![background image](http://html1.mh-extra.com/html/ryobi/ry10518/ry10518_operators-manual_1504236012.webp)
Page 12 — English
WARNING:
Always shut off engine before fueling. Never add
fuel to a machine with a running or hot engine.
Move at least 30 ft. from refueling site before
starting the engine. DO NOT SMOKE! Stay away
from open flames or sparks. Failure to heed this
warning could result in serious personal injury.
FUEL AND REFUELING
HANDLING THE FUEL SAFELY
WARNING:
Check for fuel leaks. If any are found, correct
them before using the saw to prevent fire or
burn injury.
Always handle fuel with care; it is highly flam-
mable.
Always refuel outdoors and do not inhale fuel
vapors.
Do not let gasoline or lubricant come in contact
with skin.
Keep gasoline and lubricant away from the eyes.
If gasoline or lubricant comes in contact with
the eyes, wash them immediately with clean
water. If irritation is still present, see a doctor
immediately.
Clean up spilled fuel immediately.
Refer to
Refueling in the
Specific Safety Rules
section of this manual
for additional safety infor-
mation.
MIXING THE FUEL
This product is powered by a 2-cycle engine and
requires pre-mixing gasoline and 2-cycle lubri-
cant. Pre-mix unleaded gasoline and 2-cycle
engine lubricant in a clean container approved
for gasoline.
This engine is certified to operate on unleaded
gasoline intended for automotive use with an
octane rating of 87 [(R + M) / 2] or higher.
PREMIUM EXACT MIX™ (50:1)
GASOLINE
LUBRICANT
1 Gallon (US)
2.6 oz.
1 Liter
20 cc (20 ml)
Do not use any type of pre-mixed gasoline/lubri-
cant from fuel service stations, this includes the
pre-mixed gasoline/lubricant intended for use
in mopeds, motorcycles, etc.
Use a high quality 2-cycle self-mixing lubricant
for air-cooled engines. Do not use automotive
lubricant or 2-cycle outboard lubricant.
Mix 2% lubricant into the gasoline. This is a 50:1
ratio.
Mix the fuel thoroughly and each time before
fueling.
Mix in small quantities. Do not mix quantities
larger than usable in a 30-day period. A 2-cycle
lubricant containing a fuel stabilizer is recom-
mended.
OXYGENATED FUELS
DO NOT USE E85 FUEL. IT WILL VOID YOUR
WARRANTY.
NOTE: Fuel system damage or performance
problems resulting from the use of an oxygenated
fuel containing more than the percentages of
oxygenates stated below
are not covered under
warranty.
Ethanol. Gasoline containing up to 10% ethanol
by volume (commonly referred to as E10) or 15%
ethanol by volume (commonly referred to as E15)
are acceptable. E85 is not.
OPERATION