Ford 2013 F-650 Owner's Manual page 177

176
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Specific GCWR and maximum trailer weight applicable to a given
F–650/750 model is dependent on many variables including transmission
capability. Check with your sales consultant for the exact rating on your
vehicle.
ESSENTIAL TOWING CHECKS
Service your vehicle more frequently if you tow a trailer. See your
scheduled maintenance information.
For load specification terms found on the Tire Label and Safety
Compliance Certification Label and for instructions on calculating your
vehicle's load, see Load limit in the Load Carrying chapter.
Hitches
Do not use a hitch that either clamps onto the bumper or attaches to the
axle.
Distribute the trailer load so 10-15% of the total trailer weight is on the
tongue.
Safety Chains
Note: Do not attach safety chains to the bumper.
Always connect the trailer's safety chains to the frame or hook retainers
of your vehicle hitch.
To connect the trailer's safety chains, cross the chains under the trailer
tongue and allow enough slack for turning tight corners. Do not allow the
chains to drag on the ground.
Trailer Brakes
WARNING: Do not connect a trailer's hydraulic brake system
directly to your vehicle's brake system. Your vehicle may not have
enough braking power and your chances of having a crash greatly
increase.
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer's
specifications. The trailer brakes must meet local and federal regulations.
The braking system of the tow vehicle is rated for operation at
the GVWR not GCWR.
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)
Towing