Shindaiwa X7502863800 - Manual (Page 15)

15
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1,100
feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1,100 feet ASL
the carburetor may need to be adjusted by an authorized Shindaiwa service dealer.
IMPORTANT!
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the engine
below 1,100 feet ASL, otherwise severe engine damage may result.
NOTE
Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments,
other than idle speed, must be performed by an authorized Shindaiwa dealer.
Carburetor Adjustment
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be
made. During the break-in period, your engine performance will increase and exhaust emissions will stabilize. Idle speed
can be adjusted as required.
Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:
Clean external parts thoroughly.
■
Drain all the fuel from the carbure-
■
tor and the fuel tank.
To do so:
Prime the primer bulb until no 1.
more fuel is passing through.
Start and run the engine until it
2.
stops running.
Repeat steps 1 and 2 until the
3.
engine will no longer start.
Long Term Storage
Remove the spark plug and pour
■
about 7 ml (4 oz.) of engine oil into
the cylinder through the spark plug
hole. Slowly pull the recoil starter 2
or 3 times so oil will evenly coat the
interior of the engine. Reinstall the
spark plug.
Before storing the unit, repair or
■
replace any worn or damaged parts.
Remove the air cleaner element
■
from the carburetor and clean it
thoroughly with soap and water, let
dry and reassemble the element.
Store the unit in a clean, dust-free
■
area.
IMPORTANT!
All stored fuels should be stabilized
with a fuel stabilizer such as STA-BIL.
CAUTION!
Gasoline stored in the carburetor
for extended periods can cause
hard starting, and could also lead to
increased service and maintenance
costs.
NOTE
Damage caused by stale or con-
taminated fuel is not covered by the
Shindaiwa warranty policy.
Idle adjustment
screw
The engine must return to idle speed whenever the throttle lever is released. Idle
speed is adjustable, and must be set low enough to permit the engine clutch to
disengage the cutting attachment.
Idle Speed Adjustment
Place the trimmer on the ground, then start the engine, and then allow it to idle 1.
2-3 minutes until warm.
If the attachment moves when the engine is at idle, reduce the idle speed by
2.
turning the idle adjustment screw counter-clockwise.
If a tachometer is available, the engine idle speed should be final adjusted to
3.
the values in the Specification section.
WARNING!
The cutters must NEVER engage at engine idle speeds! If the idle
speed cannot be adjusted by the procedure, described here, contact your
authorized Shindaiwa servicing dealer.
NOTE
Carburetor fuel mixture adjustments are preset at factory and cannot be serviced
in the field.