ENGINE, MUFFLER, AIR CLEANER, FUEL SYSTEM • FIGURE 2
ITEMPART NUMBERDESCRI PTIONQTYCOMMENTS
2-502230650090PIPE,FUEL,ASS'Y1
2-5168000731201CLIP 6.31
2-526750404280FILTER,FUEL1
2-535910650000TANK.FUEL1Before S/N T245720
2-535910661321TANK.FUELS/N T245721 to U244200
2-535910651A21TANK,FUEL1S/N U244201 and after
2-545950650A90TANK CAP1Before S/N T245720
2-545950656B90CAP,FUEL BLA CK,NON VENT1S/N T245271 and after
2-5565900801200COLLAR2
2-5899463050185BOLT,HEX 5X18PS2
2-6199072045164SCREW,TAPPING,4.5X161
2-6299425040128BOLT,PS,4X122
2-6579006097200SPRING,STARTER PAW L1
2-667880650020PAWL,STARTER1
2-7044225143800PUMP,PRIMING A SS'Y1S/N U244201 and after
2-7770002504080PIPE,FUEL,2.5X4X801S/N U244201 and after
2-787000250406PIPE,FUEL,2.5X4X651S/N U244201 and after
2-7953432710200GROMMET,FUEL PIPE1S/N U244201 and after
2-121 56400661190VENT,AIR ASS'Y1
2-122 5650441020PIPE,AIR VENT1
2-123 5640098190AIR VENT VALVE ASSY1
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Page 7
PARTS INFORMATION
THT-2100
CARBURETOR • FIGURE 3
A small retainer (560-02170-
20), has been added to this
model after serial # A099801
to prevent the barrel end of the
throttle wire from coming
detached from the carburetor.
ITEMPART NUMBERDESCRIPTIONQTYCOMMENTS
3-04550650090CARBURETOR,SET1Before S/N U244200
3-04550651A90CARBURETOR1S/N U244201 and after
3-154825140200SCREW,THROTTLE SET1
3-553925120200SWIVEL1* Contained in Carb Repair Kit
3-748925100200RING,STOP1 P/N 650-25124-900 (Not available individually)
3-1055025100200O-RING1
3-115992000W35JET, MAIN,#351Before S/N U244200
3-11599200BW34JET,MAIN,LONG,#34.51S/N U244201 and after
3-13~ ~ ~*GASKET,PUMP1
3-14~ ~ ~*DIAPHRAGM, PUMP1
3-17~ ~ ~*SCREEN,INLET1
3-185752518280BODY,PUMP1Before S/N U244200
3-185752514780BODY,PUMP AS S'Y1S/N U244201 and after
3-19~ ~ ~*GASKET,DIAPHRAGM1Before S/N U244200
3-19~ ~ ~*GASKET,DIAPHRAGM1S/N U244201 and after
3-20~ ~ ~*DIAPHRAGM,METERING1
3-2147625004200COVER,DIAPHRAGM1
3-2254825101200SCREW,SET4
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: (253) 333-1200 • Fax: (253) 333-1212
Page 13
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: (253) 333-1200 • Fax: (253) 333-1212
Page 14
TECHNICAL SERVICE BULLETIN NUMBER PI 3129
December 2004
Date:
Model & Serial:
A302051 and later
Reason: Configuration standardization of hardware, converting blade hardware from US
Comments:
Part Number Changes:
THT-2100
Standard thread to Metric thread. An additional support plate is also being added
to this product to strengthen the cutter guide.
Please verify serial number on unit prior to ordering replacement blade hardware
and add the support plate on older serial numbers. The support plate qualifies
for warranty reimbursement at .25 hours and normal parts rate.