Tanaka THT-2120 User Manual

Model Number:

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THT-2120

HEDGETRIMMER

P/N 00020
Rev 002
Date 10-24-07

Nikko Tanaka Engineering U.S.A.,Ltd.• 1028 4th Street SW, Bldg B • Auburn, WA 98001 • Phone: [phone] • Fax: [phone]

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PARTS INFORMA TION

CYLINDER, PISTON, CRANKSHAFT, IGNITION • FIGURE 1

THT-2120

ITEM PART NUMBER DESCRIPTION QTY COMMENTS

1-1 1570650091 CAP,SPARK PLUG ASS'Y 1
1-2 0181166021 PLUG,SPARK 1
1-3 0010650090 SET,CYLINDER 1 Includes cylinder gasket
1-4 99416050201 SCREW,5X20/WS 2
1-7 0170650020 GASKET,CYLINDER 1
1-8 04100601210 RING,PISTON 1
1-9 0300650090 PISTON 1 Includes rings and circlips
1-10 03706500200 PIN,PISTON 1
1-11 03901620200 CIRCLIP,PISTON PIN 2
1-12 04606500801 CRANKSHAFT 1
1-13 99962081225 BEARING,NEEDLE,F-810 1
1-27 1532153390 COIL,IGNITION 1
1-28 99416040226 SCREW,WS,4X22 2
1-36 25006500200 TUBE,INSULATOR 1
1-37 1780650080 CORD,STOP COMPLETE 1 R107152~

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PARTS INFORMA TION

R

CRANKCASE, FLYWHEEL • FIGURE 2

THT-2120

ITEM PART NUMBE

2-21 0720650090 CRANKCASE ASS'Y 1
2-22 09006500200 GASKET,CRANKCASE 1
2-23 99966122206 SEAL,OIL,#TC12227 2
2-24 99961600100 BEARING,BALL,#6001 2
2-25 33000200210 SHIM,12.2X19X.10 1
2-25 33000200220 SHIM,12.2X19X.15 1
2-25 33000200230 SHIM,12.2X19X.20 1
2-25 33000200240 SHIM,12.2X19X.30 1
2-26 59900601200 CUSHION 1
2-30 99414050301 SCREW,5X30/S 3
2-31 1552152380 ROTOR,MAGNETO 1
2-32 99201080011 WASHER,8 1
2-33 99210080012 WASHER,S,8 1
2-34 99101080011 NUT,8 1
2-35 10002100200 BOLT,STUD,6X22 2

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DESCRIPTION QTY COMMENTS

Page 2

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PARTS INFORMA TION

Carburetor

see fig. 5 & 6

THT-2120

FUEL SYSTEM • FIGURE 3

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PARTS INFORMA TION

THT-2120

FUEL SYSTEM • FIGURE 3

ITEM PART NUMBER DESCRIPTION QTY COMMENTS

3-25 40306500200 GASKET,INTAKE 1
3-26 4040650090 SET,CARB INSULATOR 1 Includes gasket
3-27 99416050252 SCREW,5X25WS 2
3-30 40206500200 GASKET,CARBURETOR 1
3-33 99967015000 O-RING,P15 1
3-35 4230650081 BODY,CLEANER 1
3-36 47006500200 COLLAR 2
3-37 52806500200 LEVER,CHOKE 1 ~R233951
3-37 5280650T20 LEVER,CHOKE 1 R233952~
3-38 99204080030 WASHER,8 1
3-39 47601700200 BOARD,BLOW OVER CHECK 1
3-40 99210050012 WASHER,S,5 2
3-41 99011050602 SCREW,5X60 2
3-43 4460650020 ELEMENT,CLEANER 1
3-44 4520650091 COVER,CLEANER,W/BOLT 1
3-45 3800637C200 BOLT,CLEANER COVER 1
3-50 70053005130 PIPE,FUEL 1 ~R107151
3-50 2230650090 PIPE,FUEL,ASS'Y 1 R107152~
3-51 68000731201 CLIP 6.3 1
3-52 6750404280 FILTER,FUEL 1
3-53 5910650000 TANK,FUEL 1 ~T218560 One hole
3-53 5910661321 TANK,FUEL 1 ~U217438 Two hole
3-53 5910651A21 TANK,FUEL 1 U217439~ Three hole
3-54 5950650A90 CAP,TANK 1 ~T218560
3-54 5950656B90 CAP,FUEL BLACK,NON VENT 1 T218561~
3-55 65900801200 COLLAR 2
3-58 99463050185 BOLT,HEX 5X18P S 2
3-70 44225143800 PUMP,PRIMING ASS'Y 1 U217439~
3-77 7000250408 PIPE,FUEL,2.5x4x80 1 U217439~
3-78 7000250406 PIPE,FUEL,2.5X4X65 1 U217439~
3-79 53432710200 GROMMET,FUEL PIPE 1 U217439~
3-121 5640661190 VENT,AIR ASS'Y 1 U217439~
3-122 5650441020 PIPE,AIR VENT 1 U217439~
3-123 6460661290 VALVE 1 T218561~

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PARTS INFORMA TION

R

STARTER, MUFFLER, COVER • FIGURE 4

THT-2120

Recoil Starter Assy
Use #762.06500.90

Includes items #1 1-#19

ITEM PART NUMBE

4-3 7380650020 PROTECTOR,MUFFLER 1
4-4 73706500200 GASKET,MUFFLER 1
4-5 13306500200 SHIELD,HEAT 1
4-6 70606500800 MUFFLER 1
4-7 99201050011 WASHER,5 2
4-8 99051050503 BOLT,HEX,5X50 2
4-11 1120650080 CASE,FAN 1
4-12 78006097200 SPRING,RECOIL 1
4-13 77406097200 PULLEY,STARTER 1
4-14 80106091200 WASHE R,ROPE REEL 1 ~Q005150
4-15 8390201020 SCREW,SET 1
4-16 79806500900 PULLEY,STARTER,ASS'Y 1
4-17 2030604A202 GROMMET 1
4-18 78306097200 ROPE,STARTER 1
4-19 78506410200 HANDLE,STARTER 1
4-20 99415040162 SCREW,PS,4X16 3
4-21 75106500200 GASKET,MUFFLER 1
4-22 7210650090 PIPE,TAIL 1
4-24 99434040081 SCREW,4X8/S 2
4-47 2770634F900 CLUTCH,ASS'Y 1
4-61 99072045164 SCREW,TAPPING,4.5X16 1
4-62 99425040128 BOLT,PS,4X12 2
4-65 79006097200 SPRING,STA RTER PAWL 1
4-66 7880650020 PAWL,STARTER 1

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DESCRIPTION QTY COMMENTS

Page 5

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PARTS INFORMA TION

THT-2120

CARBURETOR • FIGURE 5

IT EM PART NUM BER DESCRI PTION QTY COM M ENTS

5-0 45525145900 C ARBURETOR ,ASS'Y 1 ~R233951
5-1 54825140200 SCREW,THROTTLE SET 2
5-5 53925120200 SWIVEL 1
5-7 48925100200 R ING,STOP 1
5-8 48825145800 VALVE,THROTTLE 1
5-10 55025100200 O-R ING 1
5-11 5992000W410 JET,MAIN,#41 1
5-13 ~ ~ ~ GASKET,PUMP 1 ~ Not available individually
5-14 ~ ~ ~ DIAPHRAGM, P UMP 1 Order #650.25140.900 Carb K it
5-15 52325100201 PLATE,PUMP 1
5-16 52225100200 PLATE,CIRCUIT 1
5-17 57825007200 SCREEN,INLET 1
5-18 57525140800 BODY,PUMP 1
5-19 ~ ~ ~ GASKET,DIAPHRAGM 1
5-20 ~ ~ ~ DIAPHRAGM,METERING 1
5-21 47625004200 C OVER,DIAPHRAGM 1
5-22 54825101200 SCREW,SET 4

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PARTS INFORMA TION

THT-2120

CARBURETOR • FIGURE 6

0

ITEM PART NUMBER DESCRIPTION QTY COMMENTS

6-0 455-06500-90 CARBURETOR, ASSY 1 R233952~U217438
6-0 455-0651A-90 CARBURETOR, ASSY 1 U217439~
6-1 54825140200 SCREW,THROTTLE SET 2
6-5 53925120200 SWIVEL 1
6-7 48925100200 RING,STOP 1
6-10 55025100200 O-RING 1
6-11 5992001W35 JET,MAIN,#35 1 ~U217438
6-11 599200BW34 JET,MAIN,LONG,#34.5 1 U217439~
6-13 ~ ~ ~ GASKET,PUMP 1 ~ Not available individually
6-14 ~ ~ ~ DIAPHRAGM,PUMP 1 Order #650.25140.900 Carb Kit
6-17 57825007200 SCREEN,INLET 1
6-18 5752518280 BODY,PUMP 1 ~U217438
6-18 5752514780 BODY,PUMP ASS'Y 1 U217439~
6-19 ~ ~ ~ GASKET,DIAPHRAGM 1
6-19 ~ ~ ~ GASKET,DIAPHRAGM 1
6-20 ~ ~ ~ DIAPHRAGM,METERING 1
6-21 47625004200 COVER,DIAPHRAGM 1
6-22 54825101200 SCREW,SET 4

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PARTS INFORMA TION

THT-2120

GEAR CASE, HANDLE • FIGURE 7

ITEM PART NUMBER DESCRIPTION QTY COMM ENTS

7-1 3003316081 CASE,GEAR 1
7-2 99350015002 RING,STOP,C-15 EX 1
7-3 99961600200 BEARING,BALL,#6002 1
7-4 99961600202 BEARING,BALL,#6002Z 1
7-5 2883318080 DRUM,CLUTCH 1
7-6 30533160200 SHAFT,GEAR 1
7-7 07533160200 PLATE,GUIDE 1
7-8 1013316022 ROD,CAM 2
7-9 3073318020 GEAR,2 1
7-10 30333160200 GASKET,GEARCASE 1
7-11 6303316020 COVER,GEAR CASE 1
7-12 1223316821 GUIDE,CUTTER 1 ~A302050
7-12 1223324820 GUIDE,CUTTER 1 A302051~
7-13 1363316020 PLATE,PROTECTION 1 T092851~
7-14 99052060165 BOLT,HEX,6X16 2
7-15 CB-22A BLADE,A,DS,26" 2
7-16 08533160200 SEAL,GREASE A 2
7-17 12933202201 WASHER,7 5
7-18 1243320221 BOLT,CUTT ER FIXING,A 5 ~A302050
7-18 1243228720 BOLT,FIXING,A 5 A302051~
7-19 1233317A20 NUT,CUTTER FIXING 5 ~A302050
7-19 40927 NUT,FLANGE,6 5 A302051~
7-21 99461040104 BOLT,HEX,4X10,S 8
7-22 30032250801 FITTING,GREASE 1
7-23 99051060143 BOLT,HEX,6X14 2
7-67 19805015800 CLAMP,CORD 1
7-69 1383316520 COVER,CUTTER,26" 1 ~T092850
7-69 1383317120 COVER,CUTTER,26" 1 T092851~
7-71 99210060012 WASHER,S,6 2
7-72 99440060011 NUT,SPRING 6 2
7-81 99201060011 WASHER,6 3 T092851~

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PARTS INFORMA TION

GEAR CASE, HANDLES • FIGURE 8

THT-2120

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PARTS INFORMA TION

R

GEAR CASE, HANDLES • FIGURE 8

THT-2120

ITEM PART NUMBE

8-25 05033160200 HANDLE,A 1
8-26 17033160800 SWITCH,STOP 1
8-27 2581165020 BUTTON,STOP 1
8-28 99011030101 SCREW,3X10 1
8-29 23033160200 LEVER,THROTTLE 1
8-30 23133160200 LEVER,SAFETY 1
8-31 23233160200 SPRING,THROTT LE LEVER 1
8-32 06432530200 PIN,PUSH 1 ~R233951
8-33 05133160200 HANDLE,B 1
8-34 06632300201 SPRING,STOPPER 1 ~R233951
8-35 72532600202 CAP,PUSH PIN 1 ~R233951
8-35 7653212020 CAP 1 R233952~
8-36 99072045164 SCREW,TAPPING,4.5X16 6
8-37 05833160200 BRACKET,HANDLE 1
8-38 99200060011 WASHER,SMALL,6 2
8-39 99161060012 NUT,WING,6 1
8-40 99021060551 BOLT,6X55 HEX 1 ~Q005150
8-40 99021060501 BOLT,6X50 1 Q005151~
8-41 26632750200 DAMPER,B 2
8-42 27632710201 COLLAR,DAMPER B 2
8-43 36832057200 WASHER,BRAKE SHAFT 2
8-45 99414050301 SCREW,5X30/S 2
8-46 29433160200 COLLAR 1 ~Q005150
8-46 2943316021 COLLAR 16 1 Q005151~
8-47 88506500800 WIRE,THROTTLE 1
8-48 92533160200 DECAL,STOP B UTTON 1
8-50 2493316020 BODY,CLAMP A 1
8-51 27632710201 COLLAR,DAMPER B 2
8-52 26632750200 DAMPER,B 2
8-53 36832057200 WASHER,BRAKE SHAFT 2
8-55 99414050301 SCREW,5X30/S 2
8-56 99073045124 SCREW,TAPPING,4.5X12 2
8-57 2503316020 BODY,CLAMP,B 1
8-58 99073045124 SCREW,TAPPING,4.5X12 3
8-61 2103316021 HANDLE 1
8-62 0403316080 SUPPORT,HANDLE 1
8-63 99201050011 WASHER,5 2
8-65 99414050401 SCREW,5X40/S 2
8-73 16407007000 TUBE,PROTECTION,7X700 1

DESCRIPTION QTY COMMENTS

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PARTS INFORMA TION

R

THT-2120

DECALS, TOOLS • FIGURE 9

ITEM PART NUMBE

9-1 95037900200 DECAL,PRO-FORCE A 1
9-2 9060650021 DECAL,THT-2120 1
9-5 95137900200 DECAL,PRO-FORCE 1
9-8 91106500200 DECAL,SRS 1
9-10 9200650A20 DECAL,WARNING 1 ~R003554
9-17 9203246620 DECAL,CAUTION 1 R003555~
9-27 9083316021 DECAL,CAUTION 1
9-28 91933160200 DECAL 1
9-75 03629331501 SPANNER,COMBI 1
9-76 81320000200 WRENCH,HEX,4 1

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DESCRIPTION QTY COMMENTS

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TECHNICAL SERVICE BULLETIN NUMBER PI 3118

June 2001

Date:

Model & Serial:

All units produced after serial number W100101.

Reason:

When these units are fitted with the aluminum safety shield, some experience

Models THT-2100, 2120, 2510 and HTD-2526PF, 2522PF require 3 washers.
Models THT-2520, 2540 and HTS-2530PF and HTD-2530PF require 2 washers

Part Number Changes:
Old Part # New Part # Description Remarks

992-01060-011 Washer

THT-2100/THT-2120/THT-2510/THT-2520/THT-2540/HTD-2522PF/HTD-2526PF/HTD-

2530PF/HTS-2530PF.

loosening of the blade jam nuts. A flat washer has been added between the nut
and the aluminum shield to help prevent the nut from becoming loose.

Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4

th

Street SW, Bldg B • Auburn, WA 98001 • Phone: [phone] • Fax: [phone]

TECHNICAL SERVICE BULLETIN NUMBER PI 3119

January, 2002

Date:

Model & Serial:

All units after

Reason:

All future production of hedgetrimmer models will utilize a blade-retaining nut

When adjusting blade-fastening hardware, thread the bolt (18) through the

Part Number Changes:
Old Part # New Part # Description Remarks

123-33202-200 123-3317A-20 Lock Nut Reference #19

All THT, HTD, HTS, TPH hedgetrimmer models.

serial number Y004401

that is of the locking variety. These nuts are oblong on one side to prevent
loosening during use, but can be removed and re-installed without losing their
locking ability.

blades and guide bar from the bottom, to a point where the flat washer (17), is
still able to rotate, (usually to seat, and then backed off between ¼ and ½
revolution). Then install the lock nuts on the topside, tightening them while
holding the bolt in place. Tighten all nuts, and then re-check for adjustment prior
to operation. A lubricating agent, such as WD-40 should also be used to prevent
sap build-up and premature wear.

Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4

th

Street SW, Bldg B • Auburn, WA 98001 • Phone: [phone] • Fax: [phone]

TECHNICAL SERVICE BULLETIN NUMBER PI 3125

December 2004

Date:

Model & Serial:
All Units
Reason: We have received field reports of hedge trimmer cutter guide bar breaking under

Part Number Changes: THT / HTD

THT-2120 / HTD-2526PF / HTD-2522PF

certain conditions and have developed a solution to reduce the likelihood of this
reoccurring.

Reference New parts # Description

462-33191-90 Support plate assy
# 20 994-61040-124 * Hex hole bolt 4x12S (6 pcs)
# 60 301-33191-21 * Gear case B
# 77 462-33191-20 * Support plate
# 78 994-61040-104 * Hex hole bolt 4x10S (4 pcs)
# 81 871-32600-200 * Special washer B

Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4

th

Street SW, Bldg B • Auburn, WA 98001 • Phone: [phone] • Fax: [phone]

TECHNICAL SERVICE BULLETIN NUMBER PI 3130

Date: December 2004
Model & Serial:

HTD-2522PF/2526PF/2530PF, HTS-2530PF/2540PF – A302051 and later.
THT-2120/2520/2540 – A302051 and later.

Reason:

Configuration standardization of hardware, converting blade hardware from US

Comments:

Part Number Changes:

Cutter guide 625.5L M6 122-32287-21 122-32286-21

Cutter guide 625.5L M6 122-33160-21 122-33178-20

Protection plate 390L 136-33160-20

Cutter guide 734L M6 122-33168-21 122-33248-20

Protection plate 390L 136-33160-20

Cutter guide 830L M6 122-33187-20 122-33285-20

Protection plate 585L 136-33181-20

Cutter guide 845.5L M6 122-33190-21 122-33191-20

protection plate 380L 136-33190-20

Cutter guide 1105L M6 122-33185-20

Protection plate 585L 136-33181-20

Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4

TPH-210/2501/250PF270PF – A290201 and later.

Standard thread to Metric thread.

Please verify serial number on unit prior to ordering replacement blade hardware and

add the support plate on older serial numbers.

Description Old parts # New parts #

Cutter fixing bolt A 124-33202-21 124-32287-20 4 to 1 pc
Cutter fixing bolt B 125-32287-20 3 pcs

Flange nut M6 123-3317A-20 991-82060-001 4 pcs

For HTD-2522PF

Cutter fixing bolt A 124-33202-21 124-32287-20

Flange nut M6 123-3317A-20 991-82060-001

Washer 6 992-01060-011 3 pcs

Cutter fixing bolt A 124-33202-21 124-32287-20

Flange nut M6 123-3317A-20 991-82060-001

Washer 6 992-01060-011 3 pcs

Cutter fixing bolt A 124-33202-21 124-32287-20

Flange nut M6 123-3317A-20 991-82060-001

Washer 6 992-01060-011 3 to 1 pc

Cutter fixing bolt A 124-33202-21 124-32287-20

Flange nut M6 123-3317A-20 991-82060-001

Washer 6 992-01060-011 2 pcs

Cutter fixing bolt A 124-33202-21 124-32287-20

Flange nut M6 123-3317A-20 991-82060-001

Washer 6 992-01060-011 3 to 1 pc

For TPH-210/2501/250PF/270PF

For THT-2120/HTD-2526PF

For HTS-2530PF

For THT-2520/HTD-2530PF

For THT-2540/HTS-2540PF

th

Street SW, Bldg B • Auburn, WA 98001 • Phone: [phone] • Fax: [phone]

Comments