Tanaka THT-2520 User Manual

Model Number:

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THT-2520

HEDGETRIMMER

P/N 27955
Rev 002
Date 11-13-07

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

www.tanakapowerequipment.com [e-mail]

PARTS INFORMA TION

ENGINE / CYLINDER, PISTON, CRANKCASE, IGNITION • FIGURE 1

THT-2520

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PARTS INFORMA TION

THT-2520

ENGINE / CYLINDER, PISTON, CRANKCASE, IGNITION • FIGURE 1

ITEM PART NUMBER DESCRIPTION QTY COMMENTS

1-1 1570650091 CAP,SPARK PLUG ASS'Y 1
1-2 0181166021 PLUG,SPARK 1
1-3 0010660090 SET,CYLINDER 1 Includes cylinder gasket
1-4 99416050201 SCREW,5X20/WS 2
1-7 0170650020 GASKET, CYLINDER 1
1-8 04101601200 RING,PISTON 2
1-9 0300660090 SET,PISTON 1 Includes rings, and circlips
1-10 03701601200 PIN,PISTON 1
1-11 03901620200 CIRCLIP,PISTON PIN 2
1-12 04606500801 CRANKSHAFT 1
1-13 99962081225 BEARING,NEEDLE,F-810 1
1-21 0720650090 CRANKCASE ASS'Y 1 Crankcase assy includes bearings, seals
1-22 09006500200 GASKET,CRANKCASE 1 and gasket.
1-23 99966122206 SEAL,OIL,TC12227 2
1-24 99961600100 BEARING,BALL,#6001 2
1-25 33000200210 SHIM,12.2X19X.10 V Shims are "as needed" to obtain
1-25 33000200220 SHIM,12.2X19X.15 V correct side clearance
1-25 33000200230 SHIM,12.2X19X.20 V
1-25 33000200240 SHIM,12.2X19X.30 V
1-26 59900601200 CUSHION 1
1-27 1672153280 COIL,IGNITION 1
1-28 99416040226 SCREW,WS,4X22 2
1-30 99414050301 SCREW,5X30/S 3
1-31 1552152380 ROTOR, MAGNETO 1
1-32 99201080011 WASHER,8 1
1-33 99210080012 WASHER,S,8 1
1-34 99101080011 NUT,8 1
1-35 10002100200 BOLT,STUD,6X22 2
1-36 25006500200 TUBE,INSULATOR 1
1-37 1780650080 CORD,STOP COMPLETE 1

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PARTS INFORMA TION

CARBURETOR, FUEL TANK, FUEL SYSTEM • FIGURE 2

THT-2520

CARBURETOR

SEE FIG-3

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PARTS INFORMA TION

THT-2520

CARBURETOR, FUEL TANK, FUEL SYSTEM • FIGURE 2

IT EM P ART NUM BER DESCRIPTI ON QTY COMM ENT S

2-3 7380660020 PROTECTOR,MUFFLER 1
2-4 73706500200 GASKET,MUFFLER 1
2-5 13306500200 SHIELD,HEAT 1
2-6 7040650090 SET,MUFFLER 1
2-7 99201050011 WASHER,5 2
2-8 99051050503 BOLT,HEX,5X5 0 2
2-11 11206 50080 CASE,FAN 1
2-12 78006 097200 SPRING,RECOI L 1
2-13 77406 097200 PULLEY,STARTER 1
2-15 83902 01020 SCREW,SET 1
2-16 79806 500900 PULLEY,STARTER,ASS'Y 1
2-17 20306 04A202 GROMMET 1
2-18 78306 097200 ROPE,START ER 1
2-19 78506 410200 HANDLE,ST ARTER 1
2-20 99415 040162 SCREW,PS,4X16 3
2-21 75106 500200 GASKET,MUFFLER 1
2-22 7210661190 SET,TAIL PIPE 1
2-24 99434 040081 SCREW,4X8/S 2
2-25 40306 500200 GASKET,INTAKE 1
2-26 4040650090 SET,CARB INSULATOR 1
2-27 99416 050252 SCREW,5X25WS 2
2-30 40206 500200 GASKET,CARBURETOR 1
2-33 99967 015000 O-RIN G,P15 1
2-35 42306 50081 BODY,CL EANER 1
2-36 47006 500200 COLLAR 2
2-37 5280650T20 LEVER,CHOKE 1
2-38 99204 080030 WASHER,8 1
2-39 47601700200 BOA RD,BLOW OVE R CHECK 1
2-40 99210 050012 WASHER,S,5 2
2-41 99011 050602 SCREW,5X60 2
2-43 44606 50020 ELEMENT ,CLEANER 1
2-44 4520660091 COVER W, B OLT 1
2-45 3800637C200 B OLT,CLEANER COVE R 1
2-46 4550650090 CARBURETOR,SET 1 Before S /N U217738
2-46 4550651A90 CARBURETOR 1 S/N U217739 and after
2-47 2770634F900 CLUTCH,ASS'Y 1

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PARTS INFORMA TION

THT-2520

CARBURETOR, FUEL TANK, FUEL SYSTEM • FIGURE 2

IT EM P ART NUM BER DESCRIPTI ON QTY COMM ENT S

2-50 22306 50090 PIPE,FUEL,ASS'Y 1
2-51 68000731201 CLIP 6.3 1
2-52 67504 04280 FILTER,FUEL 1
2-53 5910650000 TA NK ,FUEL PIPE ,ASS'Y 1 Before S/N T218760
2-53 5910661321 TA NK ,FUEL 1 From S /N T218761 to U217738
2-53 5910651A21 TANK,FUEL 1 S/N U217739 and after
2-54 5950650A90 TANK CAP 1 Before S/N T218760
2-54 5950656B90 CAP,FUEL BLACK ,NON VENT 1 S/N T218761 and after
2-55 65900 801200 COLLAR 2
2-58 99463050185 BOLT,HEX 5X18P S 2
2-61 99072 045164 SCREW,TAPPING,4.5X16 1
2-62 99425 040128 BOLT,PS,4X12 2
2-65 79006097200 SP RING,STARTER PAWL 1
2-66 78806 50020 PAWL,STARTER 1
2-70 44225143800 PUMP , P RIMING A S S'Y 1 S/ N U217739 and after
2-77 70002504080 PIPE,FUEL, 2.5X4X80 1 S/N U217739 and after
2-78 7000250406 PIPE,FUEL,2. 5X4X65 1 S/N U217739 and after
2-79 53432710200 GROMME T,FUEL PIPE 1 S/N U217739 and after
2-121 564066119 0 VENT,AIR ASS'Y 1
2-122 5650441020 PIPE ,AIR VENT 1
2-123 6460098190 AIR VENT VALV E ASSY 1

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PARTS INFORMA TION

THT-2520

CARBURETOR • FIGURE 3

IT EM P ART NUM BER DESCRIPTI ON QTY COMM ENT S

3-0 4550650090 CARB URETOR,SET 1 Before S/N U217738 3-0 4550651A 90 CARB URETOR 1 S/N U217739 and after 3-1 54825140200 SCREW , THROTTLE S ET 2 3-5 53925120200 SWIVEL 1 * Contained i n Carb Repair Kit 3-7 48925100200 RING, STOP 1 P/N 650-25124-900 (Not available individuall y ) 3-8 48825145800 VALVE,THROTTLE 1 3-10 55025 100200 O-RIN G 1 3-11 5992000W35 JET,MAIN,#35 1 Before S/N U217738 3-11 5992000W410 JET,MAIN,#41 1 S / N U217739 and after 3-13 ~~ *GASKET,PUMP 1 3-14 ~~ *DIAPHRAGM,PUMP 1 3-17 ~~ *SCREEN,INLET 1 3-18 5752518280 BODY, PUMP 1 B efore S/N U217738 3-18 5752514780 BODY, P UMP A S S'Y 1 S /N U217739 and after 3-19 ~~ *GASKET,DIAPHRAGM 1 Before S/N U217738 3-19 ~~ *GASKET,DIAPHRAGM 1 S/N U217739 and aft er 3-20 ~~ *DIAPHRAGM,METERING 1 3-21 47625 004200 COVER,DI APHRAGM 1 3-22 54825 101200 SCREW,SET 4

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PARTS INFORMA TION

GEAR CASE, HANDLE, CUTTER BLADES • FIGURE 4

THT-2520

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PARTS INFORMA TION

THT-2520

GEAR CASE, HANDLE, CUTTER BLADES • FIGURE 4

ITEM PART NUMBER DESCRIPTION QTY COMMENTS

4-1 3003316081 CASE,GEAR 1
4-2 99350015002 RING,STOP,C-15 EX 1
4-3 99961600200 BEARING,BALL,#6002 1
4-4 99961600202 BEARING,BALL,#6002Z 1
4-5 2883318080 DRUM,CLUTCH 1
4-6 30533160200 SHAFT,GEAR 1
4-7 07533160200 PLATE,GUIDE 1
4-8 1013319020 ROD,CAM 2
4-9 3073318020 GEAR,2 1
4-10 30333160200 GASKET,GEARCASE 1
4-11 6303316020 COVER,GEAR CASE 1
4-12 1223319021 GUIDE,CUTTER 1 ~A302050
4-12 1223319120 GUIDE,CUTTER 1 A302051~
4-13 1363319020 PLATE,PROTECTION 1
4-14 99052060165 BOLT,HEX,6X16 2
4-15 1203319021 BLADE,CUTTER 2
4-16 08533160200 SEAL,GREASE A 2
4-17 12933202201 WASHER,7 6
4-18 1243320221 BOLT,CUTT ER FIXING,A 6 ~A302050
4-18 1243228720 BOLT,FIXING,A 6 A302051~
4-19 1233317A20 NUT,CUTTER FIXING 6

19 40927 NUT,FLANGE,M6 6 A302051~

4­4-20 99461040155 BOLT, HEX, 4X15 2
4-21 99461040124 BOLT,HEX 4X12 6
4-22 30032250801 FITTING,GREASE 1
4-23 99051060143 BOLT,HEX,6X14 2
4-25 05033160200 HANDLE,A 1
4-26 17033160800 SWITCH,STOP 1
4-27 2581165020 BUTTON,STOP 1
4-28 99011030101 SCREW,3X10 1
4-29 23033160200 LEVER,THROTTLE 1
4-30 23133160200 LEVER,SAFETY 1
4-31 23233160200 SPRING,THROTT LE LEVER 1
4-33 05133160200 HANDLE,B 1
4-35 7653212020 CAP 1
4-36 99072045164 SCREW,TAPPING,4.5X16 6
4-37 05833160200 BRACKET,HANDLE 1
4-38 99200060011 WASHER,SMALL,6 2
4-39 99101060011 NUT,6 1
4-40 99021060501 BOLT,6X50 1
4-41 26632750200 DAMPER,B 2
4-42 27632710201 COLLAR,DAMPER B 2
4-43 36832057200 WASHER,BRAKE S HAFT 2
4-45 99414050301 SCREW,5X30/S 2
4-46 2943316021 COLLAR 16 1
4-47 88506500800 WIRE,THROTTLE 1
4-48 92533160200 DECAL,STOP BUTTON 1

A302050

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PARTS INFORMA TION

THT-2520

GEAR CASE, HANDLE, CUTTER BLADES • FIGURE 4

ITEM PART NUMBER DESCRIPTION QTY CO MMENT S

4-50 2493316020 BODY,CLAMP A 1
4-51 27632710201 COLLAR,DA M PER B 2
4-52 26632750200 DAMPER,B 2
4-53 36832057200 WASHER,BRAKE SHAFT 2
4-55 99414050301 SCREW,5X 30/S 2
4-56 99073045124 SCREW,TAPPING,4.5X12 4
4-57 2503316020 BODY,CLAMP,B 1
4-58 99073045124 SCREW,TAPPING,4.5X12 1
4-59 2963319020 SPACER 1
4-60 3013316020 CASE,GEAR,B 1 Before S/N V026060
4-60 3013319120 CASE,GEAR,B 2 S/N V026461 and after
4-61 2103316021 HANDLE 1
4-62 0403316080 SUPPORT,HANDLE 1
4-63 99201050011 WASHER,5 2
4-65 99414050401 SCREW,5X 40/S 2
4-67 19805015800 CLAMP,CORD 1
4-69 1383319020 COVER, CUTTE R, 30" 1 Before S/N V026060
4-69 1383319320 COVER, CUTTE R, 30" 1 S/N V026061 and after
4-71 99210060012 WASHER,S,6 2
4-72 99440060011 NUT,SPRING 6 2
4-73 16407007000 TU BE,PROTECTION 1
4-75 81320000200 WRENCH,HEX,4 1
4-76 03629331501 SPANNER,COMBI 1
4-81 99201060011 WASHER,6 3
4-82 1353319120 PROTECTOR, BLADE 1 S/N V230528 and after
4-83 99461040104 BOLT,HEX, 4X10 2 S/N V 026061 and after
4-84 4623319120 BRACKET,SUPP ORT 1 S/N V026061 and after

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PARTS INFORMA TION

THT-2520

DECALS • FIGURE 5

ITEM PART NUMBER DESCRIP TION QTY COM MENTS

6-1 95037900200 DECAL,PRO-FORCE A 1
6-2 9060660120 NAME PLA TE, THT 2520 1
6-5 9513790 0200 DECAL,PRO-FORCE 1
6-8 9110650 0200 DECAL,SRS 1
6-17 9203246620 DECAL,CAUTION 1
6-28 91933160200 DECAL 1

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TECHNICAL SERVICE BULLETIN NUMBER PI 3107

June, 2000

Date:

Model & Serial:
All units after serial number V026461.

Reason:

A guide support bracket that extends from the lower gear case casting to the

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

462-33191-20 Support Bracket #29
994-61040-104 Hex Bolt, 4x10 #30
992-01060-011 Washer 6 From 3 to 2 pieces

THT-2520

blade guide has been added to eliminate breakage of the blade guide. The gear
case has been changed to accommodate the mounting of the bracket.

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 3114

Date: December 2000

Model & Serial:
All units after serial number V230528

Reason:

A protective guide tip has been added to allow the tip of the blades to move

A different scabbard that accommodates the wider tip has also been added.

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

135-33191-20 Tip Protector #82

138-33193-20 138-33190-20 Blade Scabbard

THT-2520

more easily through foliage and to protect the blades and guide bar from
incidental contact.

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 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 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