Mixing Fuel; Starting The Engine - Shindaiwa B450 Owner's And Operator's Manual

Mixing Fuel

CAUTION!
 Some types of gasoline contain al-
cohol as an oxygenate. Oxygenated
gasoline may cause increased op-
erating temperatures. Under certain
conditions, alcohol-based gasoline
may also reduce the lubricating
qualities of some 2-cycle mixing oils.
 Never use any type of gasoline
containing more than 10% alcohol
by volume! Generic oils and some
outboard oils may not be intended
for use in high-performance 2-cycle
type engines, and should never be
used in your Shindaiwa engine.
CAUTION!
This engine is designed to operate on
a 50:1 mixture consisting of unleaded
gasoline and a premium 2-cycle mixing
oil only. Use of non-approved mixing
oils can lead to excessive maintenance
costs and/or engine damage.

Starting the Engine

Engine ignition is controlled by a two position switch mounted on the throttle housing labeled, "I" for ON or START and "O" for OFF
or STOP.
IMPORTANT!
Normally, the engine can be started
without setting the throttle control to the
fast idle position. However, if the engine is
difficult to start or stalls immediately after
starting, set the throttle control to the fast
idle setting as described in step 1.
1. Set the throttle lever to "fast idle" by
performing the following:
a. Depress and hold throttle lockout
lever A.
b. Squeeze and hold throttle lever B
(toward the handgrip).
c. Depress and hold throttle lever lock
button C.
d. While depressing throttle lever lock
C, release throttle lock lever B and
lockout lever A. See Figure 19.
Throttle
Control Lock
Button C
Throttle Control
Lever B
B45023
Figure 19
 Use only fresh, clean unleaded gasoline
with a pump octane of 87 or higher.
 Mix gasoline with 50:1 Shindaiwa
Premium 2-cycle mixing oil or with
an equivalent high quality 2-cycle
mixing oil.
Examples of 50:1 mixing quantities:
 1 gallon of gasoline to 2.6 oz. mixing oil
 5 liters of gasoline to 100 ml. mixing oil
Mix only enough fuel for your immediate
needs! If fuel must be stored longer than
30 days and Shindaiwa One oil with fuel
stabilizer is not used, it should first be
treated with a fuel stabilizer such as STA-
BIL™.
Oil is a registered JASO FC
classified oil and also meets or exceeds
ISO-L-EGD performance requirements.
Shindaiwa One is recommended for
use in all Shindaiwa low emissions engines.
Shindaiwa One also includes
a fuel stabilizer.
2. Slide the ignition switch to I (ON) posi-
tion. See Figure 20.
3. Prime the engine by repeatedly
depressing the carburetor primer bulb
until fuel can be seen flowing through
the transparent overflow return tube.
See Figure 21.
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not flood the
engine with fuel.
4. (Cold Engine Only) Choke the engine
by moving the choke lever up towards
the spark plug (choke is closed). See
Figure 22.
Throttle
Control
Lockout
Lever A
Figure 20
IMPORTANT!
IMPORTANT!
IMPORTANT!
ON
B45024
Filling the Fuel Tank
WARNING!
Minimize the risk of fire!
 STOP engine before refueling.
 ALWAYS allow the engine to cool
before refueling!
 Wipe all spilled fuel and move the
engine at least 10 feet (3 meters)
from the fueling point and source
before restarting!
 NEVER start or operate this
unit if there is a fuel leak.
 NEVER start or operate this
unit if the carburetor, fuel lines, fuel
tank and/or fuel tank cap are dam-
aged.
 NEVER smoke or light any fires near
the engine or fuel source!
 NEVER place any flammable mate-
rial near the engine muffler!
 NEVER operate the engine without
the muffler and spark arrester in good
working condition.
1. Place the brushcutter on a flat, level
surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
3. Remove the fuel cap, and fill the tank
with clean, fresh fuel.
4. Reinstall the fuel filler cap and tighten
firmly.
Primer Bulb
Figure 21
B45025
B45026
Figure 22
Choke Lever
(closed)
13