Zenoah BT251 ユーザーズマニュアル

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7. Fuel
RECOMMENDED MIXING RATIO
GASOLINE 50:OIL 1
(when using  ZENOAH genuine oil)
• Exhaust emission are controlled by the
fundamental engine parameters and
components(eq., carburation, ignition
timing and port timing) without
addition of any major hardware or the
introduction of an inert material during
combustion.
• These engines are certified to operate on
unleaded gasoline.
• Make sure to use gasoline with a
minimum octane number of 89 RON
(USA/Canada: 87AL)
• If you use a gasoline of a lower octane
value than prescribed, there is a danger
that the engine temperature may rise and
an engine problem such as piston seizing
may consequently occur. 
• Unleaded gasoline is recommended to
reduce the contamination of the air for the
sake of your health and the environment.
• Poor quality gasolines or oils may damage
sealing rings, fuel lines or fuel tank of the
engine.
HOW TO MIX FUEL
Pay attention to agitation.
1. Measure out the quantities of gasoline
and oil to be mixed.
2. Put some of the gasoline into a clean,
approved fuel container.
3. Pour in all of the oil and agitate well.
4. Pour In the rest of gasoline and agitate
IMPORTANT
• Gasoline is very flammable. Avoid
smoking or bringing any flame or
sparks near fuel. Make sure to stop the
engine and allow it cool before
refueling the unit. Select outdoor bare
ground for fueling and move at least
3m (10ft) away from the fueling point
before starting the engine. 
• The ZENOAH engines are lubricated by
oil specially formulated for air-cooled 2-
cycle gasoline engine use. If ZENOAH oil
is not available, use an anti-oxidant added
quality oil expressly labeled for air-cooled
2-cycle engine use. (JASO FC GRADE
OIL or ISO EGC GRADE)
• Do not use BIA or TCW (2-stroke water-
cooling type) mixed oil.
WARNING
50:1 MIXING CHART
GASOLINE     gal.
1
2
3
4
5
2-CYCLE OIL fl.oz 2.6
5.2
7.8 10.4
13
GASOLINE     liter
1
2
3
4
5
2-CYCLE OIL   ml
20
40
60
80
100