Long Term Storage; Blade Sharpening - Shindaiwa B450 Owner's/Operator's Manual

Long Term Storage

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 and
apply a light coating of oil to all metal
surfaces.
 Drain all the fuel from the fuel tank.
IMPORTANT!
All stored fuels should be stabilized with a
fuel stabilizer such as STA-BIL™.
To remove the remaining fuel from the
fuel lines and carburetor and with the fuel
drained from the fuel tank.
1. Prime the primer bulb until no more fuel
is passing through.
. Start and run the engine until stops
running.
3. Repeat steps 1 and  until the engine will
no longer start.
CAUTION!
Gasoline stored in the carburetor
for extended periods can cause
hard starting, and could also lead to
increased service and maintenance
costs.
 Remove the spark plug and pour about
7 grams of -cycle mixing oil into the
cylinder through the spark plug hole.
Slowly pull the recoil starter  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.
18

Blade Sharpening

With the file or a grinder, file a blade
as follows.
WARNING!
Sharpen only the cutting teeth
of a blade. DO NOT alter the
contour of the blade in any way. In
order to keep the blade in balance,
all cutting edges must be sharpened
equally. DO NOT file the tips of the
teeth too sharp.
The sharpening angle should be 45° approx.
Do not file the tips of the blade too sharp.
The bottom of each tooth must remain unsharpened.
4-Tooth Blade
8-Tooth Blade
Make sure the width of the 3 sides/
Leave 0.2~0.5mm unsharpened.
(Blade as viewed from bottom)
4 sides is all the same.