© Aixro GmbH / Woelfle Engineering GmbH
7/23
! Ensure that the fuel lines are not restricted by the attachment (kinks or sharp bends),
as this can damage the engine.
4.4. Throttle Cable
1.
Loosen the nut of the elbow section at the top of the carburettor, so its direction can be
adjusted.
2.
Lay an external throttle cable from the elbow to the throttle cable adjuster of your kart
and cut it to the correct length, so the throttle cable is not distorted (too long) or kinked
(too short).
3.
Check the ends of the external cable making sure they are round and have no sharp
edges.
4.
Pull the throttle cable through the external cable and the cable adjuster until it reaches
the elbow section and the cable adjuster.
5.
Align the elbow to the external cable and secure the position by re-tightening the nut on
the carburettor.
6.
Attach the outside throttle cable to your kart using tape or tie wraps, so that it is clear
from any moving parts and the ground.
7.
Attach the throttle cable to the throttle pedal using a (twin screw) cable clamp.
8.
Check the adjustment of the throttle cable and the throttle pedal. At idle position the
cable must be slightly loose while the slide of the carburettor remains at its lowest posi-
tion. At full throttle the carburettor inlet should be fully open, and the throttle pedal
should reach the limit screw of the chassis.
9.
Tighten down the throttle cable clamp, the counter nuts and the pedal limit screws.
10. Attach the air filter to the flange of the carburettor and secure it with a hose clamp.
11. Avoid leaving a long open end of throttle cable behind the cable clamp. If the open end
is longer than 30mm, you should secure it. If your front bumper bar has a hole, you can
put the open end into the hole and attach it with tape. It is also possible to attach it to
the throttle cable with some small tie wraps or a fuel line, which you put around the
throttle cable before attaching it to the throttle pedal.
! Check the throttle cable for smooth operation. A sticking cable may result in injuries
or engine damage.
! Check that tie wraps used to attach the throttle cable to the chassis will not move if
the kart hits the ground. Otherwise the throttle cable can get stuck while driving. In
case of doubt it is better to use tape.
4.5. Exhaust
The attachment of the exhaust is similar to direct drive 100cc or KF-engines. It is attached in
an exhaust cradle and secured with springs.
1.
Bolt the exhaust header to the engine with a gasket in between. Use 3 M8 nuts tight-
ened to 25Nm.
2.
Attach the silencer to the header. Hold it horizontally and without tension. This is the
correct position of the exhaust if the chain tension (=engine position) is set correctly.
3.
Adjust the exhaust cradle to suit the silencer position.
4.
Lay the silencer in the cradle and attach it to the manifold using the springs provided.
5.
Attach the exhaust to the cradle using standard exhaust springs.
! If the exhaust is not attached without strain or tension this may cause cracks of the
exhaust or manifold. Therefore you should also check the exhaust attachment when
you change the gearing or the position of the engine.
Depending on the design of the attachment it may be useful to use a thick plate with two
holes as an adapter for the exhaust cradle. This allows adjusting the position of the cradle in
driving direction. The height of the cradle can be adjusted with additional spacers.
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