Craftsman 0220 - Manual (Page 47)

trailer, inspect all of the welds for cracks or failure at least once a year.
10.2.3 Trailer Connection to Tow Vehicle
10.2.3.1 Coupler and ball
The coupler on the trailer connects to the ball attached to the hitch on the tow
vehicle. The coupler, ball and hitch transfer the towing forces between the
tow vehicle and the trailer. Before each tow, coat the ball with a thin layer of
automotive bearing grease to reduce wear and ensure proper operation; and check
the locking device that secures the coupler to the ball for proper operation.
If you see or feel evidence of wear, such as flat spots, deformations, pitting or
corrosion, on the ball or coupler, immediately have your dealer inspect them to
determine the proper action to prevent possible failure of the ball and coupler
system. All bent or broken coupler parts must be replaced before towing the trailer.
The coupler handle lever must be able to rotate freely and automatically snap into
the latched position. Oil the pivot points, sliding surfaces, and spring ends with
SAE 30W motor oil. Keep the ball pocket and latch mechanism clean. Dirt or
contamination can prevent proper operation of the latching mechanism.
When replacing a ball, the load rating must match or exceed the GVWR of the
trailer.
10.2.4 Jack
If a grease fitting is present, you must use a grease gun to lubricate the jack
mechanism. Grease the gears in the top of hand-cranked jacks once a year, by
removing the top of the jack and pumping or hand packing grease into the gears.
10.2.5 lights and Signals
Before each tow, check the trailer taillights, stoplights, turn signals and any
clearance lights for proper operation.
WARNING
Improper weld repair will lead to early failure of the trailer struc-
ture and can cause serious injury or death. Do not repair cracked
or broken welds unless you have the skills and equipment to
make a proper repair. If not, have the welds repaired by a certi-
fied welder
WARNING
Improper operating taillights, stoplights and turn signals can
cause collisions. Check all lights before each tow. Failure to
heed this warning could result in property damage, serious injury
and death.