S6-C Competition - Morini Franco USA
Contents
1. Page 40 MORINI ENGINE GI FRANGLO S6 C SPECIAL 3 SHOE CLUTCH ADJUSTMENT PROCEDURE Screw knob C Clutch shoe stop Check pin A N x Clearance X 0 25 mm Place the clutch on the special tool code 143294 and block it using the screw knob C Position the clutch with one of the shoes blocked against the tool clutch shoe stop Mount the main tool screw knob C and apply a constant torque of 8 5 Nm by using a dynamometric spanner tool with direct torque reading When keeping the torque constant check the clearance X between the shoe and the check pin A using a thickness gauge CAUTION The thickness gauge must make minimal friction against the parts it should not pass freely and should not stick between the clutch shoe and the check pin Make sure that the thickness gauge do pass along the entire thickness Y of the shoes ADJUSTMENT PROCEDURE 1 clutch shoe at a time 1 Unload the dynamometric spanner tool 2 To increase the clearance X turn the screw clockwise 3 To decrease the clearance X turn the screw B aniti clockwise 4 Repeat the procedure for each clutch shoe Page 41 MORINI ENGINE FRANCO S6 C ENGINE COMPONENT INSPECTION AND SERVICE CYLINDER PISTON TABLE Value mm 50 Cylinder 2 39 Piston 39 Piston rings 1 Piston ring 1st slot 39 x 2 0 01 0 025 2 Piston ring 2nd2. MORINI FRANCO MOTORI SERVICE MANUAL S6 C COMPETITION 50 2 stroke liquid cooled e MORINI ENGINE FRANCO S6 ZZ r INDEX TECHNICAL SPECIFICATIONS SPECIAL TOOLS PERIODIC MAINTENANCE LUBRICANTS TROUBLESHOOTING TIGHTENING TORQUE TABLE ENGINE DISASSEMBLY ENGINE REASSEMBLY SPECIAL 3 SHOE CLUTCH DISASSEMBLY REASSEMBLY SPECIAL 3 SHOE CLUTCH ADJUSTMENT PROCEDURE ENGINE COMPONENT INSPECTION AND SERVICE GENERAL PARTS LIST EXPLODED VIEW TABLES Page 1 MORINI ENGINE MOTOR SPECIFICATIONS 63154 2 stroke Nr of CYLINDERS 1 DISPLACEMEN NEE 49 908 cc BORE AND STROKE mm 99 X 41 8 CYLINDER MATERIAL Aluminium with Ni Si carbide coating COMPRESSION RATIO 15 5 0 3 1 SPARK PLUG eegener CHAMPION C53 TIMING SYSTEM Reed valve with 4 carbon fibre flaps MAX RPM 14500 rpm MAX CARBURETOR cuoi b meme 12 14 19 mm diameter INTAKE MANIFOLD Adjustable EURO UNLEADED NC 623 02 R O N 95 LUBRICATION OIL MIXER TYPE 2 AGIP 2T CITY L
3. Drive in the 2 elastic dowel pins in the cover and make sure that they do NOT INTERFERE with the bracket mounting face Assemble the BRACKET on the flywheel cover Assemble the FLYWHEEL COVER placing the rubber fairleads in their proper seats on the cover Secure the FLYWHEEL COVER using 3 SCREWS M5X50 WASHER Tightening torque 1 SCREW M5X20 WASHER 3 4 N m Page 30 MORINI ENGINE GI FRANGLO S6 C CYLINDER PISTON HEAD UNIT DIAGRAM DESCRIPTION NOTES WHEN INSTALLING THE Assemble the ROLLER CAGE PISTON TURN PISTON and PISTON PIN and THE ARROW secure with CIRCLIPS MARK ON THE HEAD OF THE OIL THE PISTON PISTON TO THE EXHAUST SIDE Insert the CYLINDER BASE GASKET and mount the CYLINDER Insert the CYLINDER HEAD DOWEL PINS Apply the O RING SEAL on the CYLINDER HEAD Install the CYLINDER HEAD on the CYLINDER using the dowel pins as centering reference Page 31 MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES Cross tighten Tightening torque 12 14Nm Fit the 4 CYLINDER HEAD NUTS on the stud bolts and tighten Cross tighten Fit the 4 CYLINDER HEAD BOLTS and Tightening torque tighten 10 12 Nm Install the SPARK PLUG and tighten Tightening torque 20 25 Nm Page 32 e MORINI ENGINE GI FRANCO S6 C CARBURETOR UNIT DIAGRAM DESCRIPTION NOTES Insert the CARBURETOR MANIFOLD BASE including the REED VALVE Check the an
4. box YES Check the reed valve gasket False air intake from engine crankshaft oil seals YES Check the integrity of the crankshaft oil seals Replace even if only slightly damaged Page 11 gt MORINI FRANCO MOTORI Noisy engine Incorrect transmission gears assembly Loose transmission nut Transmission noise and rear wheel drag at idling speed ENGINE S6 C Check the assembly of all gears anc parts of the transmission YES YES Check the tightening torque of the clutch nut Check the clutch unit Page 12 MORINI ENGINE GI FRANCO 96 JC ZI L M ZZ L L l l Noisy engine Check the oil level Refill if necessary YES Noisy gears Check the teeth of the drive gears YES visually gt Replace if signs of damage or wear are evident Check the clearance between the YES piston and the cylinder If it does not correspond to the prescribed value replace the cylinder and oiston Noisy cylinder unit BEARING INSPECTION Rotate the bearing inner race by fin YES gerto inspectfor abnormal play noise and smooth rotation while the bearings are mounted in the crankcase Replace the bearing if anything unusual is found Noisy crankshaft bearings Page 13 MORINI FRANCO MOTORI Smokey exhaust Percentage
5. clutch shoe retainer pawls and remove the flat spring Disassemble the clutch shoes the bushings and the 3 clutch shoe socket screws M4x14 Page 39 e MORINI ENGINE FRANCO S6 MOTORI SPECIAL 3 SHOE CLUTCH REASSEMBLY Grassare Lubricate Apply a thin film of molycote grease on the shoe holder plate Insert the clutch shoe socket screws Lubricate the outer diameter working zone of the 3 bushings with molycote grease Insert the bushings in the clutch shoe fulcrums Position and install the clutch shoes on the shoe holder plate using the bushings as centering references urassare Apply a thin film of molycote grease on the working area of the flat spring Assemble the flat spring on the clutch with the 3 clutch shoe retainer pawls and tighten 5 Tightening torque 5 8 6 8 Nm Lubricate the square holes in the flat spring and insert the 3 screw N coupling Grassare Grassare Lubricate Insert 7 Belleville washers in each hole maintaining the correct assembly configuration See figure Sede molle Spring seat Place 2 balls and 1 spring in each of the 3 special clutch adjusting screws Install the 3 adjusting screws making sure that the balls and the the springs remain positioned correctly in the screw housings
6. of YES mixer oil YES Carbon YES deposits Oil mixer YES pump Page 14 ENGINE S6 C Replace the fuel in the tank with new fuel mixed with 296 of the type of oil indicated in the handbook Check that the oil is 10096 synthetic for separate oil mixer pump use Disassemble the cylinder and remove any carbon deposits check the silencer for clogging Disassemble the oil mixer pump and check the flow rate MORINI ENGINE FRANCO S6 ZLL L rl f Z f r V TIGHTENING TORQUES Nm 50 55 Clutch nut Loxeal 83 54 8 10 ene ni Loxeal 83 54 Head clamping bolts 10 12 3 4 Pulley clamping bolts Loxeal 83 54 5 6 Water pump rotor Loxeal 83 54 Spark plug Page 15 MORINI ENGINE GI FRANCO S6 C ENGINE DISASSEMBLY CARBURETOR UNIT DIAGRAM DESCRIPTION NOTES Disassemble the CARBURETOR BEFORE LOOSEN THE SCREWS CHECK ACTUAL MANIFOLD ANGLE Loosen the SCREWS and remove the POSITION CARBURETOR MANIFOLD THE MANIFOLDIS COMPOSED BY 4 ELEMENTS Remove the CARBURETOR MANIFOLD BASE including the REED VALVE Page 16 MORINI ENGINE GI FRANCO S6 C CYLINDER HEAD CYLINDER PISTON DIAGRAM DESCRIPTION NOTES Remove the SPARK PLUG Remove the 4 CYLINDER HEAD BOLTS Remove the 4CYLINDER HEAD NUTS Remove the CYLINDER HEAD PAY ATTE
7. 3162 CRANKCASE PULLER SPECIAL CLUTCH ADJUSTMENT TOOL 143294 Page 4 MORINI ENGINE FRANCO S6 ZLL L A A PERIODIC MAINTENANCE RUNNING IN RECOMMENDATIONS During the running in period i e for approx the first 500 km on the road please note as follows Do never run the engine at maximum revolutions Do never keep the vehicle at maximum speed Do not keep the engine at idle speed for longer time FIRST MAINTENANCE SERVICE to be carried out after 500 600 km Replace the engine oil Check the carburation and adjust if necessary Check the tightness of nuts and bolts See table tightening torques pag 15 Page 5 MORINI ENGINE LUBRICANTS N B Use original MORINI FRANCO MOTORI spare parts onl RECOMMENDED LUBRICANTS ADHESIVES DESCRIPTION CHARACTERISTICS Transmission oil AGIP RADULA 68 SAE 20W N B TRANSMISSION OIL LEVEL CHECK Remove the oil filler cap on the clutch cover and check the transmission oil level through window Page 6 e MORINI ENGINE FRANCO S6 C MOTORI TROUBLESHOOTING The following flow charts give a general outline of the causes and effects when
8. AMPED WITH CLUTCH NUT and the LOXEAL BELLEVILLE WASHER Page 21 gt MORINI ENGINE GI FRANGLO S6 C DIAGRAM DESCRIPTION NOTES Disassemble the SPECIAL CLUTCH and the 2 5mm SPACER RING Remove the CLUTCH BELL and the 0 8mm SPACER RING Page 22 MORINI ENGINE GI FRANCO S6 C CRANKCASE OPENING DIAGRAM DESCRIPTION NOTES lt L d Remove the cylinder STUD BOLTS if necessary BLOCKED WITH Remove the 8 CRANKCASE BOLTS THE CRANKSHAFT IS DRIVEN ONTO d THE BEARINGS Open the CRANKCASE 143162 OPEN THE CRANKCASE FROM FLYWHEEL SIDE USING THE PULLER TOOL Remove the DOWEL PINS and the CRANKCASE GASKET Remove the crankshaft if necessary Page 23 e MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES Remove the OUTPUT SHAFT SNAP RING Remove the OUTPUT SHAFT Inspect the OUTPUT SHAFT BEARING for abnormal play and noise Replace the bearing if anything unusual occurs Remove the SNAP RING Remove the BEARING by using a standard bearing remover set THE BEARING IS DRIVEN INTO THE BEARING HOUSING Toreplace the CRANKSHAFT BEARING and the OUTPUT SHAFT ROLLER CAGE flywheel side follow the same procedure as described above Page 24 MORINI ENGINE GI FRANCO S6 C ENGINE REASSEMBLY WATER PUMP PREASSEMBLY DIAGRAM DESCRIPTION NOTES Preassemble the WATER PUMP SHAFT U
9. EVER POSITION Steel lever 109 Aluminium lever z 96 Check axial clearance 0 1 0 3 mm KICK STARTER LEVER POSITION Steel lever 109 _ Aluminium lever 96 Page 35 ENGINE MORINI FRANCO S6 C MOTORI CLUTCH SIDE Insert the 0 8mm SPACER RING on the crankshaft clutch side Lubricate the clutch bell operating zone of the crankshaft using the grease type ROCOL ASP MOLYCOTE Install the CLUTCH BELL Insert the 2 5 mm SPACER RING Install the CLUTCH ON THE CRANKSHAFT INSERT THE BELLEVILLE WASHER and clamp the clutch using the SPECIAL FRONT CLUTCH NUT LEFT HAND THREAD Add LOXEAL 83 54 to the clutch nut Compass tool and tighten Tightening torque 50 55 N m Check the axial clearance of the clutch bell 0 3 0 5 mm Assemble the clutch cover gasket Page 36 CAUTION In order to avoid any clutch hub jamming on the spline shaft and to ensure any future disassembly operation of the clutch unit make sure to apply LOXEAL 83 54 exclusively on the cluth nut and NOT on shaft end MORINI ENGINE GI FRANGLO S6 C DIAGRAM DESCRIPTION NOTES SEP E j Mount the clutch cover and secure Tightening torque with 6 BOLTS M6 x 30 10 12 N m Insert the OIL DRAIN PLUG Tightening torque WASHER and tighten 8 10 N m Pour 250 cc of oil type AGIP RADULA 68 SAE 20W and fit the il type OIL FILLER CAP GASKET AGIDEZDULERS AFTER C
10. KCASE GASKET on the half crankcase clutch side using the 2 dowel pins for centering Assembly the HALF CRANKCASES Fix 1 x BOLT M6X60 in the postion DO NOT TIGHTEN between the stud bolts and the reed valve zone Fix the remaining 7 X BOLTS M6X50 Cross tighten the bolts using a tightening torque of 10 12 Nm Check to make sure that the crankshaft and output shaft rotate smootly Grease the oil seal housing and the GREASE TYPE oil seal lip carefully GR SM2 143179 Install the CRANKSHAFT OIL SEAL 143180 RINGS and the OUTPUT SHAFT OIL 143181 SEAL RING Trim the crankcase gasket cylinder zone and carburetor zone Page 28 MORINI ENGINE GI FRANGLO S6 C FLYWHEEL SIDE Mount the DRIVEN PULLEY on the water pump shaft and position the PUMP DRIVE BELT on the splined section of the crankshaft Tightening torque 3 4Nm Loxeal 83 54 Secure the pulley with bolt M4x14 Mount the SPROCKET and secure with the SNAP RING Place the UNDER ROTOR SPACER on the crankshaft Caulk the key seat on the crankshaft and insert the FLYWHEEL KEY Mount the FLYWHEEL ROTOR with the 143151 Tightening torque black side facing the crankcase 8 10 Nm Loxeal 83 54 Page 29 gt MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES S era Install the FLYWHEEL STATOR with the output cable facing the crankcase Tightening torque Secure the flywheel stator with 3 4Nm 2 BOLTS M4 x 18
11. NIT by mounting the components in the following order snap ring bearing spacer bearing and secure with the snap ring Insert the complete unit in the HALF CRANKCASE FLYWHEEL SIDE Insert the SPACER RING Insert the SPECIAL SNAP RING THE SEAL RING Insert the SEAL RING MUST ALWAYS BE REPLACED WITH A NEW ONE Reassemble the Tightening torque WATER PUMP ROTOR 5 6 Nm Loxeal 83 54 Page 25 MORINI ENGINE GI FRANCO S6 C CRANKCASE PREASSEMBLY Drive the OUTPUT SHAFT BEARING 143176 LUBRICATE THE into the half crankcase clutch side and HOUSING secure with the snap ring LEAVE THE PRINT ON THE BEARING VISIBLE LUBRICATE THE HOUSING Drive the CRANKSHAFT BEARINGS into the half crankcase clutch side and 143154 LEAVE THE PRINT into the half crankcase flywheel side ON THE BEARING VISIBLE LUBRICATE THE HOUSING Drive the ROLLER CAGE OUTPUT 143156 LEAVE THE PRINT SHAFT into the half crankcase ON THE BEARING flywheel side VISIBLE Page 26 MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES Insert the DRIVE SHAFT in the half crankcase clucth side Insert the SNAP RING onto the second output shaft slot near transmission gear Insert the OUTPUT SHAFT into the half crankcase clutch side and secure with SNAP RING Page 27 MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES Lubricate the CRANKCASE GASKET on both sides Apply the CRAN
12. NTION TO THE DOWEL PINS Check the condition of the O RING HEAD GASKET Replace if excessively worn Page 17 MORINI ENGINE GI FRANGLO S6 C DIAGRAM DESCRIPTION NOTES F Disassemble the CYLINDER and remove the CYLINDER BASE GASKET Page 18 MORINI ENGINE GI FRANCO S6 C FLYWHEEL SIDE DIAGRAM DESCRIPTION NOTES Loosen the clamping BOLTS and MIND THE BRACKET remove the FLYWHEEL COVER INSIDE THE COVER Disassemble the FLYWHEEL STATOR ROTOR LOCK NUT Disassemble the FLYWHEEL 143151 CLAMPED WITH ROTOR LOXEAL Remove the PULLEY CLAMPING BOLT Page 19 MORINI ENGINE GI FRANCO S6 C DIAGRAM DESCRIPTION NOTES The following operations can only be carried out after opening the crankcase Unscrew the WATER PUMP ROTOR BLOCK THE PUMP SHAFT Remove the PUMP SHAFT UNIT including the bearings The pump shaft seal ring must be PAY ATTENTION replaced by every disassembly TO THE SPACERS The 2 bearing snap rings on the BETWEEN THE water pump must be replaced by BEARINGS every disassembly MORINI ENGINE GI FRANCO S6 C CLUTCH SIDE DIAGRAM DESCRIPTION NOTES Ra D L Disassemble the CLUTCH ONLY IF CLUTCH ADJUSTING PLUG NEEDS TO BE ADJUSTED MAKE SURE TO Remove the OIL DRAIN PLUG DRAIN THE cross head ENGINE COMPLETELY Loosen the clamping BOLTS on the cover and remove the CLUTCH COVER Remove the SPECIAL FRONT Compass tool CL
13. OMPLETED ASSEMBLY SAE 20W CHECK THAT THE ENGINE ROTATES SMOOTHLY Page 37 MORINI FRANCO MOTORI lt ENGINE S6 C 56 OIL MIXER PUMP DIAGRAM 155 Ke TOOL CODE DESCRIPTION Preassemble the 2 BEARINGS and SPACER on the OIL MIXER PUMP DRIVE SHAFT and secure with 2 SNAP RINGS The print on the bearings should face the drive end of the shaft Lubricate the bearing housing Drive the OIL MIXER PUMP DRIVE SHAFT UNIT into the half crankcase flywheel side 143155 143342 Tightening torque 5 6Nm Insert the CLEARANCE SPACER Assemble the BEARING SNAP RING Insert the DRIVE BELT onto the DRIVEN PULLEY Install the pulley on the oil mixer pump shaft and the drive belt onto the splined part of the crankshaft Assemble the oil mixer pump on the support bracket and tighten the screw M5x12 In order to simplify the assembly operation of the oil mixer pump make sure that the timing of the driven pulley and the oil mixer pump shaft do match Install the BRACKET with OIL MIXER PUMP into the housing of the half crankcase flywheel side Page 38 gt MORINI ENGINE GI FRANCO S6 C SPECIAL 3 SHOE CLUTCH DISASSEMBLY Remove the 3 special clutch adjusting screws ATTENTION Each screw contains 1 spring an 2 balls Remove the 21 Belleville washers Take note of the assembly configuration Hemove the screw couplings Unscrew the
14. UBRICATION WITH OIL PUMP On request IGNITION eT Electronic with microchip PRIMARY DRIVE GEAR Straight tooth gears Z 14 59 with safety coupling E Hatio 1 4 21 SECONDARY DRIVE GEAR Sprocket Z 10 or Z11 Chain type 1 2 x 3 16roller 7 75 CEE Automatic centrifugal clutch in oil bath Adjustable TRANSMISSION GEAR OIL SAE 20 W quantity 250 cc STARTER Kick starter COOLING With liquid pump Page 2 MORINI FRANCO MOTORI ENGINE S6 SPECIAL TOOLS 143154 143156 143179 143180 143176 143181 Page 3 Description BEARING INSTALLER output shaft BEARING INSTALLER crankshaft BEARING INSTALLER output shaft OIL SEAL INSTALLER output shaft OIL SEAL INSTALLER crankshaft flywheel clutch OIL SEAL MOUNTING PROTECTION crankshaft flywheel clutch MORINI ENGINE SPECIAL TOOLS Figure Code Description OIL PUMP SHAFT INSTALLER 143155 pre assembled 140558 FLYWHEEL REMOVER 14
15. gle position of the Assemble the CARBURETOR MANIFOLD before MANIFOLD on the base and secure tightening the with 4 BOLTS M6X25 bolts Tightening torque 9 10 Nm Assemble the CARBURETOR and TGR ANa argus tighten the CLAMP SCREW Page 33 gt MORINI ENGINE GI FRANCO S6 C CLUTCH COVER DIAGRAM DESCRIPTION NOTES Drive the WATER CIRCUIT DELIVERY PIPE into place Assemble the SPRING on the sliding gear as shown on the figure 143167 Lubricate the inside of the spring using GR MU 3 grease Assemble the SLIDING GEAR on the cover and secure the SPRING between the two stops Assemble the SPACER RING and O RING on the KICK STARTER SHAFT Lubricate the O ring area using GR MU 3 grease Lubricate the KICK STARTER SHAFT in the clutch cover operating zone using grease type MOLYCOTE Install KICK STARTER SHAFT in the clutch cover and make sure that the gear section is engaged properly with the sliding gear After assembly check that the spring of the sliding gear is correctly positioned between the two stops Page 34 gt MORINI ENGINE GI FRANCO S6 Install and load the RETURN SPRING on the kick starter shaft Secure the spring on the backstop in the clutch cover Assemble the SPRING WASHER and secure with the SNAP RING Place the SPACER on the kick starter shaft and secure with the snap ring Assemble the KICK STARTER LEVER and fasten by using the bolt M7x25 KICK STARTER L
16. iameter in the direction perpendicular to the piston axis at 14 5 mm from the skirt Page 44
17. r Disassemble the cylinder head cylinder and piston Hemove the piston rings place them in the cylinder liner and check the amount of wear Replace if excessively worn gt MORINI FRANCO MOTORI Poor acceleration pickup YES Irregular acceleration Page 10 YES ENGINE S6 C Check the cluth shoe thickness and the clutch springs for stretching If excessively worn they should be replaced Check the exact number of turns of the air adjusting screw on the carburetor MORINI ENGINE GI FRANCO 96 JC t rLr X B R r M gt D gt 7 RPR gt 7 7 r m2 2 72 2 R R RQR Q Q R R RB 2 R R R2 m m72 2 Incorrect idling speed Adjust the RPM of the idling speed YES with engine warm by adjusting the screw on the throttle valve of the carburetor Idling speed too high or too low Disassemble the carburetor and YES clean all parts nozzles throttle val ve jet needle float chamber and body with solvent and dry by using compressed air False air intake from carburetor manifold YES Check the integrity of the carburetor manifold gaskets Check the integrity of the rubber YES coupling sleeve that connects the carburetor and air filter
18. slot 39 x 1 25 0 01 0 025 Page 42 MORINI ENGINE FRANCO S6 C CYLINDER PISTON ASSEMBLY SELECTION TABLE CYLINDER PISTON SIZE CODE DIMENSIONS mm ASSEMBLY stamped on part CLEARANCE CYLINDER PISTON 0 010 g 39 39 9995 0 005 0 030 0 015 0 020 0 020 0 015 0 030 0 040 ve 0 025 0 010 0 39 0 020 0 39 0 015 0 030 0 005 E 39 0025 g 39 0 010 0 035 0 F 39 39 CHECK POSITION For correct dimension control 1 7 i 43 MORINI ENGINE FRANCO S6 C CYLINDER CHECK Check the internal surface of the cylinder for signs of seizure or abnormal wear Measure the internal diameter of the cylinder using a bore gauge Wear limit Minimum indicated cylinder selection diameter 0 03mm ake measurements in three different positions along the axis of the cylinder In each position take two measurements one parallel with and the other perpendicular to the crankshaft axis PISTON CHECK Remove the piston rings and check the piston for abnormal signs and wear N B The piston rings are fragile handle with care RING TO GROOVE MEASUREMENT Wear limit 0 08 mm max PISTON BORE MEASUREMENT Maximum permitted diameter 12 0 18 mm Measure the piston outside d
19. the engine is not running correctly Descriptions of solutions for a specific cause are general for more details the reader should consult the disassembly reassembly manual LEGEND OF SYMBOLS EFFECT fault noticed by the user Possible CAUSE of the fault aM Possible general SOLUTION to the fault Page 7 e MORINI ENGINE GI FRANCO S6 C MOTORI Starting problems Faulty spark plug or wrong spark plug heat rating YES Check spark plug and replace if necessary Start the engine with the YES throttle fully open Engine flooded Remove the spark plug ev the engine installa dry spark plug and restart he engine The engine Starts YES Sparking starts at gt Replace the ignition coil high r p m Page 8 e MORINI ENGINE GI FRANCO S6 C Maximum indicated running speed cannot be reached ooiled or clogged YES filter Silencer YES obstructed Cylinder exhaust port soiled with carbon deposits Poor YES YES compression Page 9 Disassemble wash sponge with a 50 solution of petrol and 2T oil leave to dry Clean the filter box using compressed air re assemble Check the silencer for clogging Replace if necessary Disassemble the cylinder and check that the exhaust pipe is clean If the exhaust pipe is partly obstructed b carbon deposits clean it thoroughl using a scrape
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