1W1508 CYLINDER HEAD GP ENGINE S/N 70V16452-17952 PART OF 4N2270 CYLINDER HEAD 621B WHEEL TRACTOR

BASIC ENGINE

CYLINDER HEAD GP

0. 1W-1508 CYLINDER H
1. 4W-5311 CYLINDER H
2. 4W-5311 CYLINDER H
3. 4W-5197 CYLINDER H
4. 4W-5317 CYLINDER H
5. 7W-0008 CYLINDER H
6. 7W-0010 CYLINDER H

DAMPER GP

7. 4P-5893 DAMPER GP

VALVE MECHANISM GP

8. 4N-2271 VALVE MECH
9. 4N-2271 VALVE MECH
0. INFORMATION

WHEEL TRACTOR 621B WHEEL TRACTOR 45P
621B TRACTOR / POWERSHIFT / 45P02712-UP (MACHINE) POWERED BY 3406 ENGINE SEBP1266 621B 45P (1973)

BASIC ENGINE

CYLINDER HEAD GP

1W-5678 CYLINDER HEAD GP

1W-5281 CYLINDER HEAD GP

1W-1508 CYLINDER HEAD GP

4W-5311 CYLINDER HEAD GP

4W-5197 CYLINDER HEAD AS

#SEBP12660040

1W-1508: CYLINDER HEAD GP

CYLINDER HEAD GP

1W1508 CYLINDER HEAD GP
ENGINE S/N 70V16452-17952
PART OF 4N2270 CYLINDER HEAD

c528871 SEBP1266

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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.	2W-2622	[12]	VALVE-INLET
13.	1W-3860	[12]	VALVE-EXHAUST
	A		NOT PART OF THIS GROUP
	R		REMFG PART MAY BE AVAILABLE

#SEBP12660041

4W-5311: CYLINDER HEAD GP

CYLINDER HEAD GP

4W5311 CYLINDER HEAD GP*R
ENGINE S/N 70V17953-21628
4W5197-PAGE 12.06
PART OF 4N2270 CYLINDER HEAD

c473002 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

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

#SEBP12660042

4W-5311: CYLINDER HEAD GP

CYLINDER HEAD GP

4W5311 CYLINDER HEAD GP*R
ENGINE S/N 70V21629-UP
7W0008-PAGE 12.08
PART OF 4N2270 CYLINDER HEAD

c347636 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	7W-0008 CY	[1]	CYLINDER HEAD GP
2.	2N-5775	[12]	DOWEL
3.	4N-2803	[24]	GUIDE-VALVE
4.	2W-2622	[12]	VALVE-INLET
5.	2A-4429	[48]	LOCK-RETAINER
6.	6N-7154	[24]	ROTOCOIL AS
7.	4N-5906	[24]	SPRING-VALVE
8.	1W-3860	[12]	VALVE-EXHAUST
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP12660043

4W-5197: CYLINDER HEAD AS

CYLINDER HEAD AS

4W5197 CYLINDER HEAD AS
ENGINE S/N 70V17953-21628
PART OF 4W5317 & 4W5311 CYLINDER HEADS
FIELD REPLACEMENT ORDER 4W5317-PAGE 12.07

c472999 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	3B-0645	[12]	PLUG-CUP
2.	1W-5283	[12]	INSERT-VALVE SEAT (EXHAUST)
3.	4N-5893	[12]	INSERT-INLET
4.	2M-6471	[1]	PLUG-CUP
5.	3B-0623	[10]	PLUG-CUP

#SEBP12660044

4W-5317: CYLINDER HEAD AS

CYLINDER HEAD AS

4W5317 CYLINDER HEAD AS*R
ENGINE S/N 70V17953-21628
4W5197-PAGE 12.06
FIELD REPLACEMENT FOR 4W5197-PAGE 12.06

c325439 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4W-5197 Y	[1]	CYLINDER HEAD AS
2.	2N-5775	[12]	DOWEL
3.	4N-2803	[24]	GUIDE-VALVE
	Y		SEPARATE ILLUSTRATION

#SEBP12660045

7W-0008: CYLINDER HEAD GP

CYLINDER HEAD GP

7W0008 CYLINDER HEAD AS
ENGINE S/N 70V21629-UP
PART OF 4W5311 & 7W0010 CYLINDER HEADS
FIELD REPLACEMENT ORDER 7W0010-PAGE 12.09

c539324 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	3B-0645	[12]	PLUG-CUP
2.	1W-5283	[12]	INSERT-VALVE SEAT (EXHAUST)
3.	4N-5893	[12]	INSERT-INLET
4.	2M-6471	[1]	PLUG-CUP
5.	3B-0623	[10]	PLUG-CUP
6.	8T-6762	[1]	PLUG-PIPE

#SEBP12660046

7W-0010: CYLINDER HEAD AS

CYLINDER HEAD AS

7W0010 CYLINDER HEAD AS*R
ENGINE S/N 70V21629-UP
7W0008-PAGE 12.08
FIELD REPLACEMENT FOR 7W0008-PAGE 12.08

c348026 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	7W-0008 Y	[1]	CYLINDER HEAD GP
2.	2N-5775	[12]	DOWEL
3.	4N-2803	[24]	GUIDE-VALVE
	Y		SEPARATE ILLUSTRATION

#SEBP12660047

4P-5893: DAMPER GP

DAMPER GP

4P5893 DAMPER GP

c666131 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	7E-9520	[1]	DAMPER AS-VIBRATION
	5M-9709	[2]	PLUG-EXPANSION
2.	1A-3203	[6]	BOLT (5/8-18X4.75IN)
3.	4N-2109	[1]	ADAPTER-DAMPER
4.	9Y-8870	[1]	PLATE

#SEBP12660048

4N-2271: VALVE MECHANISM GP

VALVE MECHANISM GP

4N2271 VALVE MECHANISM GP
ENGINE S/N 70V21609-UP
4N1045-PAGE 13

c576201 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-1045 Y	[2]	ROCKER ARM GP
2.	101-1817	[6]	BRIDGE AS-EXHAUST
	101-1819	[1]	SEAT-WEAR
3.	9L-7712	[1]	NUT
4.	2N-5842	[1]	SCREW
5.	101-7788	[12]	LIFTER AS-VALVE
6.	2P-9845	[6]	BOLT
7.	5H-1504	[6]	WASHER-HARD
8.	4W-5998	[12]	ROD AS-PUSH
9.	6N-6872	[12]	SPRING-GUIDE
10.	101-1816	[6]	BRIDGE AS-INTAKE
			(EACH INCLUDES)
	101-1819	[1]	SEAT-WEAR
11.	2N-5842	[1]	SCREW
12.	9L-7712	[1]	NUT
	Y		SEPARATE ILLUSTRATION

#SEBP12660049

4N-2271: VALVE MECHANISM GP

VALVE MECHANISM GP

4N2271 VALVE MECHANISM GP
ENGINE S/N 70V10346-21608
4N1045-PAGE 13

c302496 SEBP1266

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Parts for your 621B WHEEL TRACTOR:

Pos.	Part No	Qty	Parts name
1.	4N-1045 CY	[2]	ROCKER ARM GP
2.	4N-5611 C	[6]	BRIDGE AS-EXHAUST
			(EACH INCLUDES)
	4N-5607 C	[1]	SEAT-WEAR
3.	2N-5842	[1]	SCREW
	9L-7712	[1]	NUT
4.	2P-9845	[6]	BOLT
	5H-1504	[6]	WASHER-HARD
5.	4N-5609	[12]	ROD-VALVE PUSH
6.	6N-6872 C	[12]	SPRING-GUIDE
7.	6N-4589 CR	[12]	LIFTER AS-VALVE
8.	4N-5612 C	[6]	BRIDGE AS-INTAKE
			(EACH INCLUDES)
	4N-5607 C	[1]	SEAT-WEAR
9.	2N-5842	[1]	SCREW
	9L-7712	[1]	NUT
	C		CHANGE FROM PREVIOUS TYPE
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION