Rev A 2003215
Boat Fitment
Take care to clear shafts, thru hull fittings, chines, etc. Keel of boat must NOT rest on cross beam and should
clear the beam by at least 1 inch. Center of gravity (CG) of the boat, must be in the the center of the lift
(unless Auxiliary tanks are used) bow to stern and port to starboard. This will evenly distribute the load over
the lift allowing for maximum lift height and maintain the appearance of the lift floating level.
For boats with Auxiliary Tanks - the goal is to have the same lifting forces behind the CG of the boat as in
front, in order to achieve good balance. The simple method for this is to have the same amount of tank for-
ward of the CG of the boat as behind the CG. For Auxiliary tank lifts adjust the 8’ long center tanks to help ac-
complish this. Additional adjustment can be made by shifting the boat fore and aft. The main tanks have a
total tank length of 43’4” of tank for an 8 main tank unit. A 12K lift has an additional 8’ of tank available, the
15K and 18K have 16’ additional each (18K are wider, deeper tanks). The CG of the boat, when located with
the transom at the end of the lift, should never be forward of the Center of the lift. This condition suggests
another set of Main tanks may be needed due to length (if it is over by less than 18” the boat can be shifted
back). If the Auxiliary tank(s) is completely behind the CG of the boat, moving the tank further back amplifies
the lifting effect of the rear (much like moving the smaller child further away from the pivot on a teeter
totter.) If you need to move the Auxiliary tank back further than the end of the lift, be sure you have enough
space available between the outdrives and the tanks to avoid damage to one or the other.
It is the responsibility of the End User to insure that:
The lift is installed by a certified HydroHoist Installer
The lift is operated in a safe manner
Regular inspection is made of the lift components
All safety and warning labels are understood
No alterations or modifications may be made to the HydroHoist equipment without the express written con-
sent of HydroHoist Marine Group. Re-installation, adjusting the bunks, and or adjusting the tank beam spac-
ing of the equipment must be performed to the standards set forth by HydroHoist Marine Group. It is the ob-
ligation of the end user to inform all equipment operators of the above conditions. Owners Manuals and
Safety Warning Decals are available on request from HydroHoist Marine Group.
