Fuel And Oil - Shindaiwa 300 Service Manual

Shindaiwa Recommends...
If a trimmer or brushcutter must be stored
longer than 30 days, Shindaiwa recommends
either:
■ all unused fuel be removed from the fuel
system by draining the fuel tank and then
running the unit until it stops from fuel
starvation.
or
■ pre-treating all fuel supplies with a fuel
stabilizer such as StaBil
manufacturer's directions).
IMPORTANT!
Gasoline octane and volatility can degrade
rapidly during storage, and some gasoline
compounds may deteriorate certain fuel
system components!
■ If gasoline is to be stored longer than 30
days, Shindaiwa recommends the used of a
high-quality fuel stabilizer such as StaBil™
or similar product!
■ Before storing any chain saw, always drain
the fuel tank and then operate the engine
until all remaining fuel is drained from the
carburetor and fuel lines!
Recommendations
When using oxygenated fuels:
■ Never use any fuel containing more than
10% alcohol by volume. See Shaker Test ,
below.
■ When an oxygenated fuel must be used,
choose an ether-based oxygenate over one
containing alcohol.
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90%
80%
70%
60%
50%
40%
30%
20%
10%
10% Water
Shaker Test
Appendix Fuel and Oil
■ To minimize the risk of lean seizure when
using oxygenated fuels, Shindaiwa recom-
mends enriching carburetor fuel settings by
at least 5%.
■ Use only fuels with an octane rating of 87 or
higher, and purchase only seasonally
blended fuels from a high-volume dealer.
■ Never store a chain saw with fuel remaining
in the carburetor or fuel lines. Pre-treat all
stored fuels with an appropriate fuel
stabilizer such as StaBil™.
(follow the
■ Always use Shindaiwa Premium 2-Cycle
Engine Oil mixed at a fuel/oil ratio of 40:1
(3.2 ozs./U.S. gallon). If Shindaiwa-brand
engine oil is not available, fuel should be
mixed with a premium grade 2-cycle oil
specifically designed for air-cooled en-
gines.
■ The bright stocks used in two-cycle mixing
oils tend to lower overall fuel octane ratings.
Whenever possible, use only Shindaiwa
Premium 2-Cycle Engine Oil blended at a
ratio of 40:1.
IMPORTANT!
Under certain conditions, oxygenated fuel
can cause an engine to operate "lean"!
■ If a two-cycle engine must be operated with
oxygenated fuel, the engine's high-speed
adjustment should be enriched at least 5%!
■ If you suspect fuel-related engine damage,
refer to Engine Seizure in the Troubleshoot-
ing Section.
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90%
80%
70%
60%
50%
40%
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20%
10%
10% Water
No alcohol
Shindaiwa Inc. 1995
14
Section
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
FUL-13
10% alcohol
+
10% water
135