D. Coupling Assembly - Four winns 248 Vista Owner's Manual

D. Coupling Assembly

To unlock the coupler, pull the locking trigger upward with
your index finger and lift the locking lever. To lock, push
the locking lever down. See Figure S4.
Figure S4: Coupling Assembly
This is also applicable to the Surge Disc Brake Actuator
and Coupling Assembly.
E. Surge Disc Brakes
Surge disc brakes are available on model trailers manu-
factured by Four Winns. Surge disc brakes operate auto-
matically when the tow vehicle's brakes are applied.
When the tow vehicle slows down or stops, the forward
momentum or "surge" of the trailer against the hitch ball
applies pressure to a master cylinder in the trailer cou-
pler. The master cylinder supplies hydraulic pressure
through the hydraulic system which activates the trailer's
disc brakes. See Figures S5 and S6. Please refer to
the manufacturer's literature included in your owner's
packet for further details regarding operation and main-
tenance.
The benefits of disc brakes in comparison to drum
brakes:
• Fewer moving parts.
• Longer life due to fewer moving parts.
• Friction pads are easily accessible.
• Easy access to caliper for cleaning and mainte-
nance.
• Calipers are self-adjusting allowing smoother
braking operation.
• Braking performance less likely to be
affected by dirt, water, or rust contamination.
• Fade resistant.
Vista™ Owner's Manual
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Figure S5: Brake Actuator & Coupling Assembly and Brake
For boat models with the Surge Brake Actuator and Cou-
pling Assembly shown in Figure S6, lift the release handle
to unlock the coupler. Push down on the release handle/
locking lever to lock the trailer to the ball hitch. The lock-
ing pin, provided with the trailer, or a padlock must be
inserted in the locking lever hole. This ensures the
coupler's locking lever remains in the locked position dur-
ing towing of the trailer. Refer to Section S-3 Operation
for additional information on couplers and hitching to the
tow vehicle.
NOTICE
Anti-sway devices as used on recreational vehi-
cles (RV's) are not applicable to surge brake sys-
tems and should not be used on Four Winns®
trailers.
DO NOT use a trailer hitch with moving parts. The
brakes could activate when traveling downhill. Al-
ways use a fixed hitch.
If the brakes are wet from loading, travel at a slow speed
and apply the brakes on your towing vehicle several times
to "dry" out the trailer brakes.
Section S
Page 5