Harken 7801 4-Point Storage System - 60 lb - Manual (Page 6)

6
STEP 1B
1) Measurement between
center points on
mounting boards _________
(calculation above)
STEP 5A
2) Measurement from center
of front mounting board
to front wall _________
3) Measurement from front
mounting board to
lowest drop point _________
If measurement 2 is less than
measurement 3, refer to
Step 5A, Diagram 12 (page 7).
Garage door
Front
wall
Step 1B
Mounting board
placement
Step 5A
Welded screw eye
placement Ceiling
Plan location of mounting boards and welded screw eye
2
3
1 Front mounting board
Back mounting board
Top plate
DIAGRAM 3. Distance of mounting boards from front wall is important, as it affects the position of the welded screw eye in Step 5A (page 9).
DIAGRAM 2. Center object under mounting points.
Position mounting boards so lifted object is balanced.
STEP 1 CONTINUED: DETERMINE HOISTER LOCATION; RAFTERS RUNNING FRONT-TO-BACK
WARNING! Do not screw into laminated rafters.
They are not intended to accept fasteners. Consult
rafter maker for recommendations. Screwing into
laminated rafters may considerably weaken system,
causing load to fall and cause an accident.
B. PLAN LOCATION OF MOUNTING BOARDS
Mounting boards are used to position Hoister
directly above object to be lifted.
7806 Hoister (200 lb/91 kg system) requires
mounting boards to span minimum three rafters.
Note: Mounting boards may not be necessary for
installation in ceiling with exposed rafters. In ceilings
with exposed rafters, system can be installed on
rafters. Position Hoister directly above object to be
lifted. If installing without mounting boards, go to
Step 3 (page 8).
DISTANCE BETWEEN MOUNTING BOARDS
Distance between mounting boards should be
35% of the object's length.
Exception: Distance between mounting boards for long, light weight
canoes/sea kayaks will be less than 35% of the object’s length.
Calculate distance between mounting boards using formula
or chart below.
_________________ x .35 = _________________
Object length 35% Mounting distance
(page 9).
Tip: The distance does not have to be exactly 35%.
Greater distance is okay and distance for long canoes
and sea kayaks can be less as stated above.
LOCATE CEILING MOUNTING BOARD POSITION