Continued from page 1
Air Filter
Your new mini moto is equipped with an air filter. Some bikes such as
B1 Origami rep liquid cooled and
Mini Dirt bike have a ‘cone’ style K and N style air filter. The 2005 mk2 mini moto and
B1 Origami Replica air cooled bikes have a standard mini moto air filter. Both air filters purify
intake of air that is sucked into
carburettor. This means that
air filter should be cleaned regularly as
mini moto’s performance can begin to suffer as
engine can become starved of air if
air filter is choked with debris. To reach
air filter, remove
bikes bottom fairing, remove
protective cover by unscrewing
holding screws. Clean
air filter in petrol but make sure that
filter is dry before reattaching to you mini moto.
Tyres
The tyres on your mini moto are filled with air (pneumatic). Please consult your mini moto handbook for
appropriate psi. It is important to check
tyre pressure regularly, an under inflated tyre will affect
performance of your mini moto, acceleration can become sluggish and cornering can become dangerous.
Chain
Before riding your mini moto you need to make sure that
front and back sprockets are aligned and that
chain is perfectly straight running between them. Once you have established this make sure that
chain is tensioned correctly (please see your mini moto handbook). To test
tension of
chain you can manually push
pocket bike, if you hear a ‘pinging’ or ‘popping’ sound
chain is too loose. If
chain is noisy and starts to bind
chain is too tight. Make sure that
chain is well oiled. The chain needs to be oiled before every ride.
Gearing
The gearing of you mini moto is dictated by
number of
teeth on
front sprocket and on
back sprocket. The sprockets can be changed as an easy way to manipulate top end speed and acceleration, quite like changing gear on a mountain bike. A front sprocket with more teeth will improve acceleration, however
top end speed will be reduced. A larger rear sprocket will produce a higher top speed but acceleration will suffer. The gearing on your bike can be adjusted in accordance for
track you are intending to ride I.e. a small track with a lot of bends will suit gearing for improved acceleration, however a track with long straights will require a mini moto that is geared for a higher top speed.
Throttle
The throttle on your new mini moto is a ’twist grip’ style throttle. When you twist
throttle
throttle cable is pulled back revving
engine. It is important to keep this cable free from obstacles and clean. If
throttle begins to feel ‘loose’ of ‘gives’,
tension of
cable can be adjusted via
adjusting screw.
Brakes
The brake system comprises of brake levers, brake cables, brake callipers and brake discs. The brakes on your mini moto are operated by levers found on
handle bars. The right hand brake controls
front brake, and
left controls
back brake. Pulling on
handle pulls
brake cable which in turn pulls
lever located on
bake calliper. This action pushes
brake discs towards each other. This creates friction on
brake disc which slows down or stops
bike. The brakes can be adjusted in
following ways. The brake cable can be tensioned using
adjustment screw found on
brake lever. Unscrew
locking nut, twist
screw to reach
desired tension. Re screw
locking nut. This is a two person job. Adjust
screw on
hand brake so that is at
end of its travel. Undo
clamp that holds
brake cable on
lever located on
brake calliper. One person needs to push
lever forward as far as it will,
second person needs to pull back on
brake cable and re fasten
clamp. The crake cable will now be highly tensioned.
Pull Start
To start
mini moto pull slowly to turn
fly wheel. This pumps some fuel around
engine, which lubricates
moving parts. Pull
pull start firmly in order to start
engine. Important, do not pull
cord to
end of its run as it can break. If
mini moto does not start check
choke and
throttle cable.
Choke
The choke controls
amount of air that is allowed into
air/fuel mix. The choke is adjusted via a lever located on
side and back of
engine. The choke is off when
lever is down, and on when
lever is up. When you start
mini moto
choke should be on, when
mini moto is warm and ready to ride
choke needs to be off.
Carburettor
It is recommend that any adjustments to
carburettor are made by a professional. The carburettor pumps and mixes
fuel and air. The small diaphragms, orifices and ports mix
air and fuel very precisely, this process demands clean fresh fuel.
Jet
The jet can be adjusted by
screw located in
access hole to
right of
choke lever. The jet is adjusted by
manufacture however
conditions of where you wish to ride may be different, which means that you will need to make adjustments. Turning
screw clockwise will make
bike run with a leaner mixture, and counter clockwise will richen
mixture. Only adjust
screw 1 tern a at time and then test
mini moto, this is trail and error. Please note that it is best to find
optimum setting for performance and then run a slightly richer mixture as a mix that is too lean can seize
engine.

Matt Tong has been importing and riding Mini Motos for over two years. For more information please visit http://www.minimotosandmore.co.uk