HIRTH ENGINE SETTING VALUES. 55 HP Engine Fan cooled engine

Transcription

1 HIRTH ENGINE SETTING VALUES 55 HP Engine Fan cooled engine Engine 55HP FC Ign Carbureted 14 BTC Spark Plug Heat VI * 280 Spark Plug Gap No. of Carburetors Two Carburetor ID # Bing 54 Carburetor (38mm) Main Jet 160 Idle Jet 45 Jet Needle 6P2 Position 1 Needle Jet 2.72 Needle Position 1 Do not exceed RPM 5800 Peak HP RPM 5500 HP (4i Peak RPM 55 Peak Torque RPM 5000 Peak Torque Ft. Lb Maximum CHT 535 F Maximum full power 1256 F Maximum cruise RPM 1330 F Spark Plug * Compression Pressure 120 PSI Useful Links: * Optional Plugs : NGK BR 8 HS : Champion RL86C or #830, L78C : Nippon Denso W24 FSR-u : Bosch W3AC Official Bing Manual: Online Rebuild Manual: Online Tuning Manual: Online Cleaning Guide: Assy Form 16941

2 Single ignition wiring diagram Form 17119

3 Spare part list - 55 HP Single Ignition Crankcase 2703 Figure Qty. Designation Part No. Neoteric Part No Remark 1 1 Crankcase, complete 270 ABIU Incl. Pos Alignment pin DIN x Stud screw DIN 835 M8x85 Loctite Sealing ring DIN A6.5x9.5x2A1 5 1 Hose nipple 270 K Rubber cap l Hexagon head screw DIN 933 M6x Cylinder screw DIN 912 M8x50 Md = 23 Nm. Loctite Set of gaskets 27/ Part 17116

4 Crankshaft 2703 Description Fig. Qty. No. 1 1 Crankshaft, complete 2 1 Deep groove ball bearing 3 1 Deep groove ball bearing 4 1 Deep groove ball bearing 5 2 Circlip 6 2 Shaft sealing ring 7 1 Space ring 8 Remark / Notes Neoteric Part # 7911 Includes items Needle Bearing, Blue dot (#1) 7909 * Connecting Rods are Color-Coded with a Paint Dot on the Piston end. Needle Bearing, Yellow dot (#2) 6082 Needle Bearing, Red dot (#3) 6083 Engines built from 2010 onward also include a Number Code next to the Paint Dot. The coding corresponds to the correct Needle bearing size. (Approx " [0.008mm] graduation between each size) 5464 Blue (#1) is the smallest and Green (#5) is the largest. Connecting rods with a Red (#3) dot are most common. 2 Needle Bearing, White dot (#4) Needle Bearing, Green dot (#5) 7910 If the paint dot is missing and no number code can be found, all bearings must be tried for the best fit. Part rev2

5 Exhaust system Fig. No. Quantity Designation Part No. Neoteric Part No Remark 1 2 Exhaust gasket 268 A Cylinder screw DIN 912 M8x Md = Nm 3 1 Exhaust manifold 278 A1U 5548 Prepared for temperature meas. 4 4 Exhaust Spring M8x1x10 SHCS 6934 Removed from EGT Holes (not in sketch) Form 17120

6 Fan cooling system 2703 Flat Belt Cooling Fan (Old Style) Flat Belt (Old Style) Poly V Belt Cooling Fan (Current) Poly V Belt (Current) Form rev3

7 Fan cooling system 2703 Fig. No. 1 1 Fan housing, complete 273 BC1U 2 3 Alignment sleeve DIN x10 Qty. Designation Ref. No. Neoteric Part No Note Includes Fig No. 4, 5, 7, 8, 9, 10, 11, Cylinder screw DIN 912 M6x Md = 9, Nm 4 1 Hexagon head nut DIN 985 M12x1,5 5 1 Washer DIN 125 B13-St * 1 Flat belt 043.4/ Poly Flex belt Locking ring * Deep groove ball bearing Fan wheel Assy, Flat belt Fan wheel Assy, Poly V DIN 472, J32 x 1,2 DIN RZ/C3 273 AB1U 11 1 Bushing 263 A Md = Nm C1U Eccentric shaft 263 A Thread screw 050.8/ Washer DIN 9021 B6, Thread screw 050.8/ l6 1 Air guide cowl 273 J3U Metal plate 323 A Hexagon head nut DIN 985 M Washer DIN 125 B4, Screw DIN963 M4x Washer DIN 988 S 13x19x (5879 modified) *Used up to model year 2008 (Engine # & Lower) Currently used, from 2008 onward (Engine # & Higher) Incl. Pos. 8, 9, 10, 11 *Used up to model year 2008 (Engine # & Lower) Incl. Pos. 8, 9, 10, 11 Currently used, from 2008 onward (Engine # & Higher) Form rev2

8 Start device 2703 Fig. No. Quantity Designation Part No. Neoteric Part No Remark 1 3 Cylinder screw DIN 912 M6x Md = 9, Nm 2 3 Spring ring DIN Starter, mounted 265 A1U Cylinder screw DIN 6912 M8x35 Md = Nm 5 3 Tab washer 053.8/ * 1 Driving dog with starter, Flat 6203 *Used up to model year 2008 (Engine # & Lower) 6 1 Driving dog with starter, Poly-V 275 AB3U 6389 Currently used, from 2008 onward (Engine # & Higher) 7 2 Cylinder screw DIN 912 M8x Md = Nm - 2 Cylinder screw 275 L1 With starter mounted 8 2 Tab washer 058.8/ E-starter Solenoid starter Starter-relay Form rev2

9 Fuel mixture (2-carburetor-version) 2703 Fig. No. Quantity Designation Part No. Neoteric Part No Remark 1 2 Gasket 277 A7 2 2 Intake manifold 277 G Serrated lock washer 053.8/ Cylinder screw DIN 912 M6x Md=9,6-11 Nm 5 4 Gasket 277 D a 1 Heat shield plate, right 277 P11 6b 1 Heat shield plate, left 277 P Rubber flange 078.1/ Tab washer DIN 137 B8,4 9 4 Cylinder screw DIN 912 M8x25 Md=23-28 Nm 10 2 BING carburetor 54/38/ Main Jet:160, Idle Jet:45, Needle Jet: 2.72 Jet Needle 6P2 Pos:1, Air screw: 0, Air filter Form 17685

10 Hirth HT4 Air Box Assembly Cutouts on FI Air Boxes Only; Carbureted Air Boxes have no Cutouts Fig. No. Qty Designation Neoteric Part # Remark 1 2 Rivet Fiberglass Air Box, Carbureted Fiberglass Air Box, FI Air Filter 6622 Includes item Hose Clamp Large Washer Small Washer Air Box Assembly, Carbureted 5583 Includes item 1-6 as shown above - - Air Box Assembly, FI 7765 Includes item 1-6 as shown above Form rev2

11 Carburetor 2703 Form 17686

12 Carburetor 2703 Fig. No. Quantity Designation Part No. Neoteric Part No Remark Dual Carb Jets 1 1 Main jet /4/ Bold printed numbers are showing special sizes of jets 2 1 Needle jet /22/ and 3 1 Jet needle /11/6P2 I 6976 needles! 4 1 Idle jet /3/45 Note: 2 carb version Jets. 5 1 Adjusting screw for /4 idle 6 1 O-Ring /5 7 1 Throttle slide /10/ Mixture tube /2 9 1 Filter bushing / Bracket plate / Spring plate / Adjusting screw / Spring / Spring / Cover plate / O-Ring / Screw 073.3/ Adjusting screw 073.6/ Kit Must purchase 7828 kit Nut 073.2/ Kit Must purchase 7828 kit Socket / Kit Must purchase 7828 kit Float / Pin / Float pin / Clamping spring / Float chamber / Gasket / Spring clamp / Starting piston / Kit Must purchase 7828 kit Sleeve / Kit Must purchase 7828 kit Spring / Kit Must purchase 7828 kit Starter housing / Kit Must purchase 7828 kit Hose / Rubber cap for /31 primer connection 34 1 Float chamber / O-ring /33 Assy Form 17687rev2

13 Ignition lighting system single ignition 2703 Fig. No. Qty. Designation Part No. Neoteric Part No Remark 1 1 Hexagon head nut DIN 985 M16x1, Md= Nm 2 1 Washer 161 A6 3 1 Flywheel with gear ring /2 4 2 Cylinder screw DIN 912 M5x Washer 212 A Washer DIN 125 B5, Md=4-4,5 Nm 7 1 Stator plate complete / Flywheel alignment pin DIN 7 4m6x6 9 1 CDI - Box / Mounted with silicone 10 2 Coil Mounting Screw M6XP1X12 SHC SS 2469 Included in item Ignition coil /3/ Ignition cable, complete 274 BA10U Spark plug Denso W24 FSR - U VAPE R82 DC Regulator 14V 33 Magnet Support / Spark plug lead, short Spark plug lead, long Spark Plug lead set 5661 Includes plug boots Assy Form 17683

14 Single Cylinder ignition 2703 Fig. No. Quantity Designation Part No. Neoteric Part No Remark 1 2 Cylinder 272 U Cylinder base gasket 272 A Cylinder head F 302 Al 6181 Single Ignition 5 16 Cylinder screw DIN 912 M6x Md = 11 Nm 6 16 Washer 212 A Washer 190 A Hexagon head nut DIN 934 M8 Md = Nm 9 2 Piston set Incl. Pos. 11, 12, 13, Piston / Piston pin / Piston ring / Retaining ring / Part 5860

15 Miscellaneous 2703 Fig. No Quantity Designation Part No. Neoteric Part No Remark 1 Gasket Set DI27/ Includes: 2 Sealing Ring / Cylinder base 272 A gasket 2 Outlet gasket 268 A Intake gasket 277 A2 2 Gasket 277 D Sealing ring DIN 7603 A6, 5x9, x2 Al

16 HIRTH ELECTRICAL COMPONENT RESISTANCE VALUES Volt Meter Terminal 1 Volt Meter Terminal 2 (Red Lead) (Black Lead) Value Unit Part Notes Yellow Wire Yellow Wire Ohm /65Hp Stator Coil Yellow Wire Mount Plate Ohm (Magneto) Primary 1 Primary Ohm Primary Secondary Ohm Secondary 1 Secondary Ohm /65Hp Ignition Coil See Figure "A" Black & Green Wire Black & White Wire Ohm Yellow & Brown Wire Black & White Wire Ohm Black & Blue Wire Black & White Wire Ohm Ground Black & White Wire Ohm Secondary 1 Ground Ohm Secondary 2 Ground Ohm Secondary 3 Ground Ohm Yellow Wire Yellow Wire Ohm Hp Ignition Coil Hp Stator Coil (Magneto) See Figure "B" Black Red Volts (DC) Red Black > Volts (DC) Yellow Yellow Volts (DC) Hirth Voltage Regulator * Must have a multi-meter with a diode test to diagnose voltage regulator

17 HIRTH 55 HP ENGINE FAN CURVE Form 17005

18 Form 708