the table, it will be pretty close to the top. It is not designed to protrude through the table top - the bit will protrude to the desired extent.
Probably a good idea to fix the lift mechanism to the shelf on which it rests (if not already fixed). The lowermost part of the router has some bumps (visible in the photo) - may move on the lift plate during use.
If I remember correctly, that model has some ventilation holes between the bumps - if so, do not try to place a rubber pad or some such, between the router and the lift plate.