Onyx X Series User Manual

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WHAT YOU NEED TO KNOW
The engine performance, reliability and life are inuenced by many factors, some external and some
strictly associated with the quality of the products used and with the scheduled maintenance.
The following information allow a better understanding and use of your engine.
ENVIRONMENTAL CONDITIONS:
The operation of a four-stroke endothermic engine is aected by:
a) Temperature:
– Working in low temperatures could lead to a dicult cold starting.
– Working in very high temperatures could lead to a dicult hot starting due to the evaporation
of the fuel either in the carburetor oat chamber or in the pump.
– In any case, the right kind of oil must be used, according to the operating temperatures.
b) Altitude:
– The higher the altitude (above sea level), the lower the max power developed by an endothermic
engine.
– When there is a considerable increase in altitude, the load on the machine should be reduced and
particularly heavy work avoided.
OIL:
Use always high quality oils, choosing their viscosity grade according to the operating temperature.
a) Use only detergent oil classied SJ,SL or higher are acceptable.
b) Choose the SAE viscosity grade of oil from this chart:
– from 5 to 35 °C = SAE 30
– from -25 to + 5 °C = 5W-20 or 5W-30 (Multi-viscosity)
– from -7 to + 35 °C = Synthetic oils 10W-30 or 15W-40 (Multi-viscosity)
c) The use of multi-viscosity oils in hot temperatures will result in higher than normal oil consumption;
therefore, check oil level more frequently.
d) Do not mix oils of dierent brands and features.
e) SAE 30 oil, if used below 5°C, could result in possible engine damage due to inadequate lubrication.
f) Oil should be at “MAX” mark do not overll. Overlling with oil may cause:
– Smoking;
– Spark plug or air lter fouling, which will cause hard starting.
AIR FILTER:
A good quality fuel is the major issue for the engine reliability of operation. The air lter must always
be in perfect working order, to prevent debris and dust from getting sucked into the engine, reducing
the eciency and life of the machine.
a) Always keep the ltering element free of debris and in perfect working order.
b) If necessary, replace the ltering element with an original spare part. Incompatible ltering ele-
ments can impair the eciency and life of the engine.
c) Never start the engine without mounting the ltering element properly.
WHAT YOU NEED TO KNOW
SPARK PLUG:
Not all the spark plugs for endothermic engines are the same!
a) Use only spark plugs of the recommended type, with the right heat range.
b) Check the length of the thread, because – if too long – it will damage the engine beyond repair.
c) Make sure that the electrodes are clean and their gap is correct.
STANDARDS OF USE
BEFORE EVERY USE:
Before every use, perform the following checking procedures in order to assurea regular operation.
CHECK THE OIL LEVEL:
See the specic chapter for the oil to be used.
a) Place the engine level.
b) Clean around oil ll.
c) Unscrew the cap, clean the end of the dipstick and insert it, as illustrated, without screwing it down.
d) Remove the cap with the dipstick and check the oil level that must be between “MIN” and “MAX”
marks.
e) If oil is required, add oil of the same kind up to the “MAX” mark, being careful not to spill any outside
the oil ll.
f) Fully tighten the llercap and wipe o any spilled oil.
CHECK THE AIR CLEANER:
The eciency of the air lter is fundamental for the engine to work properly. Do not start the engine if
the ltering element is missing or broken.
a) Clean around the lter cover.
b) Open the clips of the two sides of the air lter cover.
c) Check the condition of the ltering element. It must be intact, clean and in pefect working order; if
not, either carry out maintenance or replace it.
d) Put the cover back.
LONG STORAGE (OVER 30 DAYS):
In case the engine has to be stored for a long time (for example at the end of the season), a few precautions
are needed to help the future start-up.
a) To prevent the formation of deposits inside the tank, empty it of fuel by unscrewing the carburettor
oat chamber plug and collecting all the fuel in a suitable container. At the end of the operation remember
to screw the plug back on and fully tighten it.
b) Remove the spark plug and pour about 3 cl of clean engine oil into the spark plug hole, then, having
blocked the hole with a rag, run the starter motor briey to turn the engine for a few revs and distribute the
oil over the inner surface of the cylinder. Finally replace the spark plug without connecting the cable cap.

Onyx X Series Specifications

General

Brand	Onyx
Model	X Series
Category	Scrubber
Language	English