Long Term Storage - Shindaiwa 490 Owner's/Operator's Manual

40/50 Hour Maintenance
1. Replace the spark plug with an NGK
BPMR7A (or equivalent), gapped to
0.024"(0.6mm)-0.028" (0.7mm)
2. Use a hooked wire to extract the fuel
filter from inside the fuel tank, and
then remove and replace the filter
element. Before replacing the filter,
inspect the condition of the fuel line.
If damage or deterioration are noted,
the saw must be removed from
service until it can be inspected by a
Shindaiwa-trained service technician.
Spark Arrester Maintenance
Direction
Arrows
Cover
Screws
Cover
Hard starting or a gradual loss of
performance can be caused by carbon
deposits lodged in the muffler's spark
arrester screen.
To service or replace the spark arrester,
remove the two cover screws and cover,

Long Term Storage

(over 30 days)
n Thoroughly clean the saw exterior.
Remove all chips and other debris
from the cylinder fins and cooling
passages.
n Drain the fuel tank, and then clear
the carburetor and lines by running
the saw until it stops from lack of
fuel.
n Drain any remaining bar oil from the
oil reservoir.
Fuel Line
Fuel Filter
Arrester
(Do not remove)
Screen
then remove the screen. Clean the
screen with a small wire brush. Replace
if damaged. Reinstall the screen and
cover with the arrows directed to the
front of the muffler.
CAUTION!
Never store the saw with any fuel
remaining in the tank, fuel lines,
or carburetor! Your Shindaiwa
warranty does not include coverage
for damage caused by "stale" or
contaminated fuels!
n Remove the spark plug, and then
pour 1/4 oz. (5 ml) of 2-cycle mixing
oil into the cylinder through the
Hooked
Wire
3. Extract the oil filter from inside the
Muffler Body
n Remove, clean, and reinstall the air
n Repair or replace any damaged com-
n Protect the chain by using a chain
CAUTION!
Make sure you do not pierce the
fuel line with the end of the hooked
wire. The line is delicate and can be
damaged easily.
oil tank, and then wash the filter
element in an approved solvent. If
damage or deterioration are noted
on the oil suction line, the saw must
be removed from service until it can
be inspected by a Shindaiwa-trained
service technician.
CAUTION!
When installing the spark arrester
cover make sure the arrows are
directed to the front of the muffler.
If the spark arrester cover is
installed incorrectly, the hot exhaust
gases will be directed into the chain
saw and may cause heat damage
to surrounding parts.
CAUTION!
Carbon deposits in the combustion
chamber or exhaust port cannot be
removed in the field. For decarbon-
ization, return the 490 to your
Shindaiwa dealer.
spark plug hole. Before reinstalling
the spark plug, slowly pull the recoil
starter 2-3 times to distribute the oil
over the cylinder walls.
filter element as described under
"Daily Maintenance."
ponents as required, and then store
the unit in a clean, dry, dust-free area.
cover.
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