Makita EM4251 Service Manual download pdf (Page 34)

P 31 / 45

5 - 3 - 16 Carburetor and air cleaner

(1) Assemble the following parts.

Plate,

Choke plate

Air cleaner element

Carburetor

Gasket cap

Spacer

Air cleaner gasket

Breather pipe

Pipe

The tightening torque

for screw M5 x 68 : 2 - 4 N.m

(20 - 40 Kg.cm)

(1.4 - 2.9 ft.lb.)

<Note>

(a) When installing choke plate, be sure to keep choke lever at the fully closed position (lever touching

the upper lever stop.) Apply grease or silicone on choke coil plate after installing it.

Fig. 5 - 44

Screw

M5 x 68 : 2 pcs.

Plate

Choke plate

Choke lever

Air cleaner plate

O ringSpacer

Carburetor

gasket

Breather pipe

Check valve (1)

Pipe

Check valve plate

Check valve

O ring

Separator plate

Screw M5

with washer : 2 pcs.

Air cleaner cover

Fig. 5 - 45

VIEW "Z"

30 degrees to

40 degrees

Stopper (Lower)

Stopper (Upper)

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 47 48

Model: EM4250, EM4251 1
CONTENTS - 1/2 2
CONTENTS - 2/2 3
1. SPECIFICATIONS OF ENGINE 4
2. PERFORMANCE 5
MAXIMUM TORQUE 6
MAXIMUM HORSEPOWER 6
RECOMMENDABLE 6
HORSEPOWER RANGE 6
FUEL CONSUMPTION 6
3. FEATURES 7
P 5 / 45 8
P 6 / 45 9
Fig. 3-2 9
Fig. 3-3 9
P 8 / 45 11
4 - 4 Piston Rings 11
4 - 5 Cam Gear 11
4 - 6 Cooling System 11
4 - 7 Lubrication System 11
4 - 10 Air Cleaner 12
4 - 11 Decompression System 12
P 9 / 45 12
4 - 8 Ignition System 12
4 - 9 Carburetor 12
P 12 / 45 15
P 13 / 45 16
Return Pipe 16
Fig. 5-7 16
Fig. 5-8 16
P 15 / 45 18
P 16 / 45 19
Recoil side 20
P 18 / 45 21
P 20 / 45 23
P 21 / 45 24
P 22 / 45 25
P 23 / 45 26
P 24 / 45 27
P 25 / 45 28
5 - 3 - 4 Oil Case 28
P 26 / 45 29
5 - 3 - 5 Oil Case 29
5 - 3 - 6 Ignition coil 29
5 - 3 - 7 Blower housing 29
<Note> 29
P 27 / 45 30
5 - 3 - 8 Cam gear 30
P28 / 45 31
5 - 3 - 10 Cam gear cover 31
Fig. 5 - 41 32
P 31 / 45 34
6. MAGNETO 38
P 36 / 45 39
7 - 2 Inspection 39
8. Carburetor 40
P 38 / 45 41
P 39 / 45 42
8 - 2 - 1 Precautions 42
9. Recoil starter 43
9 - 2 Reassembling 44
P 42 / 45 45
9 - 4 Other guides 45
10. Trouble shooting 46
11. Installation 47
P 45 / 45 48
11 - 3 Exhaust gas discharge 48
11 - 4 - 1 Belt drive 48
11 - 4 - 2 Flexible coupling 48

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Makita EM4251 Service Manual Page 34

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