SEA BEYOND INT’L T-REX User Manual

CARBURETORS ADJUSTMENT GUIDE
Sometimes the carburetors aren't quite adjusted correctly from the factory. If your scooter
isn't quite going as fast as it should, or it won't idle, then you probably need to adjust your
carburetor. It's easy to adjust one. Just follow these steps:
The small gold screw on the side of the
carburetor is the idle speed screw. This
screw controls the idle speed; the tip
should extend about a 1/8 of an inch (4
mm). Adjust it so the engine will idle at
just fast enough speed to stay running.
The black screw located lower on the
side of the carburetor next to the choke
lever is for the high speed mixture.
Step One:
Remove the air filter cover. This is the black
box located on the left side of the scooter,
towards the front of the engine. There is a
screw right in the middle to unscrew.
Step Two:
You should now be able to see the air filter and
behind it the carburetor. There are two screws
on the carburetor which you can adjust, the air
screw and the idle screw (see picture to right
for guide).
Step Three:
Usually the idle screw doesn't need any
adjustment. What usually needs adjustment is
the air screw. We've found screwing it all the
way in, and then out 3 1/2 turns is usually the
right setting. Start by turning this screw in
(clockwise) until it stops. Don't turn it in tight,
just until it stops. Next, turn the screw out two
full turns (counter-clockwise). This is the
factory setting. You should be able to start and
operate the scooter with this setting. Once you
have it running, you can fine tune. You should
try putting the scooter up on a brick or chair,
and then giving it throttle after you adjust it.
It's adjusted optimally when the engine is
making the highest pitched noise.
Step Four:
There is also a main jet adjustment screw dead
center on the top of the carburetor. This is most
always set at 1 full turn out. If this is not
adjusted correctly, your scooter may not run, or
run very poorly. Once again, turn screw all the
way in (clockwise) and then out (counter-
clockwise) 360 degrees (1 full turn).
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SEA BEYOND INT’L T-REX Specifications

General

Brand	SEA BEYOND INT’L
Model	T-REX
Category	Scooter
Language	English