STORAGE
SERVICE INTERVALS
STOPPING
STARTING
LAMPS
PERIODIC SERVICE
NO parts
time
Every day
First 50 hours
Every 100 hours Every 300 hours
1
2
3
4
5
Radiator
Crankcase oil
Air cleaner
Fuel filter
Fuel tank
Check
Supply
Clean
*
Check and clean often, especially when engine is used in a dusty place.
*
RADIATOR
ENGINE OIL
OIL FILTER
FUEL FILTER
AIR CLEANER
FAN BELT
PULLEY
HOISTING UP THE ENGINE
START
OIL SIGNAL
To start the engine, do the following:
Set the speed control lever to the
“START” position.
Fig.A
Fig.B
Push the start handle in and turn it a
little until you feel some resistance.
At this point, if the start handle
assumes the position pictured in
Fig.B, re-insert it as shown in Fig.A.
Next, raise the compression release
lever (decompression lever) with
your left hand as illustrated and turn
the start handle. When the engine
starts to turn over lightly, release the
compression release lever and turn
the start handle with more force and
the engine will start.
CAUTIONS :
(1) Be absolutely sure not to release your hand from the
start handle right after the engine has started. The
start handle will free itself after the engine has
started. It is very dangerous to release your hand from
the start handle before the engine is running.
(2) After the engine is started, see the oil signal. If the
top of it should not turn blue but remain red, and yet
air cleaner should emit smoke, immediately stop the
engine. The engine may be turning reversely.
(3) Run the engine for four or five minutes to fully lubri-
cate the individual parts of the engine before put-
ting it into operation. Note that a brand-new engine
needs to be run 40 to 50 hours of light-duty opera-
tion to break in the individual parts of the engine
well.
3
The engine is stopped by setting the speed control
lever to the “STOP” position.
NOTE :
1
When stopping the engine, never touch the
compression release lever, or the valve train
will be damaged.
When the engine is not to be used for a
long time, store it after taking the
following precautions:
(1) Turn the fuel cock lever to the “C”
(closed) position to shut off fuel,
drain all the water and oil and clean
the various part of the engine.
(2) Place a cover on the engine protect it from
dust, and move it to a dry, clean place for
storage.
CAUTION :
1
Be sure to cover the engine after the
engine has cooled off.
(3) Set the start handle to the compression
position to keep humidity out of the cylinders.
NOTE :
1
When the temperature falls below 0ºC, be
sure to drain coolant water from the ra-
diator even if the engine is to be used again
soon or the cylinder head will crack.
3
(1) In order to completely drain coolant
water from the radiator, open the
drain cock at the bottom of the
cylinder head, remove the pressure
cap and turn over the engine several
times.
(2) T o p r e v e n t t h e r a d i a t o r f r o m
becoming clogged, remove the
radiator net from time to time and
take off any dust and dirt from the
radiator and the net with a soft brush,
compressed air, or pressured water,
as illustrated.
(3) Do not remove the pressure cap
during or right after operation, or hot
water may gush out and scald the
operator.
Change the type of engine oil according
to the ambient temperature, referring to
the chart.
CC or CD class (according to API
classification) oil is recommended.
Summer
Spring/Fall
Winter
above 20ºC
5 to 20ºC
below 5ºC
All seasons
SAE30
SAE20
SAE10W or 10W-30
SAE10W or 10W-30
Clean the oil filter after the first 50 hours
of operation and thereafter every 100
hours. To clean:
(1) Remove the oil filter and drain all the
oil from the crankcase.
(2) Rinse the oil filter and the inside of
the crankcase with light oil.
(3) Refit the oil filter and refill the
crankcase with oil until the oil level
reaches the mark on the oil level
gauge.
The top of the oil signal remains red
while the engine is stopped, and turns
blue when the engine is started. This
indicates the oil pump is functioning
normally. If it should not turn blue but
remain red when the engine is started,
immediately stop the engine, or the
engine will seize up.
Clean the fuel filter every 100 hours of
operation.
(1) Remove the retaining ring from the
top of the filter cup and take off the
filter cup. Remove any dust or water
in the filter cup.
(2) Take out the element by pulling it
downward slowly. Rinse the element
with new fuel. Take much care when
handling the element because it is
very fragile.
NOTE :
1
If the element should have holes,
replace it with a new one. A damaged
element will reduce the service life
of the nozzle and injection pump.
Clean the air cleaner every 100 hours of
operation. When the engine is operated
in a dusty place, be sure to check the air
cleaner every day and clean it as
necessary.
(1) Remove the air cleaner and remove
the nuts from the top. Then take out
the element and rinse it with light oil,
shaking the element in the oil to
allow it to permeate the element.
(2) Clean the oil pan with light oil when
there is dust or sand deposits in it.
(3) After cleaning, pour a specified
quantity of oil into the oil pan and
refit it to the engine.
The tension of the fan belt should be taut
enough. If the belt is pressed down with
the finger between two pulleys, the
deflection should be about 5 to 10mm.
To tighten the fan belt, first loosen the
Bolt (10 mm bolt), and determine the
location of the tension pulley, and then
tighten the Bolt to fix the fan belt.
IMPORTANT :
1
If the engine is used with the belt
tension too weak, the belt would not
only slip and decrease the cooling
effect of the fan, but also shorten the
life of belt. Please always check the
tension of belt and maintain the
proper tautness.
CAUTION :
1
Adjustment and check of
the fan belt should be done
when the engine is not run-
ning.
3
To achieve the most efficiency, the
pulley must be a size most appropriate
for the machine to be driven by the
engine. If the size of the pulley is not
suited to the machine, the engine will
emit black fumes and output will
decrease, not only lowering operating
efficiency, but also reducing the life of
the engine.
To select the proper pulley size, use the
following formula :
1
Engine pulley size:
Machine RPM
Machine pulley size
×
Engine RPM
1
Machine pulley size:
Engine RPM
Engine pulley size
×
Machine RPM
To hoist up the engine, remove the red
cap from the top of the engine and screw
in the supplied hook bolt all the way.
CAUTION :
1
Make sure that the hook
bolt is screwed all the way.
3
Electrical Connection of Lamps
The lamp can be turned on any time while the engine is in operation.
If you use LAMP SWITCH (optional), install wiring as shown in Fig. A.
Switch "0"OFF, "1"high beam, "2"low beam.
If you do not use LAMP SWITCH (optional), remove WIRE HARNESS 2,
LAMP SWITCH and then install wiring as shown in Fig. B.
Bulb fitting direction
When changing the bulb, please point the projection of the bulb to
upward, and locate it into the groove of the bulb holder.
