McCulloch 250 B - Manual (Page 9)

9
OPERATION
WARNING: Be sure to read the fuel
information in the safety rules before you be-
gin. If you do not understand the safety rules,
do not attempt to fuel your unit. Contact an au-
thorised service dealer.
FUELING ENGINE
WARNING:
Remove fuel cap slowly
when refueling.
This engine is certified to operate on unleaded
petrol. Before operation, petrol must be mixed
with a good quality 2-cycle air-cooled engine oil.
We recommend McCulloch brand oil mixed at a
ratio of 40:1 (2.5%). A 40:1 ratio is obtained by
mixing 5 liters of unleaded petrol with 0,125 liter
of oil. DO NOT USE automotive oil or boat oil.
These oils will cause engine damage. When
mixing fuel, follow instructions printed on oil con-
tainer. Once oil is added to petrol, shake con-
tainer momentarily to assure that the fuel is thor-
oughly mixed. Always read and follow the
safety rules relating to fuel before fueling your
unit.
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 fuel system before storage for 30
days or longer. Drain the gas tank, start the en-
gine and let it run until the fuel lines and carbure-
tor are empty. Use fresh fuel next season. Nev-
er use engine or carburetor cleaner products in
the fuel tank or permanent damage may occur.
HOW TO STOP YOUR UNIT
S To stop the engine, move the ON/STOP
switch to the STOP position.
ON/STOP
Switch
HOW TO START YOUR UNIT
WARNING: Avoid any contact with the
muffler. A hot muffler can cause serious burns.
STARTING A COLD ENGINE (or a
warm engine after running out of fuel)
Starting position
NOTE: The throttle lock--out is designed to
prevent unintentional use of the throttle trig-
ger. The lock--out must be pressed with the
palm of your hand as you grip the throttle han-
dle before the trigger can be used.
1. Set unit on a flat surface.
2. Move ON/STOP switch to the ON position.
3. Slowly press the primer bulb 6 times.
4. Move choke lever to FULL CHOKE posi-
tion.
Primer Bulb
Choke
Lever
Starter
Handle
5. Set the throttle to the start position by first
pressing the throttle lock--out and the
throttle trigger, then pressing the start
throttle button. Then release the throttle
lock--out and the throttle trigger, followed
by the start throttle button. The throttle
function is now activated.
NOTE: The start throttle button should stay
depressed, holding the throttle open. If not, re-
peat step 5. To return the engine to idle, press
the throttle lock--out and throttle trigger again.