Maintenance - Shindaiwa 502s Owner's/Operator's Manual

Maintenance

IMPORTANT!
MAINTENANCE, REPLACEMENT
OR REPAIR OF EMISSION CONTROL
DEVICES AND SYSTEMS MAY BE PER-
FORMED BY ANY REPAIR ESTABLISH-
MENT OR INDIVIDUAL; HOWEVER, WAR-
RANTY REPAIRS MUST BE PERFORMED
BY A DEALER OR SERVICE CENTER
AUTHORIZED BY SHINDAIWA CORPO-
RATION. THE USE OF PARTS THAT ARE
NOT EQUIVALENT IN PERFORMANCE
AND DURABILITY TO AUTHORIZED
PARTS MAY IMPAIR THE EFFECTIVE-
NESS OF THE EMISSION CONTROL SYS-
TEM AND MAY HAVE A BEARING ON
THE OUTCOME OF A WARRANTY CLAIM.
Daily Maintenance
■
Remove dirt and debris from the saw exte-
rior, cylinder fins, and cooling air intake.
■
Inspect the saw for fuel and oil leaks.
Repair as necessary.
■
Service the air filter:
1. Remove the air filter cover and then
remove the element. Use extreme care
to prevent any debris from entering the
carburetor bore. Wash all parts with
soap and water, and then gently wipe
or blow dry before reassembly.
2. Install the air filter element in the saw.
10/15 Hour Maintenance
■
Remove and clean the spark plug.
Adjust the spark plug gap to 0.024"
(0.6 mm), and reinstall. Replace any
damaged or visibly worn plug with an
NGK BPMR7A or equivalent spark
plug of the same heat range.
CAUTION!
Never allow chips or other debris
to enter the cylinder bore! Before
removing the spark plug, thoroughly
clean the spark plug and cylinder
head area!
WARNING!
Before performing any
maintenance on this saw, stop the
engine and disconnect the spark
plug wire!
Muffler
This unit must never be operated with
a faulty or missing spark arrester or
muffler. Make sure the muffler is well
secured and in good condition. A worn or
damaged muffler is a fire hazard and may
also cause hearing loss.
Cover
■
Remove the guide bar and chain. Care-
fully inspect the drive sprocket for
wear or damage, and replace if noted.
Inspect the guide bar grooves and
tip for wear or damage, and repair or
replace components as required.
IMPORTANT!
The drive sprocket and saw chain loop
should always be replaced as a set! For econ-
omy, rotate the same 2-3 chains daily. When
these chains are worn out, replace both the
chains and drive sprocket at the same time.
Spark Plug
Keep the spark plug and wire connec-
tions tight and clean.
Fasteners
Make sure nuts, bolts, and screws
(except carburetor adjusting screws)
are tight.
■
Sharpen and adjust the saw chains as
required.
■
Clean the guide bar groove and oil
hole, and inspect the bar groove and
tip for damage or unusual wear. Repair
or replace worn or damaged compo-
nents as necessary.
■
Inspect the drive sprocket.
■
Inspect the entire saw for damaged,
Filter Element
loose or missing components or fas-
tenings. Repair as necessary.
Choke
0.024" (0.6
mm)
15