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4.
ENGINE OIL CHANGE (See Fig.
77
77
7
-
ww
ww
w,
ee
ee
e)
Initial oil change : After 20 hours of operation
Thereafter : Every 100 hours of operation
(1) When changing oil, stop the engine and loosen the drain
plug. Drain the used oil while the engine is warm. Warm
oil drains quickly and completely.
3. INSPECTING THE SPARK PLUG
(See Fig.
77
77
7
-
qq
qq
q)
(1) Clean off carbon deposits on the spark plug electrode
using a plug cleaner or wire brush.
(2) Check electrode gap. The gap should be 0.03 in. (0.7
mm to 0.8 mm). Adjust the gap, if necessary, by carefully
bending the side electrode.
(3) Refer to page 5 for the recommended oil.
Always use the best grade and clean oil. Contaminated
oil, poor quality oil and shortage of oil cause damage to
engine or shorten the engine life.
5. CLEANING FUEL STRAINER
(See Fig.
77
77
7
-
rr
rr
r)
(2) Re-install the drain plug before refilling oil.
To prevent injury, pay attention to the hot oil.
Make sure the fuel cap is tightly secured to avoid
spillage.
CAUTION
(1) Drain the fuel from the tank.
(2) Close the fuel cock and remove the fuel strainer.
(3) After removing dirt and water, wash the fuel strainer
with kerosene or gasoline.
(4) Reinstall securely to prevent leakage.
6. CLEANING AIR CLEANER
(See Fig.
77
77
7
-
tt
tt
t)
A dirty air cleaner element will cause starting difficulty, power
loss, engine malfunctions, and shorten engine life extremely.
Always keep the air cleaner element clean.
Air cleaner paper element and urethane foam can be take
out after removing knob and air cleaner cover.
When installing, set the paper element and urethane foam
on the air cleaner base.
Be sure to check the grommet is in position, and then
install the cover with knob tightened securely.
(See Fig.7
t)
Urethane Foam cleaning (See Fig.7 t e)
Wash and clean the urethane foam in kerosene.
Saturate in a mixture of 3 parts kerosene and 1 part
engine oil, and then squeeze to remove excess oil.
Clean urethane form every 50 hours.
Paper element (See Fig.7 t r)
Clean by tapping gently to remove dirt and blow off
dust. Never use oil. Clean paper element every 50
hours of operation, and replace element every 200
hours.
Clean and replace air cleaner elements more often
when operating in dusty environments.
7.
FUEL HOSE REPLACEMENT (See Fig.
77
77
7
-
yy
yy
y)
Replace the fuel hose every 1,000 hours or every year.
If fuel leaks from fuel hose, replace the fuel hose immediately.
Take extreme caution when replacing fuel
hose ; gasoline is extremely flammable.
WARNING
8.
CHECKING BOLTS, NUTS AND SCREWS
Retighten loose bolts and nuts.
Check for fuel and oil leaks.
Replace damaged parts with new ones.
9. CLEANING PUMP INSIDE
Turn the knob counterclockwise and open the casing
cover holder.
Pull the casing toward you, and then remove the casing
and the inner casing.
Clean the inside of pump casing and casing cover with
clean water.
WARNING
Flame Prohibited
WARNING
Flame Prohibited
Recommended Spark Plug : NGK BPR6ES
PKV401T . . . . . . . . . . . . . . . . 1.2 (0.32)
Oil capacity (Upper level) :
L(U.S.gal)
06.10.20, 8:09 PMPage 8