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8
OPERATING INSTRUCTIONS
Experience is very important when running the 150 saw. A
skilled worker is highly recommended. Always do an inspec-
tion of the saw before starting the engine. Check the fuel (H)
and oil level (A) per the enclosed engine manual. SAE 10W/30
oil and unleaded gasoline with an 87 or higher octane should
be used. Observe all safety regulations for the safe handling
of fuel. Always check the engine oil with the saw turned off,
completely lowered and the engine level! Do not screw the oil
dipstick into the oil ller neck to check the oil level. Check that
all controls are in good working order. Check for loose bolts or
nuts. Check for fuel or oil leaks.
WARNING
Do not leave the saw unattended while the engine
is running! Always secure the saw from movement
while unattended.
Insure all guards are secure, undamaged and properly in-
stalled.
To start the engine, turn the fuel valve (C) on by the carburetor
on the side of the engine. Raise the blade by pushing down on
the handle bar with both hands to the full and locked position.
Turn the engine kill switch (J) to the “ON” or “1” position. Move
the engine throttle lever (E) 1/3 of the way to the open position.
Close the engine choke lever (D). The closed choke position
enriches the fuel mixture for starting a cold engine. The open
choke position provides the correct fuel mixture for operation
after the engine starts and for restarting a warm engine. Start
the engine by pulling the rope handle (F) on the side of the en-
gine. After the engine starts, slowly open the choke. Allow the
engine to warm for a few minutes.
Open the engine throttle lever to full open position for maxi-
mum engine speed. Line up the saw with the cut line using the
white wheel on the front guide and the triangle pointer on the
back of the blade block. Push down on the saw handle and
pull the blade release lever to lower the blade in the concrete
slowly. Push the saw forward to cut keeping the front guide
wheel in the cut line. Push the saw at about half speed for
the rst 50 feet to allow the blade to develop good diamond
exposure or open up and promote full blade life. Increase
the forward speed of the saw until the blade and engine are
working at maximum efciency. Do not force the saw. When
approaching a wall, raise the front guide and use the triangle
guide at the back of the blade block to cut the last few feet. Do
not hit the blade block assembly against any object. Dam-
age may result. Push down on the back of the handle bar to
raise the saw out of the cut to the full locked position. Move the
engine throttle lever to the full closed position. Turn the engine
kill switch to “OFF” or “0” position.
WARNING
Do not operate saw if there is a fuel leak!
WARNING
Do not operate the saw unless all guards, safety
equipment and the engine kill switch are in place and
operational!
Always clean the blade block assembly thoroughly before stor-
ing the saw. Always close fuel valve before transporting. The
saw will leave two trails of concrete cuttings. Lightly sweep the
cutting parallel to the cut with a soft bristle broom. Do not walk
on the joints or transport equipment across the joints until
the concrete fully hardens.
Blade release lever
Handle locking pin
Blade block
Front guide
Check the air lter (G) and clean or replace if necessary.
Check for proper specication of blade and that the skid plate
operates properly. Check that the blade and skid plate are in
good condition. Check that the handle is in full upright position
and pinned. Check that the front guide is rotated to the forward
position. Make sure the work site is clean, well lit and hazard
free.
WARNING
ASPHYXIATION HAZARD
Running an engine in a conned or badly ventilated
area can result in injury or death due to asphyxiation
or carbon monoxide poisoning.
WARNING
Before each use, carefully inspect the 150 for any
damage to any of its parts and components. Pay
careful attention to any leakage of gasoline or oil.
Under no circumstance should the 150 or any of its
attachments be operated if you nd damage or are
suspicious that something appears to be damaged.