Jonsered 70C 用户手册
26 –
English
FUEL HANDLING
Fuel
CAUTION! The machine is equipped with a two-stroke engine
and must always been run using a mixture of gasoline and
two-stroke engine oil. It is important to accurately measure
the amount of oil to be mixed to ensure that the correct
mixture is obtained. When mixing small amounts of fuel, even
small inaccuracies can drastically affect the ratio of the
mixture.
and must always been run using a mixture of gasoline and
two-stroke engine oil. It is important to accurately measure
the amount of oil to be mixed to ensure that the correct
mixture is obtained. When mixing small amounts of fuel, even
small inaccuracies can drastically affect the ratio of the
mixture.
Gasoline
•
This engine is certified to operate on unleaded
gasoline.
gasoline.
•
Use good quality unleaded gasoline.
•
The lowest octane recommended is 87. If you run the
engine on a lower octane than 87 it can result in knocking.
This gives rise to a high engine temperature, which can
result in serious engine damage.
engine on a lower octane than 87 it can result in knocking.
This gives rise to a high engine temperature, which can
result in serious engine damage.
•
When working with continuous high revs (e.g. limbing) a
higher octane is recommended.
higher octane is recommended.
Two-stroke oil
•
For the best results and performance use JONSERED
two-stroke oil, which is specially formulated for our two-
stroke engines. Mixture 1:50 (2%).
two-stroke oil, which is specially formulated for our two-
stroke engines. Mixture 1:50 (2%).
•
Never use two-stroke oil intended for water-cooled
outboard engines, sometimes referred to as outboard oil.
outboard engines, sometimes referred to as outboard oil.
•
Never use oil intended for four-stroke engines.
Mixing
•
Always mix the gasoline and oil in a clean container
intended for fuel.
intended for fuel.
•
Always start by filling half the amount of the gasoline to be
used. Then add the entire amount of oil. Mix (shake) the
fuel mixture. Add the remaining amount of gasoline.
used. Then add the entire amount of oil. Mix (shake) the
fuel mixture. Add the remaining amount of gasoline.
•
Mix (shake) the fuel mixture thoroughly before filling the
machine’s fuel tank.
machine’s fuel tank.
•
Do not mix more than one month’s supply of fuel at a time.
•
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
should be emptied and cleaned.
•
This engine is certified to operate on unleaded
gasoline.
gasoline.
Chain oil
•
The chain lubrication system is automatic and we
recommend the use of special oil (chain oil) with good
adhesion characteristics.
recommend the use of special oil (chain oil) with good
adhesion characteristics.
•
In countries where no special chain oil is available, EP90
transmission oil can be used.
transmission oil can be used.
•
Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
pump, the bar and the chain.
•
It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
viscosity range) to suit the air temperature.
•
In temperatures below 0
°C (32°F) some oils become too
viscous. This can overload the oil pump and result in
damage to the oil pump components.
damage to the oil pump components.
•
Contact your service agent when choosing chain oil.
!
WARNING! Always ensure there is adequate
ventilation when handling fuel.
ventilation when handling fuel.
Gasoline, litre
Two-stroke oil, litre
2% (1:50)
5
0,10
10
0,20
15
0,30
20
0,40
US gallon
US fl. oz.
1
2 1/2
2 1/2
6 1/2
5
12 7/8