4N2270 CYLINDER HEAD GROUP*R S/N 70V16452-17952 1W1508-PAGE 38C 621B WHEEL TRACTOR

BASIC ENGINE

CYLINDER HEAD GP

0. 4N-2270 CYLINDER H
1. 4N-2270 CYLINDER H
2. 4N-0749 CYLINDER H
3. 6N-9943 CYLINDER H
4. 7N-1302 CYLINDER H
5. 7N-1302 CYLINDER H
6. 1W-5678 CYLINDER H
7. 1W-5281 CYLINDER H
8. 1W-1508 CYLINDER H
9. 4W-5311 CYLINDER H
0. INFORMATION

WHEEL TRACTOR 621B WHEEL TRACTOR 35V
3406 ENGINE 35V00001-UP (MACHINE) ZEBP0576 621B 35V (1974)

BASIC ENGINE

CYLINDER HEAD GP

4N-2270 CYLINDER HEAD GP

4N-0749 CYLINDER HEAD

6N-9943 CYLINDER HEAD GP

#ZEBP05760060

4N-2270: CYLINDER HEAD GP

CYLINDER HEAD GP

4N2270 CYLINDER HEAD GROUP*R
S/N 70V16452-17952
1W1508-PAGE 38C

c313921 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-7253	[6]	GASKET
2.	2S-2251	[6]	SEAL
3.	2W-9758	[6]	ADAPTER AS.
4.	5F-4899	[12]	BOLT
5.	1W-1508 CY	[1]	HEAD GROUP
6.	6L-7442	[6]	STUD
7.	3J-5390	[3]	PLUG
8.	3J-5389	[2]	PLUG
9.	2W-7983 C	[1]	GASKET
10.	4S-6137	[11]	STUD 8.13CM(3.20IN.)LONG
11.	2H-3750	[20]	BOLT
	5H-1504	[20]	WASHER
12.	4W-1055 C	[24]	SEAL
13.	3J-5389	[1]	PLUG
			(FOR USE WITHOUT AIR COMPRESSOR)
14.	7L-0520	[1]	STUD 5.08CM(2IN.)LONG
15.	3S-5496	[2]	SEAL
16.	7M-7410	[1]	PLUG
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#ZEBP05760061

4N-2270: CYLINDER HEAD GP

CYLINDER HEAD GP

4N2270 CYLINDER HEAD GP*R
S/N 70V17953-UP
4W5311-PAGE 38D

ZEBP05760061 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name	Comments

#ZEBP05760062

4N-0749: CYLINDER HEAD

CYLINDER HEAD

4N749 CYLINDER HEAD
PART OF 4N2260 CYLINDER HEAD GROUP SHOWN ON PAGE 34 AND 35
SERIAL NO 70V1 TO 70V2773

c150840 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	2N-5571 C	[24]	ROTOCOIL
3.	2A-4429	[48]	LOCK
4.	4N-5079	[1]	HEAD ASSEM.
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT
	4S-8898 H	[12]	INSERT .005 in. (.13mm)oversize
	4S-8899 H	[12]	INSERT .010 in. (.26mm)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT
	4S-8902 H	[12]	INSERT .005 in. (.13mm)oversize
	4S-8903 H	[12]	INSERT .010 in. (.26mm)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	4N-5654	[12]	VALVE (intake)
13.	4N-5653	[12]	VALVE (exhaust)
	C		INDICATES CHANGE
	H		NOT PART OF 4N5079 ASSEM.

#ZEBP05760063

6N-9943: CYLINDER HEAD GP

CYLINDER HEAD GP

6N9943 CYLINDER HEAD GROUP
PART OF 4N2260 CYLINDER HEAD GROUP SHOWN ON PAGE 36
SERIAL NO 70V2774 TO 70V3144

c161295 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	2N-5571	[24]	ROTOCOIL
3.	2A-4429	[48]	LOCK
4.	6N-9938	[1]	HEAD ASSEM.
			(Includes)
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT
	4S-8898 H	[12]	INSERT .13mm(.005in.)oversize
	4S-8899 H	[12]	INSERT .26mm(.010in.)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT
	4S-8902 H	[12]	INSERT .13mm(.005in.)oversize
	4S-8903 H	[12]	INSERT .26mm(.010in.)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	4N-5654	[12]	VALVE (intake)
13.	4N-5653	[1]	VALVE (exhaust)
	H		NOT PART OF 6N9938 ASSEM.

#ZEBP05760064

7N-1302: CYLINDER HEAD GP

CYLINDER HEAD GP

7N1302 CYLINDER HEAD GROUP
PART OF 4N2260 CYLINDER HEAD GROUP SHOWN ON PAGE 36A
SERIAL NO 70V3145 TO 70V3697

c162996 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	2N-5571	[24]	ROTOCOIL
3.	2A-4429	[48]	LOCK
4.	7N-1303 R	[1]	HEAD ASSEM.
			(Includes)
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT (intake)
	4S-8898 H	[12]	INSERT .13mm(.005in.)oversize
	4S-8899 H	[12]	INSERT .26mm(.010in.)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT (exhaust)
	4S-8902 H	[12]	INSERT .13mm(.005in.)oversize
	4S-8903 H	[12]	INSERT .26mm(.010in.)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	4N-5654	[12]	VALVE (intake)
13.	4N-5653	[1]	VALVE (exhaust)
	H		NOT PART OF 7N1303 ASSEM.
	R		REMFG PART MAY BE AVAILABLE

#ZEBP05760065

7N-1302: CYLINDER HEAD GP

CYLINDER HEAD GP

7N1302 CYLINDER HEAD GROUP
SERIAL NO 70V3698-13900, 14002-14150, 14325-15907, 16325-16451
PART OF 4N2260 & 4N2270 CYLINDER HEADS

c213963 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	6N-7154 C	[24]	ROTOCOIL
3.	2A-4429	[48]	LOCK
4.	7N-1303 R	[1]	HEAD ASSEM.
			(Includes)
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT (intake)
	4S-8898 J	[12]	INSERT .13mm(.005in.)oversize
	4S-8899 J	[12]	INSERT .26mm(.010in.)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT (exhaust)
	4S-8902 J	[12]	INSERT.13mm(.005in.)oversize
	4S-8903 J	[12]	INSERT.26mm(.010in.)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	4N-5654	[12]	VALVE (intake)
13.	7N-4580 C	[12]	VALVE (exhaust)
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE
	J		NOT PART OF 7N1303 ASSEM.

#ZEBP05760066

1W-5678: CYLINDER HEAD GP

CYLINDER HEAD GP

1W5678 CLYLINDER HEAD GP
S/N 70V13901-14001, 15908-16324
PART OF 4N2270 CYLINDER HEAD

c301728 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	6N-7154	[24]	ROTOCOIL ASSEM.
3.	2A-4429	[48]	LOCK
4.	7N-1303 R	[1]	HEAD ASSEM.
			(Includes)
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT (intake)
	4S-8898 J	[12]	INSERT.13mm(.005in.)oversize
	4S-8899 J	[12]	INSERT.26mm(.010in.)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT (exhaust)
	4S-8902 J	[12]	INSERT.13mm(.005in.)oversize)
	4S-8903 J	[12]	INSERT.26mm(.010in.)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	1W-3859	[12]	VALVE (intake)
13.	1W-3860	[12]	VALVE (exhaust)
	J		NOT PART OF 7N1303 ASSEM.
	R		REMFG PART MAY BE AVAILABLE

#ZEBP05760067

1W-5281: CYLINDER HEAD GP

CYLINDER HEAD GP

1W5281 CYLINDER HEAD GP
S/N 70V14151-14324
PART OF 4N2270 CYLINDER HEAD

c301730 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING
2.	6N-7154	[24]	ROTOCOIL ASSEM.
3.	2A-4429	[48]	LOCK
4.	7N-1303 R	[1]	HEAD ASSEM.
			(Includes)
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT (intake)
	4S-8898 J	[12]	INSERT.13mm(.005in.)oversize
	4S-8899 J	[12]	INSERT.26mm(.010in.)oversize
7.	2M-6471	[1]	PLUG
8.	9S-9699	[12]	INSERT (exhaust)
	4S-8902 J	[12]	INSERT.13mm(.005in.)oversize
	4S-8903 J	[12]	INSERT.26mm(.010in.)oversize
9.	3B-0623	[10]	PLUG
10.	4N-2803	[24]	GUIDE
11.	3B-0645	[12]	PLUG
12.	4N-5654	[12]	VALVE (intake)
13.	7N-4580	[12]	VALVE (exhaust)
	J		NOT PART OF 7N1303 ASSEM.
	R		REMFG PART MAY BE AVAILABLE

#ZEBP05760068

1W-1508: CYLINDER HEAD GP

CYLINDER HEAD GP

1W1508 CYLINDER HEAD GROUP
SERIAL NO. 70V16452-17952
PART OF 4N2270 CYLINDER HEAD

c178507 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-5906	[24]	SPRING-VALVE
2.	6N-7154	[24]	ROTOCOIL AS
3.	2A-4429	[48]	LOCK-RETAINER
4.	1W-1509 R	[1]	CYLINDER HEAD AS
5.	2N-5775	[12]	DOWEL
6.	4N-5893	[12]	INSERT-INLET
	4S-8898 A	[12]	INSERT .13MM(.005IN)OVERSIZE
	4S-8899 A	[12]	INSERT .26MM(.01IN)OVERSIZE
7.	2M-6471	[1]	PLUG-CUP
8.	9S-9699	[12]	INSERT-SEAT (EXHAUST)
	4S-8902 A	[12]	INSERT .13MM(.005IN)OVERSIZE
	4S-8903 A	[12]	INSERT .26MM(.01IN)OVERSIZE
9.	3B-0623	[10]	PLUG-CUP
10.	4N-2803	[24]	GUIDE-VALVE
11.	3B-0645	[12]	PLUG-CUP
12.	4N-5654	[12]	VALVE-INLET
13.	7N-4580	[12]	VALVE-EXHAUST
	A		NOT PART OF THIS GROUP
	R		REMFG PART MAY BE AVAILABLE

#ZEBP05760069

4W-5311: CYLINDER HEAD GP

CYLINDER HEAD GP

4W5311 CYLINDER HEAD GP*R
S/N 70V17953-21628
4W5197-PAGE 38F
PART OF 4N2270 CYLINDER HEAD

c325437 ZEBP0576

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4W-5197 Y	[1]	HEAD AS.
2.	2N-5775	[12]	DOWEL
3.	4N-2803	[24]	GUIDE
4.	2W-2622	[12]	VALVE (INLET)
5.	2A-4429	[48]	LOCK
6.	6N-7154	[24]	ROTOCOIL AS.
7.	4N-5906	[24]	SPRING
8.	1W-3860	[12]	VALVE (EXHAUST)
	Y		SEPARATE ILLUSTRATION