Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4th Street SW, Bldg B • Auburn, WA 98001 • Phone: (253) 333-1200 • Fax: (253) 333-1212Date: December 2004Model & Serial: TPH-210/2501/250PF270PF – A290201 and later.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 USStandard thread to Metric thread.Comments: Please verify serial number on unit prior to ordering replacement blade hardware andadd the support plate on older serial numbers.Part Number Changes:Description Old parts # New parts # CommentsFor TPH-210/2501/250PF/270PFCutter guide 625.5L M6 122-32287-21 122-32286-21Cutter fixing bolt A 124-33202-21 124-32287-20 4 to 1 pcCutter fixing bolt B 125-32287-20 3 pcsFlange nut M6 123-3317A-20 991-82060-001 4 pcsFor HTD-2522PFCutter guide 625.5L M6 122-33160-21 122-33178-20Cutter fixing bolt A 124-33202-21 124-32287-20Flange nut M6 123-3317A-20 991-82060-001Protection plate 390L 136-33160-20Washer 6 992-01060-011 3 pcsFor THT-2120/HTD-2526PFCutter guide 734L M6 122-33168-21 122-33248-20Cutter fixing bolt A 124-33202-21 124-32287-20Flange nut M6 123-3317A-20 991-82060-001Protection plate 390L 136-33160-20Washer 6 992-01060-011 3 pcsFor HTS-2530PFCutter guide 830L M6 122-33187-20 122-33285-20Cutter fixing bolt A 124-33202-21 124-32287-20Flange nut M6 123-3317A-20 991-82060-001Protection plate 585L 136-33181-20Washer 6 992-01060-011 3 to 1 pcFor THT-2520/HTD-2530PFCutter guide 845.5L M6 122-33190-21 122-33191-20Cutter fixing bolt A 124-33202-21 124-32287-20Flange nut M6 123-3317A-20 991-82060-001protection plate 380L 136-33190-20Washer 6 992-01060-011 2 pcsFor THT-2540/HTS-2540PFCutter guide 1105L M6 122-33185-20Cutter fixing bolt A 124-33202-21 124-32287-20Flange nut M6 123-3317A-20 991-82060-001Protection plate 585L 136-33181-20Washer 6 992-01060-011 3 to 1 pcTECHNICAL SERVICE BULLETIN NUMBER PI 3130