Poulan 3750 - Manual (Page 9)

9
FUELING & LUBRICATION
WARNING: Remove fuel cap slowly
when refueling.
FUELING ENGINE
This engine is certified to operate on unleaded
gasoline. Before operation, gasoline must be
mixed with a good quality 2-cycle air-cooled
engine oil. We recommend Poulan or Poulan
ProR brand oil. If you do not use this oil, use a
good quality 2-cycle air-cooled oil designed to
be mixed at a ratio of 40:1. A 40:1 ratio is
obtained by mixing 3.2 onces of oil with 1 gallon
of unleaded gasoline. Included with this saw is
a 3.2 ounce container of Poulan/Weed Eater
brand oil. Pour the entire contents of this
container into 1 gallon of gasoline to achieve
the proper fuel mixture.
DO NOT USE automotive or boat 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.
BAR AND CHAIN LUBRICATION
The bar and chain require continuous lubrica-
tion. Lubrication is provided by the automatic
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 discolor-
ation 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 #1 Diesel Fuel or
kerosene. Bar and chain oil must be free
flowing for the oil system to pump enough oil for
adequate lubrication.
Genuine PoulanR bar and chain oil is
recommended to protect your unit against
excessive wear from heat and friction.
PoulanR oil resists high temperature thinning.
If PoulanR bar and chain oil is not available,
use a good grade SAE 30 oil.
S
Never use waste oil for bar and chain lubri-
cation.
S Always stop the engine before removing the
oil cap.
IMPORTANT
Experience indicates that alcohol--blended
fuels (called gasohol or using ethanol or meth-
anol) can attract moisture which leads to sepa-
ration and formation of acids during storage.
Acidic gas can damage the fuel system of an
engine while in storage. To avoid engine prob-
lems, the fuel system should be emptied 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. See STORAGE section for addi-
tional information.
STARTING
WARNING: 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.
Hold saw firmly while pulling starter rope.
Use only 15”--18” of rope per pull.
Left hand
on front
handle
Starter rope handle
Right foot through rear handle
IMPORTANT POINTS TO REMEMBER
When pulling the starter rope, do not use the full
extent of the rope as this can cause the rope to
break. Do not let starter rope snap back. Hold
the handle and let the rope rewind slowly.
For cold weather starting, start the unit at
FULL CHOKE; allow the engine to warm up
before squeezing the throttle trigger.
NOTE : Do not cut material with the choke/
fast idle lever at the FULL CHOKE position.
STARTING A COLD ENGINE (or a
warm engine after running out of
fuel)
S Move ON/STOP switch to the ON position.
S Pull the choke/fast idle lever out to the full
extent.
ON/STOP
SWITCH
ON
STOP
OFF FULL
CHOKE/FAST IDLE LEVER
Choke/Fast
Idle Lever
(SIDE VIEW)
S Press the throttle lock with your right hand.
Squeeze and hold the throttle trigger;
Press and hold the fast idle lock with your
forefinger; release the throttle trigger.