Fueling And Lubrication; Starting; Fueling Engine; Bar And Chain Lubrication - Husqvarna 137 Instruction Manual

5. Push lever on bar knob down toreturn le-
ver t oclosed/locked position.
_ WARNING: Failureto pushleveron
bar knob down to closed/locked position
could result in serious personal injury or
damage to your chain saw.
6. Use the screwdriver end of the chain ad-
justment tool (bar tool) to move chain
around guide bar.
7. If chain does not rotate, it is too tight.
Loosen bar knob 1 turn (counterclock-
wise); then, loosen chain by turning the
adjusting wheel t/4 turn (upward direc-
tion). Retighten bar knob.
8. If chain is too loose, it will sag below the
guide bar. DO NOT operate the saw if the
chain is loose.
WARNING: If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury.
WARNING; Muffler is very hot dur-
ing and after use. Do not touch the muffler or
allow combustible material such as dry
grass or fuel to do so.
FUELING ENGINE
_ WARNING:
Remove fuel cap slow-
ly when refueling.
This engine is certified to operate on
unleaded gasoline. Before operation,
gasoline must be mixed with a good quality
synthetic 2-cycle air-cooled engine oil. We
recommend Husqvarna brand oil. If you do
not use this oil, use a good quality synthetic
2-cycle air-cooled oil designed to be mixed at
a ratio of 50:1. A 50:1 ratio is obtained by
mixing 2.6 ounces of oil with 1 gallon of
unleaded gasoline. DO NOT USE
automotive or boat oil. These oils will cause
engine damage. When mixing fuei follow the
instructions prh_ted on the container. Always
read and follow the safety rules listed under
HANDLE FUEL WITH CAUTION.
IMPORTANT
Experience indicates that alcohol blended fuels
(called gasohol or using ethanol or methanol)
can attract moisture which leads to separation
and formation of acids during storage. Acidic
gas can damage the fuel system of an engine
while in storage. To avoid engine problems,
empty the fuei system before storage for 30
days or longer. Drain the gas tank, start the
engine and let it run until the fuel lines and
carburetor are empty. Use fresh fuel next
season. Never use engine or carburetor
cleaner products in the fuel tank or permanent
damage may occur.
BAR AND CHAIN LUBRICATION
The bar and chain require continuous _ubri-
cation. Lubrication is provided by the auto-
matic oiler system when the oil tank is kept
filled. Lack of oil will quickly ruin the bar and
chain. Too little oil will cause overheating
shown by smoke coming from the chain and/
or discoloration of the bar. In freezing weather
oil will thicken, making it necessary to thin bar
and chain oil with a small amount (5 to 10%) of
#t Diesel Fuel or kerosene.
Bar and chain oil must be free flowing for the oil
system to pump enough oil for adequate lu-
brication.
Genuine Husqvarna bar and chain oil is rec-
ommended to protect your unit against exces-
sive wear from heat and friction. Husqvarna eil
resists high temperature thinning.
• Never use waste oil for bar and chain lu-
brication.
• Always stop the engine before removing
the oil cap.
Oil cap ..
//\\ Fuel mix cap
R2_WAHNIN_: The chain must not
move when the engine runs at idle speed. If
the chain moves at idle speed refer to CAR-
BURETOR ADJUSTMENT within this
manual. Avoid contact with the muffler. A hot
muffler can cause serious burns.
To stop the engine move the ON/STOP
switch to the STOP position.
To start the engine hold the saw firmly on
the ground as illustrated. Make sure the
chain is free to turn without contacting any
object.
Use only 15-18 inches (40-45 cm) of
rope per pull.
Hold saw firmly while pulling starter rope.
Starter rope handle
Left hand
on front
handle
Righ_ foot through rear handle
9