Fisher speed-caser 2 Owner's Manual page 17

RECEIVER HITCH
Safety
Ball Mounts/Drawbars
Select these products by their gross trailer weight and
tongue weight ratings. Select hitches and receivers for
specific vehicles. Do not purchase a ball mount or
drawbar which will give more than a four inch drop or
seven inch extension as measured from the lower rear
edge of the receiver.
Hitch Balls
Select by gross trailer weight rating, coupler socket
size, and mounting platform thickness and hole size.
Hole must not exceed threaded shank diameter by more
than 1/16 inch. Use lock washer. Tighten according to
instructions. When tightened, shank must protrude
beyond bottom of nut. Gross trailer weight rating and
ball diameter are marked on balls.
Trailer Couplers
Important Information on Towing
The coupler socket should be smooth, clean and lightly
lubricated. Tighten or adjust according to the coupler
manufacturer's instructions.
Make sure all operators of your equipment read and
understand this information before towing. This
information will help you properly select, use, and
maintain your towing equipment. Learn the capabilities
and limitations of each part.
Safety Chains
Connect safety chains properly every time you tow.
Cross chains under coupler. Attach securely to the
hitch ortow vehicle so they cannot bounce loose. Leave
only enough slack to permit full turning. Too much slack
may prevent chains from maintaining control if other
connections separate. Do not allow chains to drag on
the road.
Electrical Connections
Make these safety-critical connections every time you
tow, no matter how short the trip. Check operation,
including electric brake manual control, before getting on
the road.
Gross trailer weight is the weight of the trailer plus the
weight of the cargo. Measure gross trailer weight by
putting the fully loaded trailer on a vehicle scale.
Tongue weight is measured by placing the fully loaded
trailer on a level surface with the coupler at normal
towing height. Use a commercial scale to measure the
weight at the coupler.
November 1998
14
Form No.13722