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MAINTENANCE 29
Cooling System Cleaning
Before each use, check that the air inlet (rotary)
screen (inside A) is free from grass and debris and
clean if necessary. E
very 100 hours of operation,
check and clean the cooling fins and inside of en-
gine shrouds to remove grass, chaff or dirt clogging
the cooling system and causing overheating. When
cleaning, remove the air cleaner (inside E) loosen
the bolts (C), (D), and then, remove the fan housing
(B).
CAUTION
Do not run engine before all cooling system
parts are reinstalled to keep cooling and car-
buretion as intended.
CAUTION
Bend the engine shroud (regulator side) [A]
only within the shown range [B] (70°).
[Bolts Size, Tightening Torque]
Bolts
Size
Length Tightening Torque
C
M6 16 mm
8.8 N·m (0.9 kgf·m, 78 in·lb)
D M6 22 mm
8.8 N·m (0.9 kgf·m, 78 in·lb)
[B] = 70°
31
MAINTENANCE
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