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34 MAINTENANCE
Cooling System Cleaning
Before each operation, check that the air inlet (ro,
tary) screen (A) is h'ee from grass and debris. Clean
the screen if necessary. Ever/100
hours of oper-
ago_o2__n
check and clean the cooling fins and the in-
side of engine shrouds to remove grass_chaff or dirt
clogging the cooling system and causing overheat-
ing. When cleaning, remove the air inlet screen (A),
the air cleaner cap (C) and the fan housing (B).
CAUTION
Do not run engine before all cooling system
parts are reinstalled to keep cooling and ¢ar-
buretion as intended.
Bolts Size,
htening Torque]
Bolts Size
Length Tighteningto_ue
5.9 N*m (0.6 kgf.m, 4_3
D
M6
12mm
fHb)
5.9 N-m (0.6 kgf'm, 4.3
E
M6
20ram
ft.lb)
s.9N-m (0 6 kO m,'413
....
M6
!2 mm fHb)
.F: Screws
STORAGE
STORAGE 35
Fuel System Draining
Engine to be stored over 30 days shouldbe com-
pletelydrained of fuel to prevent gum deposits form-
ing on essential carburetor parts, the fuel filter and
the tank.
• Put a pan under the carburetor and loosen the
drain screw of the carburetor to drain the gasoline
completely.
• Tighten the drain screw.
Gasoline is extremely flammable and can be
explosive under certain conditions,
Drain fuel before storing the equipment for
extended periods.
Drain gasoline in a well ventilated area away
from _ny source of flame or sparks, includ-
ing any appliances with a pilot light. Store
gasoline anan approved container in safe to-
cation,
• Clean every part of the engine.
• Be sure that the engine switch or switch key is
positioned at "OFF" position.
• Close the fuel valve and remove the sediment
bowl.
• Put a pan under the fuel valve to receive the
drained gasoline and open the fuel valve to drain
the gasoline from fuel tank completely.
• Install the sediment bowl.
49
A. Fuel Drain Screw
B. Pan
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