Poulan Pro SM4218AVX - Manual (Page 9)

9
Guide Bar
Adjusting
Wheel
Cylinder Cover
Throttle
Lockout
Rear
Handle
Throttle
Trigger
Chain
Direction
of Travel
Chain
Catcher Clutch
Cover
Bar
Knob
Chain
Brake
ON/STOP SWITCH
The ON/STOP SWITCH is used to stop the
engine.
THROTTLE TRIGGER
The THROTTLE TRIGGER controls engine
speed.
THROTTLE LOCK--OUT
The THROTTLE LOCK--OUT must be
pressed before you can squeeze the throttle
trigger. This feature prevents you from acci-
dentally squeezing the trigger.
CHOKE/FAST IDLE LEVER
The choke and fast idle are set by pulling the
CHOKE/FAST IDLE LEVER out to the full ex-
tent for cold starting or after refueling. The
choke provides additional fuel to the engine
during cold starting.
PRIMER BULB
The PRIMER BULB circulates fuel to the car-
buretor to provide quicker starting.
CHAIN BRAKE
The chain brake is a device designed to stop
the chain if kickback occurs. The chain brake
activates automatically in the event of kick-
back. The chain brake activates manually if the
front hand guard is pushed forward. The chain
brake is disengaged by pulling the front hand
guard back toward the front handle as far as
possible.
CHAIN TENSION
It is normal for a new chain to stretch during the
first 15 minutes of operation. You should check
your chain tension frequently. See CHAIN
TENSION under the ASSEMBLY section.
WARNING: If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury to
the operator and/or damage the chain mak-
ing it unusable.
BEFORE STARTING ENGINE
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.
WARNING:
Be sure to read the fuel
handling information in the safety rules sec-
tion of this manual before you begin. If you do
not understand the fuel handling information
do not attempt to fuel your unit. Seek help
from someone that does understand the in-
formation or call the customer assistance
help line at 1-800-554-6723.
FUELING ENGINE
WARNING:
Remove fuel cap slow-
ly when refueling.
HELPFUL TIP
To obtain the correct oil mix
ratio, pour 3.2 ounces of
2--cycle synthetic oil into
one gallon of fresh gas.
This engine is certified to operate on un-
leaded gasoline. Before operation, gasoline
must be mixed with a good quality synthetic
2-cycle air-cooled engine oil designed to be
mixed at a ratio of 40:1. Poulan/WEED
EATER brand synthetic oil is recom-
mended. A 40:1 ratio is obtained by mixing
3.2 fluid ounces (95 ml) of oil with 1 gallon (4
liters) of unleaded gasoline. Included with this
saw is a 3.2 ounce (95 ml) container of Poulan/
WEED EATER brand synthetic oil. Pour the
entire contents of this container into 1 gallon (4
liters) of gasoline to achieve the proper fuel
mixture. DO NOT USE automotive or marine
oil. These oils will cause engine damage.
When mixing fuel follow the instructions
printed on the container. Always read and
follow the safety rules listed under HANDLE
FUEL WITH CAUTION.
CAUTION: Never use straight gasoline in
your unit. This will cause permanent engine
damage and void the limited warranty.
FUEL REQUIREMENTS
This engine requires the use of minimum 87
octane [R+M]/2 clean gasoline.
IMPORTANT
Use of alcohol blended fuels (called gasohol or
using ethanol or methanol) can cause major
engine performance and durability problems.