Keep your spark plug clean with regular
checking for carbon build up.
The high tension lead between the ignition box and
spark plug cap can vibrate loose during running and
contact can be lost. Twist the HT lead clockwise at
both ends to restore contact.
Keep the magneto coil dry by maintaining a tight
seal on the magneto cover plate to keep rain out.
A dab of loctite is recommended on cover plate screws
to stop it vibrating loose. To test your magneto;
the resistance blue to black should read around 330ohms.
Engine can be starved of fuel for several reasons.
Firstly, check the seal is tight between carburetor
and intake manifold and manifold to engine to avoid
sucking in too much air in the fuel mix.
A tight fitting fuel cap can cause a vacuum in the
fuel tank and stifle fuel flow to engine. A small
hole drilled in cap will eliminate this problem.
If the fuel to air mix is still too lean and choke
is constantly required, you should adjust the needle
setting to increase fuel to air ratio. Do this by
dropping the circlip on the needle down a notch or
Of course, never use contaminated fuel and regularly
check your filter on fuel tap is not obstructed.
Regularly check head nuts for tightness. Natural
vibration in the engine can cause them to shake loose
and blow your head gasket. A dab of loctite on the
head nuts is recommended.
Keep exhaust clean by regularly removing bottom
cap and degreasing the baffles. If exhaust gases cannot
freely escape the combustion chamber you will experience
severe lack of power.
Ecotrax engine kits are fitted with 415 heavy duty
chains. The chain will travel more smoothly and quietly
over the drive sprocket if the sharp teeth are rounded
off with a file or grinder.
Liberally apply grease to chain, drive sprocket
and bucking bar.
Open cover plate on other side of engine and apply
a small amount of grease to meshing clutch gears -
don't overdo it or you may allow grease into the clutch
and cause slipping.
Put a drop of machine oil into the sheath of the
clutch and throttle cables.
The engine will gradually gain more power during
and after the run-in period when it has properly loosened
THIS LIST IS NOWHERE NEAR COMPLETE BUT
IT SHOULD SOLVE THE MOST COMMON PROBLEMS AND
MAINTAIN OPTIMUM PERFORMANCE.
OF FOLLOWING THE CORRECT RUN-IN PRODURE CANNOT BE
OVER EMPHASISED SO IT IS REPEATED HERE TO ENSURE A
LONG ENGINE LIFE:
The engine is a 2 stroke design, therefore a petrol/oil
mixture is necessary. During the first 500km run-in
period, the ratio for the engine is 16 parts unleaded
petrol to 1 part high- grade 2 stroke motorcycle oil
After the run-in period, the ratio is increased to
20 parts petrol to 1 part oil (50ml/ litre). Be sure
to mix fuel and oil before adding to tank - don't
Do not exceed 20km/h during run-in period. Speed may
be increased to 35km/h after the first 500km.
Don’t run for more than 30 minutes during run-in
period. WARNING: FAILURE TO FOLLOW THESE DIRECTIONS
WILL CAUSE ENGINE TO SEIZE.