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5.4 CYLINDER HEAD REMOVAL

Loosen each of the four cylinder head bolts

evenly 1/4 turn each time in a cross pattern

until loose.

Remove bolts (A)

Remove cylinder head and head gasket.

CYLINDER HEAD DISASSEMBLY

Using a valve spring compressor, compress

the valve spring and remove the spilt keeper.

NOTE:

To prevent loss of tension, do not

Compress the valve spring more than

necessary.

Remove spring retainer and spring.

NOTE:

The valve springs should be

positioned with the tightly wound coils against

the cylinder head on progressively wound

springs (A).

Содержание Cobra 220

Страница 1: ...AEON MOTOR CO LTD SERVICE MANUAL...

Страница 2: ...L AND INSTALLATION 17 4 LUBRICATION 19 5 CYLINDER HEAD VALVES 29 6 CYLINDER PISTON 40 7 TRANSMISSION KICKSTARTER 49 8 FRONT WHEEL SUSPENSION AND STEERING 61 9 REAR WHEEL SYSTEM 80 10 FENDERS AND EXHAU...

Страница 3: ...tact with the electrolyte flush the area thoroughly with water If you get the electrolyte in your eyes flush with water and contact a doctor immediately HOT PARTS Engine and exhaust pipe become very h...

Страница 4: ...y SUSPENSION Front Rear BRAKES Front Rear TIRES Front Rear Specifications subject to change without notice Air cooled 4 stroke vertical cylinder 195 8 cc 65 59mm 9 6 1 1 45 N m 5000 rpm Mikuni C D I E...

Страница 5: ...4 1 4 SERIAL NUMBER The frame serial number is stamped on the front frame And stick a bar code paper to cover it The engine number is stamped under the crankcase...

Страница 6: ...nut Rear wheel bolt Exhaust muffler mounting bolt Engine hanger bolt Rear axle holder bolt Swing arm pivot nut Rear shock absorber mounting nut 5 N m 3 5 lbs ft 10 N m 7 2 lbs ft 22 N m 16 lbs ft 35...

Страница 7: ...ansmission lubrication 2 1 MAINTENANCE DATA SPECIFICATION SPARK PLUG Spark plug cap Recommended spark plugs Throttle lever free play Idle speed Brake lever free play Drive chain slack Front rear tire...

Страница 8: ...tle Cable ETC Switch 50H 6 M 500 800 Inspect adjust lubricate replace if necessary E Choke cable 50H 6 M 500 800 Inspect adjust lubricate replace if necessary E Carburetor air intake ducts flange 50H...

Страница 9: ...Timing 100H 12 M 1000 1600 Inspect Wiring 100H 12 M 1000 1600 Inspect for wear routing security apply dielectric grease to connectors subjected to wear mud etc Clutches drive and driven 100H 12 M 1000...

Страница 10: ...Inspect for deterioration damage cuts and nicks or kink in the throttle cable replace it if necessary Check the throttle lever free play should be not more than 5 10 mm at the tip of the throttle leve...

Страница 11: ...tabs in the fuel tank 3 Remove clips from air box cover A and remove cover Inspect the gasket It should adhere tightly to the cover and seal all the way around 4 Install the new one 5 Reinstall filter...

Страница 12: ...ry by carefully bending the side electrode SPARK PLUG GAP 0 6 0 7 mm RECOMMENDED REPLACEMENT PLUG NGK CR7HSA 6 Check the sealing washer and replace with a new one if damaged 7 With the sealing washer...

Страница 13: ...g nut Tighten the axle holder lock nut Torque 90N m 65 Ft lbs When the drive chain becomes very dirty it should be removed cleaned and lubricated with the specified lubricant Clean the drive chain wit...

Страница 14: ...he standard is 10 20 mm Adjust the free play of the front brake lever by turning the adjuster on the brake lever assembly Inspect the rear brake lever and cable for excessive play or other damage Repl...

Страница 15: ...he front wheels turned straight ahead When there is excessive play inspect the tie rod kingpin bushing and ball joint Steering shaft holder bushing Remove the front fender Remove the steering shaft ho...

Страница 16: ...both marks be equally positioned in order to get an accurate measurement 4 Measure the distance between the marks and record the measurement Call this measurement A 5 Rotate the tires 180 by moving v...

Страница 17: ...engine STEP1 Place a drain pan beneath oil pan and remove drain plug from the crankcase Allow oil to drain completely STEP2 Reinstall the drain plug Tighten to specification STEP3 Add the proper amou...

Страница 18: ...Remove the following parts as required Seat Left and Right Side Covers Fuel Tank Cover Front Cab Fuel Tank 8 Remove exhaust pipe 9 Remove airbox 10 Remove carburetor Insert a clean shop towel into the...

Страница 19: ...18 3 2 ENGINE REPLACEMENT Engine installation is essentially the reverse order of removal The torque of engine hanger bolt is 30 Nm Route the wires and cable properly in reverse order of removal...

Страница 20: ...cement of the engine oil oil filter screen and assembly of the oil pump Fill the oil pump with clean oil when reassembling the pump SPECIFICATIONS Engine Oil Capacity 0 8 1 0 Liters Engine Oil Recomme...

Страница 21: ...l to its true level in the engine sump 3 Stop engine and check oil level sight glass 4 Check to see that the oil level is in the normal range The level should be at minimum halfway between to the top...

Страница 22: ...e sealing surfaces of the drain plug and crankcase should be clean and free of burrs nicks or scratches 7 Reinstall drain plug and torque to 14 ft lbs 19Nm 8 The oil filter is located on the right sid...

Страница 23: ...ON 1 Remove stator housing bolts and remove housing 2 Remove the start drive gear and shaft by pulling the shaft and tilting the gear slightly Flywheel removal generally is not required 3 Measure the...

Страница 24: ...joint flywheel nut and washer 7 Install Flywheel Puller PN PA 47308 and remove flywheel CAUTION Do not hammer or strike the tool while attached to the crankshaft end which may become damaged 8 Remove...

Страница 25: ...d parts 15 Using the Slotted Nut Socket remove the balance shaft slotted nut A NOTE Slotted nut is a right hand thread 16 Remove cam chain drive sprocket B drive sprocket C and woodruff key from balan...

Страница 26: ...rive gear 23 Remove the oil pump retaining screws 24 Inspect the sprockets and chain for wear or damage Inspect chain for worn or missing rollers or damage Replace chain anytime the oil pump is replac...

Страница 27: ...OIL PUMPASS Y INSTALLATION 1 Install the crankshaft gear woodruff key and slotted nut 2 Install the balance shaft gear and align the mark with the crankshaft gear mark as shown 3 Install the woodruff...

Страница 28: ...27 4 Install the oil pump 5 Install the chain A over the sprocket on the balance shaft gear B 6 Install the washer and nut Torque to specification...

Страница 29: ...28 7 Install the oil pump galley 8 Install flywheel key flywheel washer and nut 9 Install stator housing...

Страница 30: ...s sure the orifice is not clogged and the gasket O ring and dowel pins are in place SPECIFICATIONS ITEM STANDARD SERVICE LIMIT Cylinder compression 160 190 PSI Cam lobe height IN EX 29 795 29 56 29 40...

Страница 31: ...or damaged valve seats Burned or bent valve Incorrect valve timing Weak valve spring Cylinder head Leaking or damaged head gasket Warped or cracked cylinder head Faulty cylinder or piston Excessive n...

Страница 32: ...31 5 3 CAM SHAFT ASS Y REMOVAL Remove the cylinder head cover Remove the two cam chain tensioner falange bolts Remove the nuts A and washers Remove the camshaft holder and dowel pins...

Страница 33: ...or uneven wear replace the rocker arm NOTE Always inspect camshaft lobe if rocker arms are worn or damaged Remove each rocker arm shaft using the 10 mm hex bolt that secures the lock plate Measure the...

Страница 34: ...the cam chain from the sprocket by tilting the cam assembly and simultaneously lifting the chain INSPECTION Inspect the cam lobes surface and height of cam lobes for wear or damage SERVICE LIMIT IN 2...

Страница 35: ...ad gasket CYLINDER HEAD DISASSEMBLY Using a valve spring compressor compress the valve spring and remove the spilt keeper NOTE To prevent loss of tension do not Compress the valve spring more than nec...

Страница 36: ...rements are out of specification Remove valve seals Note Replace seals whenever the cylinder head is disassembled Hardened cracked or worn valve seals will cause excessive oil consumption and carbon b...

Страница 37: ...ound They must be replaced if worn bent or damaged Measure diameter of valve stem with a micrometer in three places and in two different directions six measurements total Replace if excessive wear is...

Страница 38: ...avoid damaging valve seal Dip valve spring and retainer in clean engine oil and install spring with closely spaced coils toward the cylinder head Place retainer on spring and install valve spring com...

Страница 39: ...the cylinder head on the cylinder Install the two 6 mm bolts but do not tighten Install the cam according to the Cam shaft Timing procedure Verify the cam chain is in Place around the crankshaft gear...

Страница 40: ...oop the cam chain over the sprocket while verifying the cam is inserted with the alignment marks parallel to the gasket surface Apply clean engine oil liberally to the valve springs cam chain rocker a...

Страница 41: ...SPECIFICATION ITEM STANDARD SERVICE LIMIT Cylinder I D 65 65 01 Taper 0 05 Out of round 0 05 Warp across top 0 05 Piston Piston O D 64 96 64 98 Piston pin Piston pin bore 15 997 16 Piston rings Piston...

Страница 42: ...essive carbon build up on piston or combustion chamber wall Knocking or abnormal noise Worn piston and cylinder Excessive carbon build up Excessive smoke Worn cylinder piston or piston rings Improper...

Страница 43: ...ylinder head lightly with a plastic hammer until loose Remove the cylinder head and head gasket Remove cam chain guide at front of cylinder Remove the two 6 mm cylinder base bolts Tap cylinder lightly...

Страница 44: ...h the top ring Using a piston ring pliers Carefully expand ring and lift it off the piston CAUTION Do not expand the ring more than the amount necessary to remove it from the piston or the ring may br...

Страница 45: ...scratches or damage Inspect cylinder for taper and out of round with a telescoping gauge or a dial bore gauge Measure in two different directions front to back and side to side on three different lev...

Страница 46: ...om the bottom of the piston at a right angle to the direction of the piston pin Subtract this measurement from the maximum cylinder measurement obtained earlier Measure piston pin bore Replace piston...

Страница 47: ...thickness gauge Replace piston and rings if ring to groove clearance exceeds service limits 6 5 PISTON INSTALLATION CAUTION Do not re use circlips Circlips become deformed during the removal process...

Страница 48: ...N casting mark facing the intake side of engine The piston pin should be a push fit into the piston Install the other circlip with the gap facing up or down Push the piston pin in both directions to m...

Страница 49: ...d area of the cylinder Place the cylinder on to the studs Loop the cam chain through the cylinder chain room and secure with mechanic s wire Allow cylinder to fully seat on the piston and support bloc...

Страница 50: ...the tube should be drained SPECIFICATIONS ITEM STANDARD mm SERVICE LIMIT mm Driven the width 19 8 20 2 19 0 Weight roller O D 17 9 18 1 17 40 Movable drive face I D 27 98 28 0 28 03 Drive face collar...

Страница 51: ...50 7 2 TROUBLESHOOTING Engine starts but can t travel Worn driven belt Worn clutch lining Damaged driven face spring Low engine power Worn driven belt Worn weight roller Dirty driven face...

Страница 52: ...rom the crankshaft Remove the fixed sheave A starter pawl B and slide bushing C Inspect the fixed sheave and slide bushing for scoring grooving or abnormal wear Replace any worn or damaged parts Remov...

Страница 53: ...Remove and inspect the slide bushings and cam plate Replace any components that found to be worn excessively or appear abnormal To reassemble reverse the procedures Do not apply any lubricants to the...

Страница 54: ...d removing the nut from the shaft Pull the entire clutch off as an assembly Set the driven clutch assembly on a flat surface Remove the cover spring washer stack and ball bearing retainer Inspect comp...

Страница 55: ...either the measurements or the lining indicates excessive wear replace the clutch cover Inspect the condition of the friction pads Measure the amount of remaining pad using a depth caliper Inspect th...

Страница 56: ...tension the measurement should be no less than 3 50 89 mm If out of specification replace the spring Remove the outer roller pin cover by turning and pulling up on the cover Replace the 2 o rings Remo...

Страница 57: ...ller pin cover Place the washer onto the threaded shaft and apply LoctiteTM 272 to the threads Have an assistant available for final assembly Install the compression spring Place the friction pad asse...

Страница 58: ...washer from kick starter spindle composition Remove the kick starter spindle ass y Remove the kick starter idle gear ass y Remove the kick spindle bush INSPECTION Inspect the kick starter spindle comp...

Страница 59: ...tarter spindle bush for wear of damage Inspect the kick driven gear and spring for wear or damage 7 5 KICK STARTER ASSEMBLY Install the kick driven gear and spring Install the kick spindle bush return...

Страница 60: ...ing the primary sliding sheave and the cam plate assembly NOTE When installing the primary sliding sheave and the cam plate assembly hold the cam plate and the primary sliding sheave together The weig...

Страница 61: ...the drive clutch nut to specification CVT Drive Clutch Nut Torque 40 ft lbs 55 Nm Install the driven clutch assembly and driven clutch nut Torque the nut to specification Apply LoctiteTM 272 to the se...

Страница 62: ...61 8 FRONT WHEEL SUPENSION AND STEERING 8 1 PARTS DRAWING 8 2 TROUBLESHOOTING 8 3 HANDLEBAR SYSTEM 8 4 THROTTLE HOUSING 8 5 FRONT WHEEL 8 6 FRONT BRAKES 8 7 STEERING SYSTEM 8 1 PARTS DRAWING...

Страница 63: ...62...

Страница 64: ...O ONE SIDE Bent tie rods Wheel installed incorrectly Unequal tire pressure Bent frame Worn swing arm pivot bushing Incorrect wheel alignment POOR BRAKE PERFORMANCE Brake shoes worn Worn brake drum Bra...

Страница 65: ...wo fix screws Remove the throttle lever housing on the right handlebar Remove brake lever bracket assembly Remove the handlebar switch on the left handle bar Remove rear brake lever bracket ass y Remo...

Страница 66: ...65 Installation Install the switch housing Tighten two screws securely Install the throttle lever housing and brake lever bracket ass y...

Страница 67: ...ound by placing a jack or other support under the frame Remove the front wheel nuts washer and wheels Installation Install and tighten the four wheel nuts torque 54 N m 40 lbs ft Remember put a cotter...

Страница 68: ...n into caliper bore slowly using a C clamp or locking pliers NOTE Brake fluid will be forced through compensating port into master cylinder fluid reservoir when piston is pushed back into caliper Remo...

Страница 69: ...Replace pads if worn beyond the service limit FRONT PAD ASSEMBLY WARNING If the brake pads are contaminated with grease oil or liquid soaked do not use the pads use only new clean pads Install pads w...

Страница 70: ...to prevent air from entering the brake system Be sure fluid level in reservoir is between MIN and MAX lines and install reservoir cap Install wheels and torque wheel nuts BRAKE BURNISHING It is recom...

Страница 71: ...beyond service limit Brake Disc Thickness New 0 150 0 164 3 810 4 166 mm Service Limit 0 140 3 556 mm Brake Disc Thickness Variance Service Limit 0 002 0 051 mm difference between measurements Mount...

Страница 72: ...ll disc on hub CAUTION Always use new brake disc mounting bolts The bolts have a pre applied locking agent which is destroyed upon removal Install new bolts and tighten to specified torque Front Brake...

Страница 73: ...liper mounting bolts B and remove the brake caliper FRONT CALIPER INSTALL Install caliper on hub strut and torque mounting bolts to 18 ft lbs 24 Nm Install brake line and tighten securely with a line...

Страница 74: ...T CALIPER DISASSEMBLY Remove the c clips A from the caliper sliding bolts Remove the caliper slide bolts B mounting bracket C and brake pads D Remove the outside dust boot E Remove the piston and dust...

Страница 75: ...alcohol NOTE Be sure to clean seal grooves in caliper body FRONT CALIPER INSPECTION Inspect caliper body bore for nicks scratches or wear Measure bore for roundess Replace if damage is evident Inspect...

Страница 76: ...per and seat the dust boot into caliper groove Be sure groove is clean and free of residue or brakes may drag Install piston with a twisting motion while pushing inward Piston should slide in and out...

Страница 77: ...on the backside of the wheel Remove the two brake caliper hex bolts B and the brake caliper Remove hub cap C cotter pin front spindle nut and washer Remove the outer spacer D from the spindle Inspect...

Страница 78: ...on the upper A arm and pull the top ball joint from the steering spindle Push down on the lower A arm to move the lower ball joint from the steering spindle Tie rod inspection To check for play in th...

Страница 79: ...determine the cause Steering shaft removal Remove the handle bar cover and handle bar Remove the front fender Remove handlebar lower holder Unscrew steering shaft holder bolt remove steering shaft ho...

Страница 80: ...der Install the holder and oil seal tighten with the nuts Torque 33 N m 24 lbs ft Installation of steering shaft Install the steering shaft nut and tighten it This nut is under this steering shaft Tor...

Страница 81: ...80 9 REAR WHEEL SYSTEM 9 1 PARTS DRAWING 9 2 TROUBLESHOOTING 9 3 REMOVE REAR WHEELAND REAR BRAKE 9 4 DRIVE MECHNISM 9 1 Parts Drawings...

Страница 82: ...rings are worn Faulty tires Rear axle bearing holder is faulty Brake Drag Incorrect brake adjustment Sticking brake cam Sticking brake cable Hard Suspension Bent damper rod Faulty swing arm pivot bush...

Страница 83: ...side brake lever Hydraulic Cylinder Driving Rod The rear brake cable fixing set Brake Pump Foot Brake Padal Hydraulic Cylinder Driving Rod Brake Pump Handlebar Front Brake Cable Rear Brake Oil Tube Re...

Страница 84: ...83 Brake Oil Tank Left Side Brake Lever Right Side Brake Lever The cable connects to front brake disc The cable connects to rear brake disc...

Страница 85: ...84 The Brake Adjustment STEP 1 Take off the rear brake fixing set and the bolt of brake pump Brake Oil Tube Rear Brake Caliper Rear Brake Cable Fixing Set...

Страница 86: ...t changes the distance between the brake pump and the hydraulic cylinder driving rod Make the nut touch the surface of the rod and revolve 1 circle 360 then confirm the nut location and spin the rod t...

Страница 87: ...mal if the brake oil could drain automatically please try this for couple times for confirmation If it doesn t work please be back to STEP 2 and decrease the distance until the oil could run out norma...

Страница 88: ...le 1 Spin the gap adjuster on the left lever till the shortest position 2 Adjust the adjusting screw and keep the gap being 2 3 mm Adjusting Screw Brake Cable Gap Adjuster Rear Brake Cable Fixing Set...

Страница 89: ...DRIVE MECHNISM Removal and inspection Remove the rear wheel and the rear brake Remove the skid plate under swing arm Remove the drive chain cover Disassemble the chain retaining clips and master link...

Страница 90: ...nout limit is 0 5 mm Check the turning of inner race of bearing with fingers The bearings should turn smoothly and quietly Replace if necessary Also check that the bearing outer race fits tightly in t...

Страница 91: ...chains on the driven sprocket Assemble the master link and retaining clip NOTE The retaining clip direction Install the drive chain cover Assemble the chain under cover Install the skid plate Install...

Страница 92: ...INSTALLATION 10 1 REAR FENDER REMOVAL Pull the Seat Release Bar to take off the seat This seat release bar is under the right side of the rear fender Rear Cab 4 bolts at rear of cab 8 screws secure fo...

Страница 93: ...ONT FENDER REMOVAL Front Cab 2 screws at rear of cab to frame 2 screws at front of cab to frame 8 screws secure footwell to front cab unless removed previous Side Covers 2 plastic inserts and 1 screw...

Страница 94: ...pipe bolts that fixed with engine NOTE Do not service the exhaust pipe while they are hot Remove the exhaust pipe bolts mounting on the frame below the rear fender Remove the exhaust pipe carefully 10...

Страница 95: ...E STOP SWITCH AT LEFT OR RIGHT POSITION GEARSHIFT BAR IS NOT AT NEUTRAL POSITION FAULTY IGNITION COIL FAULTY GENERATOR FAULTY CDI UNIT POORLY CONNECTED Between CDI and ignition coil Between alternator...

Страница 96: ...IGNITION SYSTEM FAULTY ENGINE STOP SWITCH ENGINE PROBLEMS HEAD LIGHT DO NOT WORK THE SWITCH DO NOT PUSH TO THE ON POSITION THE LIGHT BULB IS BURN OUT NEED BE REPLACED 11 2 IGNITION COIL Remove the sp...

Страница 97: ...s sulfuric acid electrolyte Contact with skin or eyes may cause severe burns Wear protective clothing and a face shield Electrolyte is poisonous Drink large quantities of water or milk and call a phys...

Страница 98: ...ing is preferred 11 8 ELECTRIC STARTER Information A weak battery may be unable run the starter motor quickly enough If the battery voltage is enough while the engine is not cranking the starter motor...

Страница 99: ...reach up under the front cab Rotate the socket 2 counterclockwise and pull it away from the headlight assembly Install the new headlamp Reinstall all components TAILLIGHT BRAKELIGHT LAMP REPLACEMENT...

Страница 100: ...ITE 11 1 25 YELLOW RED 19 0 85 W A T H E T B L U E 2 7 BLACK BLUE 4 YELLOW 12 1 25 B L U E 2 0 0 8 5 BLUE RED 28 BROWN 5 0 85 P I N K 1 3 BLUE WHITE 21 0 85 YELLOW BLUE 29 GREEN 6 0 85 WHITE BLACK 14...

Страница 101: ...fuel tank cap breather hole Faulty Spark Plug Fouled spark Plug Faulty CDI unit Faulty Alternator Faulty engine stop switch Poor connection Broken or shorted wires Broken or shorted ignition coil Wor...

Страница 102: ...ment Check for intake pipe leak Deteriorated insulator O Ring Perform Spark Plug Test Loose or disconnected ignition system wires Faulty spark plug carbon fouled or wet Faulty alternator Faulty CDI un...

Страница 103: ...cause Faulty CDI unit or Pulse generator Check Fuel Flow to Carburetor Lack of fuel in tank Clogged fuel line Clogged fuel valve Clogged fuel filter Clogged fuel tank breather hose Remove Carburetor c...

Страница 104: ...on Leaking head gasket Worn Cylinder and or piston rings Check Carburetor Clean fuel jets Clean float valve Check Spark Plug Clean Re gap spark plug Faulty spark plug Spark plug is incorrect heat rang...

Страница 105: ...earing Damaged steering shaft bushing Bent steering shaft Bent rim Improperly installed wheel hub Excessive wheel bearing play Bent swing arm Bent frame Excessive wear of swing arm bushing Bent Axle B...

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