22
23
MAINTENANCE
EXHAUST CONTROL SYSTEM
With the engine running,carbon monoxide,nitrogen oxide and
hydrocarbon are produced, and in certain conditions nitrogen
oxide and hydrocarbon will react together to make smoke while
carbon monoxide is toxic, so exhaust control is very important.
The manufacturer decreases exhaust emissions by introducing
poor-fuel carburettors and other devices to solve the problem.
To keep the exhaust of your engine within the standard exhaust
emission values, pay attention to the following:
MAINTENANCE
Maintain the engine periodically in accordance with the
maintenance schedule.
The maintenance schedule is made out on the basis of normal
use in normal conditions. If using under heavy load,dusty or wet
conditions or in high temperature,more frequent maintenance will
be necessary.
REPLACEMENT OF PARTS
We recommend that you use parts that are supplied by the
manufacturer or equivalent quality parts.
Replacement parts of inferior quality may impair the effectiveness
of the exhaust control system.
MODIFYING
Modifying the exhaust control system may make exhaust
emissions exceed statutory limits. Illegal modifications are:
•
Dismantling or modifying any part of the air inlet or outlet
system.
•
Modifying or removing speed adjustment controls or
connections which may result in the engine running outside
its set parameters.
•
PROBLEMS AFFECTING EXHAUST EMISSIONS
•
Difficulty in starting or stopping.
•
Erratic idling.
•
Giving off black smoke or excessive fuel consumption.
•
Poor ignition spark or no spark.
•
Ignition too advanced.
If you have any of these above problems please contact your
dealer.
CAUTION:
Before carrying out any maintenance to the machine release any
pressure and remove the water connection.
WATER SUCTION FILTER CHECKING
Check periodically in order to avoid deposits clogging it.
SPARK PLUG MAINTENANCE
After every 50 hours clean the spark plug with a brush. If the
insulator on the spark plug is damaged replace it immediately.
Check the spark plug gap with a feeler gauge, the gap should be
0.7 - 0.8mm. If adjustment is necessary bend the side electrode
carefully.
Check the spark plug gasket is in good condition or replace with
a new one. Screw in the spark plug to the bottom first by hand
and then tighten by using a spark plug wrench. If a new spark
plug is used, twist a ½ more turn after impacting the gasket. If
using the original one twist ⅛ - ¼ more turn.
CAUTION:
The spark plug eliminator should be serviced at least once every
100 hours of operation so as to keep it in good condition.
WARNING:
The muffler is very hot during running the engine and for a
prolonged period after stopping. Only service after the engine
cools down completely.
Unscrew two nuts and remove the exhaust elbow from the engine
body.
Unscrew five screws from the muffler guard and take it out.
Unscrew from the spark plug eliminator and separate from the
muffler.
Clean the spark eliminator mesh with a wire brush.
Reinstall the spark eliminator in reverse order of removal.
CAUTION:
Be careful not to damage the spark eliminator.
Never use a damaged spark eliminator.
CARBURETTOR IDLING ADJUSTMENT:
Start and pre-heat the engine until it reaches normal working
temperature.
Obtain standard idling by adjusting the throttle fixing screw under
the engine, Standard idling: 1700± 150rpm.