Chain Sharpening; Ignition Timing; Spark Plug; Storage - Husqvarna 137 Instruction Manual

• Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a fiat file.
• When rail top is uneven, use a flat file to re-
store square edges and sides.
_1"_('7 _ File Rail Edges_r] r}
and Sides I U I
square I I
Worn Groove Correct Groove
Replace guide bar when the groove is worn,
the guide bar is bent or cracked, or when exce-
ss heating or burring of the rails occurs. If re-
placement is necessary, use only the guide bar
specified for your saw in the repair parts list or
on the decal located on the chain saw.
CHAIN SHARPENING
_WARNING:
Failure to properly
sharpen the chain considerably increases
the risk of kickback.
Chain sharpening is a complicated task that
requires special tools, We recommended
you refer chain sharpening to a professional
chain sharpener.
IGNITION TIMING
Ignition timing is fixed and nonadjustable.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ-7Y spark
plug and tighten securely with a 3/4 inch
(19 ram) socket wrench. Spark plug gap
should be 0.025 inch (0.5 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
STORAGE
WAR NIN G: Stop engine and allow to
cool, and secure the unit before storing or
transporting in a vehicle. Store unit and fuel in
an area where fuel vapors cannot reach sparks
or open flames from water heaters, electric mo-
tors or switches, furnaces, etc. Store unit with
all guards in place. Position so that any sharp
object cannot accidentafly cause injury to
passersby. Store the unit out of reach of chil-
dren.
• Before storing, drain all fuel from the unit.
Start engine and allow to run until it stops.
• Clean the unit before storing. Pay particular
attention to the air intake area. keeping it free
of debris. Use a mild detergent and sponge
to clean the plastic surfaces.
• Do not store the unit or fuel in a closed area
where fuel vapors can reach sparks or an
open flame from hot water heaters, electric
motors or switches, furnaces, etc.
• Store in a dry area out of the reach of chil-
dren.
• Ensure the machine is cleaned and that a
complete service is carried out before
tong-term storage.
• The guide bar and chain must always be
covered with a scabbard when the machine
is being transported or in storage in order to
prevent accident contact with the sharp
chain. Even a non-moving chain can cause
serious cuts to yourself or persons you
bump into with an exposed chain.
Spark Plug Boot
15