Trailer Hitches; Connecting A Trailer - Subaru Legacy 2021 Owner's Manual

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Trailer Towing (Outback)
The tongue load can be weighed with a
bathroom scale as shown in the following
illustration. When weighing the tongue
load, be sure to position the towing coupler
at the height at which it would be during
actual towing, using a jack as shown.
F: Front
The tongue load can be adjusted by proper
distribution of the load in the trailer. Never
load the trailer with more weight in the
back than in the front; approximately 60%
of the trailer load should be in the front and
approximately 40% in the rear. Also,
distribute the load as evenly as possible
on both the left and right sides.
Be sure that all cargo is firmly secured to
prevent a change in weight distribution
while driving.
& Trailer Hitches
WARNING
Never drill the frame or under-body
of your vehicle to install a commer-
cial trailer hitch. If you do, danger-
ous exhaust gas, water or mud may
enter the passenger compartment
through the drilled hole. Exhaust
gas contains carbon monoxide, a
colorless and odorless gas which is
dangerous, or even lethal, if inhaled.
Also, drilling the frame or under-
body of your vehicle could cause
deterioration of strength of your
vehicle and cause corrosion around
the drilled hole.
CAUTION
. Do not modify the vehicle ex-
haust system, brake system, or
other systems when installing a
hitch or other trailer towing
equipment.
. Do not use axle-mounted hitches
as they can cause damage to the
axle housing, wheel bearings,
wheels or tires.
Do not use a trailer hitch other than
genuine SUBARU trailer hitch. A genuine
SUBARU hitch is available from your
SUBARU dealer.
& Connecting a Trailer
! Trailer brakes
WARNING
Do not directly connect your trailer's
hydraulic brake system to the hy-
draulic brake system in your vehicle.
Direct connection would cause the
vehicle's brake performance to de-
teriorate and could lead to an acci-
dent.
Check that your trailer's brakes conform
with Federal, state/province and/or other
applicable regulations. Your SUBARU's
brake system is not designed to be tapped
into the trailer's hydraulic brake system.
Please ask your SUBARU dealer and
professional trailer supplier for more in-
formation about the trailer's brake system.