Hirth F 33 A/B, Service Manual

Page 1: ...en KG Service Manual Engine F 33 A B Göbler Hirthmotoren KG Max Eyth Str 10 Germany 71726 Benningen Tel 0049 7144 8551 0 Fax 0049 7144 5415 e mail info hirth engines de internet www hirth engines de Stand 02 02 05 DOC_F33_B_E_0 01 ...

Page 2: ... engine or before starting the engine In the interest of the ongoing developments of our products we reserve the right to change the delivery volume in form technique and supply We also ask for your understanding that the data in this instruction manual gives no further claims Stand 02 02 05 DOC_F33_B_E_0 01 ...

Page 3: ...llation 4 10 1 2 2 Air supply of the engine 5 10 1 2 3 Fuel supply of the engine 5 10 1 2 3 1 F 33 A 5 10 1 2 3 2 F 33 B 6 10 1 2 4 Carburettor control 6 10 1 2 5 Adjustment of idle speed 6 10 1 2 6 Adjustment of the idle fuel mixture 7 10 1 2 7 Fixation of plug socket at hanging installation 7 10 1 2 8 Cut off of the ignition system 7 10 1 3 Supervising the engine 7 10 1 3 1 CHT cylinder head tem...

Page 4: ...3 7 3 4 1 1 Maintenance of the variable jet carburettor 3 7 3 4 1 1 1 Basic adjustment of fuel mixture screw 3 7 3 4 1 2 Maintenance of the diaphragm carburettor 3 7 3 4 2 Air filter 4 7 3 4 2 1 Installation and de installation of the air filter 4 7 2 4 2 1 Air filter cleaning 4 7 3 4 3 Fuel line and pulse line 4 7 3 4 3 1 Fuel line check 4 7 3 4 3 2 Pulse line check 4 7 3 4 4 Spark plugs and plug...

Page 5: ...ylinder head temperature is to high 7 7 4 Wiring diagram ignition system 1 3 4 1 Wiring diagram single ignition system 1 3 4 2 Wiring diagram dual ignition system 1 3 4 3 Wiring diagram single ignition lighting system 2 3 4 4 Wiring diagram dual ignition lighting system 2 3 4 5 Wiring diagram single ignition lighting system with 3 3 electric starter 4 6 Wiring diagram dual ignition system with 3 3...

Page 6: ...on consists of an aluminium alloy and is tighted by two piston rings against cylinder thread The piston is tied with connecting rod by piston pin and needle bearing The crankshaft consists of Chromoly steel 42CrMo4 and is mounted in two ball bearings It concerns to a manufactured crankshaft The output drive is conical and equipped with centric external thread for mounting a junction cone on output...

Page 7: ...ked with intake window and the inlet diaphragm of crankcase by a rubber flange On this occasion the rubber flange is screwed with cylinder screws and locking discs and the carburettor is tightened by a clamp in the rubber flange On the inlet side of carburettor is positioned a dry air filter which is tightened on the carburettor by a clamp Illustration 1 1 2 1 Fuel mixture system with variable jet...

Page 8: ...uel mixture system with diaphragm carburettor 1 1 3 Description of the ignition system The ignition system Illus 1 1 3 1 1 1 3 2 is available as single and dual ignition It consists of stator plate flywheel one ignition coil for single ignition two ignition coils for dual ignition and ignition cables with spark plug connectors The ignition system is all electronic Generator power at 50 W is availa...

Page 9: ...M 8 for engine mounting at engine F33 A Illus 1 2 1 1 are positioned at bottom side of crankcase Illustration 1 2 1 1 Attachment threads The engine mounting should be conditioned in that way that transferred impulse from the engine to the mounting will be taken over as high wide as possible Stand 02 02 05 DOC_F33_B_E_0 01 ...

Page 10: ... The engine has to be installed in that way that the supplied fresh air is sufficient for cooling and for the carburettor For an enclosed installation it has to be ensured that hot exhausted cooling air is not supplied to carburettor because this leads to drastic reduction of power Also it has to be ensured that hot exhausted cooling air could escape from case without obstruction because this lead...

Page 11: ...ne it should be mounted this way that diaphragm is vertical to crankshaft axle wear or ignition side Herewith it is guaranteed that vibrations at crankshaft axle due to the engine not impair the action and function of the diaphragm pump due superimposition of the vibrations 1 2 3 2F 33 B The fuel supply of engine F 33 B is completely provided by diaphragm carburettor Inside the carburettor is inte...

Page 12: ...aid together one ignition circuit can break down With connection to the ground the ignition system will be cut off 1 3 Supervising the engine It is strongly recommended to check the cylinder head temperature exhaust gas temperature and the fuel pressure The fundamental adjustment of the engine guarantees a function without problems under the provided mounting conditions As Göbler Hirthmotoren does...

Page 13: ...Table 1 5 1 is measured at outlet manifold Hereby a rod shaped thermocouple element is clamped into a special sealed screwed joint The positioning of the thermocouple element is very important The thermocouple element should be inserted into the outlet manifold as deep as the peak of the thermocouple element is in the middle of the outlet pipe tube The gap between piston rim at the outlet and the ...

Page 14: ...nation with G 33 Ignition system Electronic ignition system single or dual Generator 50 W 12 V Option Spark plugs single ignition 023 22 Hirth B 8 HS NGK W 24 FS U N D Spark plugs double ignition 023 26 Hirth C 8 HSA NGK U 24 FS U N D Ignition timing 16 v TDC at 2000 1 min Fuel mixture 1 Dellorto PHBE 1 Mikuni BN34 1 air filter try Cooling Air cooled free air Oil Fuel mixture 1 50 Fuel 95 Octan Tw...

Page 15: ...GH F33 BDA 1 6 Installation sketch Stand 02 02 05 DOC_F33_B_E_0 01 1 1 9 230 299 5 131 5 85 M 8 4x 74 5 2 0 9 6 3 8 0 8 2 90 70 ...

Page 16: ...WITH RESISTANCE SPARK PLUGS AND RESISTANCE SPARK PLUG CONNECTOR ALWAYS ENGINE RUN WARM UP ITSELF 2 2 run in recommendation There are no special run in recommendations for the engines of Göbler Hirthmotoren KG because the nickel silica alloy of the cylinder the aluminium piston and the grey cast iron of the piston rings do not have to run in one against the other The engines are at full throttle fr...

Page 17: ...m checking of leaking of soiled filters overhaul if necessary 2 3 Start Procedure 1 Ensure fuel providing fill tank open fuel cock 2 If engine is cold manipulate the choke If engine is warm or hot do not manipulate the choke Choke lever in vertical position for a cold starting in the case of hand lever choke 3 Set throttle hand lever in idling slide in carburettor in idling 4 Ignition system put i...

Page 18: ...eration of the engine cylinder head and exhaust gas temperatures have to be controlled If permissible maximum temperature of cylinder head and or exhaust are not exceed engine can run without limit also full load in maximum performance It is also recommended to control fuel pressure during operation Lack in fuel pressure can cause loss in performance and set out engine 2 5 cut off the engine Befor...

Page 19: ... Tools Description Size Description Size Torque wrench 0 50 Nm Hexagon head socket wrench SW 5 Engineers wrench SW 10 Engineers wrench SW 13 Engineers wrench SW 17 Socket wrench SW 24 Screwdriver Sparkplug wrench 20 6 20 8 Special tools Flywheel withdraw W 85 Piston ring clamp piston mounting assistance W 108 15 Initial Torque Values Description Torques Description Torques M6 9 6 11 Nm M8 23 28 Nm...

Page 20: ...ck ignition timing Every 100 h Check electrode space of spark plugs Every 50 h Exhaust system Check fixed positioning and damages Every 25 h Check exhaust slot for trace of coke Every 100 h 3 3 change of component Parts mentioned on table 3 3 1 should be replaced after indicated running hours If wears appear earlier on this parts or other parts of the components replace them accordingly Please con...

Page 21: ... for idle slightly against detent than open to 1 5 revolutions 3 4 1 2 Maintenance of the diaphragm carburettor Check carburettor for leakings If there are leakings change the gaskets according Open side of jet of the carburettor provided with a round bulge and a small drilling every 100 hours of running With this check inlayed diaphragm for damages and if need be renew it Clean jets with fuel and...

Page 22: ...g with spark plug wrench Before installation of the new or still useable spark plug check in every case electrode distance 0 6 mm through feeler and if need adjust Tie spark plug through spark plug wrench and torque wrench with mentioned torque on the cylinder head 3 4 4 3 Condition of the spark Plug Spark plugs should show dry light brown shade on middle electrode the isolator of the middle elect...

Page 23: ...sion of cylinder head for combustion sediments carbonization If there is a strong sediment formation remove carbon and change kind of oil possibly 3 5 Trouble Shooting 3 5 1 Engine Does Not Start or is Difficult to Start Cause Lack of fuel Solution check that fuel switch is on check that fuel filter is clean check that fuel is in the tank Cause Defective or discharged battery Solution Replace batt...

Page 24: ... fuel filter Solution Clean or renew fuel filter Cause wrong too oleiferous mixture ratio of fuel Solution pour out tank and fill in prescribed fuel mixture Cause spark plug connector damaged Solution renew the spark plug connector 3 5 4 Engine Does Not reach full power Cause Dirty air filter Solution Clean or renew filter Cause Dirty fuel filter Solution Clean or renew the fuel filter Cause wrong...

Page 25: ...adjust ignition timing send engine to Göbler Hirthmotoren or authorized supplier 3 5 5 cylinder Head Temperature is too high Cause engine gets less cooling air Solution arrange mounting so that engine gets sufficient and unhindered cool air Cause Dirty carburettor Solution Clean carburettor Stand 02 02 05 DOC_F33_B_E_0 01 ...

Page 26: ...g diagrams are referring to single and dual ignition systems with and without generator coil just as without and with electric starter Attention Read also the Hirth Information 0065 Additional Information on voltage supply and ignition system Stand 02 02 05 DOC_F33_B_E_0 01 ...

Page 27: ...ize of line wire 1 5 mm2 c Schaltplan Einfachzündung b Wiring diagram single ignition a Buchstabe Anzahl Änderung Tag Name F 33 Rohteil Nr Maßstab Zeichnungs Nr 14 A 135 Stand 02 02 05 DOC_F33_B_E_0 01 M a sse G ehäuse G round C ase S c h a l t e r S w i t c h 020 39 1 020 39 2 Zündung I gn iti on r o t r e d s chw a rz b l ac k b r a u n b r o w n Z ü n d k e r z e S p a r k p l u g 0 2 3 2 2 D Z...

Page 28: ... c h Zündung I gn iti on F 334 B1U 020 39 2 r o t r e d s chw a rz b l ac k b r a u n b r o w n b r a u n b r o w n Z ü n d k e r z e S p a r k p l u g 0 2 3 2 6 D Z ü n d k e r z e S p a r k p l u g 0 2 3 2 6 D Zünd spu l e I gn iti on co il 020 39 3 ro t red Zünd spu l e I gn iti on co il 020 39 3 ...

Page 29: ...g Name F 33 Rohteil Nr Maßstab Zeichnungs Nr 14 A 136 Stand 02 02 05 DOC_F33_B_E_0 01 s chw a rz b l ac k S i c h e r u n g F u s e R eg l e r G l e i ch r i ch t e r R ec tifi e r R egu l a t o r 029 5 r o t r e d M a sse G ehäuse G round C ase b r a u n b r o w n S c h a l t e r S w i t c h g e l b r o t y e l l o w r e d ge l b ye ll ow ge l b ye ll ow 5 A Zündung I gn iti on 021 39 1 020 39 2 ...

Page 30: ...h generator coil a Buchstabe Anzahl Änderung Tag Name F 33 Rohteil Nr Maßstab Zeichnungs Nr 14 A 137 Stand 02 02 05 DOC_F33_B_E_0 01 Sicherung Fuse 5 A Regler Gleichrichter Rectifier Regulator 029 5 rot red Masse Gehäuse Ground Case braun brown Schalter switch gelb yellow gelb yellow schwarz black Zündung Ignition F 334 D1U 020 39 2 braun brown rot red Zündkerze spark plug 023 26D braun brown Zünd...

Page 31: ... 14 A 138 Stand 02 02 05 DOC_F33_B_E_0 01 Zündung I gn iti on r o t r e d 021 39 1 020 29 2 S i c h e r u n g F u s e r o t r e d b r a u n b r o w n B a t t e r i e b a t t e r y 1 2 V g e l b r o t y e l l o w r e d S c h a l t e r S w i t c h Reg l er G l e i chri ch t er Rec tifi er Regu l a t or 029 5 ge l b ye ll o w 5A sch war z b l ack ge l b ye ll o w Gehäuseau f Masse Case t ogr ound b r...

Page 32: ...02 02 05 DOC_F33_B_E_0 01 S i c h e r u n g F u s e ge l b ye ll ow ge l b r o t ye ll ow r ed b r a u n b r o w n B a t t e r i e b a t t e r y 1 2 V Reg l e r G l e i ch ri ch t e r Rec tifi e r Regu l a t o r 029 5 r o t r e d 5A g r ün ge l b g r een ye ll ow S c h a l t e r S w i t c h Zündung I gn iti on F 334D 1U 020 39 2 schwa rz b l ack ge l b ye ll ow r o t r e d Scha lt e r Sw it ch b r...

Page 33: ...schnitt allgemein 1 5 mm2 d Geprüft 12 01 99 Rögele General size of line wire 1 5 mm2 c Schaltplan DZ mit Gen spule E St Leitungsquerschnitt von zu E Starter 16 mm2 b Wiring diagram DI with gen coil E St Size of line from to E Starter 16 mm2 a neu 14 05 03 T F F 33 Buchstabe Anzahl Änderung Tag Name Rohteil Nr Maßstab Zeichnungs Nr 14 A 140 Stand 02 02 05 DOC_F33_B_E_0 01 gelb yellow ...