Use and Care Manual

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MAINTENANCE 29

Cooling System Cleaning

Before each use, chec

k that the air inlet (rotary)

screen (inside A) is free from grass and debris and

clean if necessary. When checking or cleaning the

air inlet screen, rem

ove air inlet guard (A). Every 100

hours of operation, check and clean the cooling fins

and inside of engine shrouds to remove grass, chaff

or dirt clogging th

e cooling system and causing over-

heating. When cleaning, remove the air cleaner (in-

side 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 inte

nded.

CAUTION

Bend the engine shroud (regulator side) [A]

only within the shown range [B] (70°).

[Bolts Size, Tightening Torque]

Bolts

Size

Length Tightening Torque

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°

MAINTENANCE 29

Cooling System Cleaning

Before each use, chec

k that the air inlet (rotary)

screen (inside A) is free from grass and debris and

clean if necessary. When checking or cleaning the

air inlet screen, rem

ove air inlet guard (A). Every 100

hours of operation, check and clean the cooling fins

and inside of engine shrouds to remove grass, chaff

or dirt clogging th

e cooling system and causing over-

heating. When cleaning, remove the air cleaner (in-

side 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 inte

nded.

CAUTION

Bend the engine shroud (regulator side) [A]

only within the shown range [B] (70°).

[Bolts Size, Tightening Torque]

Bolts

Size

Length Tightening Torque

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°

MAINTENANCE 29

Cooling System Cleaning

Before each use, chec

k that the air inlet (rotary)

screen (inside A) is free from grass and debris and

clean if necessary. When checking or cleaning the

air inlet screen, rem

ove air inlet guard (A). Every 100

hours of operation, check and clean the cooling fins

and inside of engine shrouds to remove grass, chaff

or dirt clogging th

e cooling system and causing over-

heating. When cleaning, remove the air cleaner (in-

side 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 inte

nded.

CAUTION

Bend the engine shroud (regulator side) [A]

only within the shown range [B] (70°).

[Bolts Size, Tightening Torque]

Bolts

Size

Length Tightening Torque

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°

30 MAINTENANCE

Before each use, check that the air inlet (rotary)

screen (inside A) is free from grass and debris and

clean if necessary. When checking or cleaning the

air inlet screen, remove air inlet guard (A).

(For Inspection Port Model)

Every 25 hours of operation, detach air cleaner cover

and check inside shroud through the inspection

ports. Clean or blow inside debris or dust if needed.

Every 100 hours of operation, check and clean the

cooling ns and inside of engine 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).

Inspection Ports