VEB BERLIN SR59 Operating Manual

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Operating Manual for

STADTROLLER

BERLIN

SR59

Edition 1960

VEB INDUSTRIEWERKE LUDWIGSFELDE

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Page 1 Operating Manual for STADTROLLER BERLIN SR59 Edition 1960 VEB INDUSTRIEWERKE LUDWIGSFELDE...
Page 2 Scooterstation offers full parts support for the SR59 Berlin scooter within the US. If you need parts you can contact us at: (503)-231-2768 or e-mail us at sales@scooterstation.com This operating manual was was written by a collective of Authors of the VEB Industriewerke Ludwigsfelde.
Page 3 VEB Industriewerke Ludwigsfelde This manual was translated into english by Stephan Henkel and is property of Scooterstation Inc., OR. U.S.A. Copying or reproduction of this manual is prohibited without the written consent of Scooterstation Inc.,USA.
Page 4: Table Of Contents
Table of contents 1. Technical data ..................... 1.01 Engine......................1.02 Transmission and drivetrain................ 1.03 Brakes......................1.04 Wheels......................1.05 Suspension....................1.06 Steering....................... 1.07 Electrical system..................1.08 Frame......................1.09 Body........................................1.10 Equipment 1.11 Dimensions & weight..................1.12 amounts of fillings..................2. Description......................Engine......................
Page 5 2.18 Carburetor and airfilter..............2.181 Maintenance of carburetor............ 2.182 Cleansing the airfilter............Power Train....................2.21 Primary Transmission and clutch............2.211 Adjusting the clutch.............. 2.22 Gearbox.................... 2.23 Rear powertransmission..............2.231 Chain maintenance.............. Chassis....................... 2.31 Frame....................2.32 Front wheel balance beam fork............2.321 Disassembling the balance beam fork........
Page 6 ..............3.24 Start and shifting gears 3.25 Shifting down gears on a slope............3.26 Slowing down / using your brakes............. 3.27 Stopping................... 3.28 Mothballing the bike for storage............4. Checkup- and maintenance work................General Information..................What do do ?....................4.21 Daily....................4.211 Before leaving the driveway..........
Page 7 Piston and cylinder, installation of............... Ignition timing, adjustment of..............Wheelbearing, exchange of................. Parts support and technical service..............
Page 8 Illustration 1: Berlin SR59 as viewed from the left Illustration 2: Berlin SR59 as viewed from the right...
Page 9: Technical Data
Technical data 1.01 Engine Mode of operation Two-stroke Process Loop scavenging Piston stroke 58mm Cylinder bore 56mm No. Of cylinders and Orientation 1 cylinder, standing, leaning 15º forward Piston displacement 143ccm Compression ratio 7.75:1:8.1 Room for compression 20,4ccm Continous output at 4000rpm 6.5hp Maximum output at 5100rpm 7.5hp...
Page 10: Brakes
1.02 Transmission and power transmission Clutch Multiple disc clutch in oilbath, adjustable at motor and handlebar Coating Frictionlambals „Original Cosid“ Number of compression springs Transmission Docked to engine, hand controlled Number of gears Idle motion display electronic pilot lamp on lefthandside of controlpanel Gearshift by footswitch and circuit breaker Gears...
Page 11: Wheels
1.04 Wheels Type Full disc wheels, light alloy Axles Front wheel Normal axle Rear wheel Knockout spindle Rims Drop base rims 2.50 C x 12 Tires Dimensions 3.50-12 Type Block profile Air Pressure Front 1.2atü (17.64psi) single driver Rear 1.5atü (22.05psi) single driver Front 1.4atü...
Page 12: Frame
1.08 Frame Type Central frame Seams Electrical and autogenic welding seams Stand Sidestand on left side of floorboard 1.09 Body Front Fender, Legshield, headlight with casing, instrument panel Floor and Rear Floorboard made from GA1-alloy, Rear hood with removable toolbox and tippable seats, that can be locked Number of seats 1.10...
Page 13 1.12 Filling amounts Fuel tank 12 liters ( 3.2 US gallons) Reserve in fuel tank 1.5 liters (1.6 US liquid quarts Transmission oil 0.4 – 0.45 liters (0.84-0.95 US liquid pints) Radius with one tank filling appx. 350Km (219miles)
Page 14: Description
Description Engine 2.11 Mode of operation The aircooled supercharged single cylinder two-stroke engine of the SR59 Cityscooter operates as a loop-scavenging-triple-port-Engine. This engine is an advanced version of the reliable and successful 125cc two-stroke motor of the MZ-125-2 Motorbike. The following section describes the mode of operation of the RM150 engine: As the piston moves upward (from bottom dead center (BDC) to top dead center(TDC)), a vacuum is created beneath the piston in the enclosed volume of the crankcase.
Page 15 Image 4. Power curve chart...
Page 16 Image 5. Gas consumption curve In the crankcase the pressure is below atmospheric producing a vacuum and a fresh charge of unburned mixture gasses is flowing through the intake into the crankcase. The unburned mixture gasses are compressed and just before the piston reaches TDC, the ignition system discharges a spark causing the gasses to ignite and start the process all over again.
Page 17: Crankshaft
Image 7. Motor viewed from right side 2.12 Crankshaft The crank is made from several metal parts, that were manufactured hydraullically under several tons of pressure. These parts consist of the two strokediscs, the two crank pivots and the strokepivot on which the connecting rod is installed on a doublerowed rollerbearing. A polished seperator disc seperates the two rows of rollers and thus keeps an ideal tracking and also insures sufficient lubrication even at high revolutions.
Page 18: Cylinder And Cylinderhead
Image 9. Crankcase section (1)Ratchet (2)Bushing for countershaft The main transmission of power including the clutch can be found in the left area while the alternator and the clutch access are installed in right side, well protected from dirt. Image 10. Lightmetal lid, right side Cylinder and Cylinderhead 2.14 The cylinder is made of special grey cast iron and is covered with large scaled cooling fins.
Page 19 Where the cylinder and the crankcaes meet, the crankcase is also equipped with some cooling fins, to harmonize the optical impression of the engine. Precisely carved, you will find the previously decribed (sect. 2.11, mode of operation) transfer ports in the cylinder. The two port openings located on the sides at the foot of the cylinder are corresponding with the adjacent ports in the crankcase.
Page 20: Piston And Piston Rod
2.15 Piston and piston bolt The purpose of the silicon bearing cast lightmetall alloy piston is to pick up the pressure from the burnig fuel. The oscillation of the piston caused by the work cycles is transformed into the necessary rotational movement by the crank. The sealing of the piston toward the cylinder walls is achieved by the presence of two 2,5mm wide piston rings which are secured against rotating by safety lock pins, to protect them from getting into the transfer ports, which could otherwise do harm to the engine.
Page 21: Changing The Drivebelt
2.162 Changing the drivebelt a) Removal of engine housing b) Removal of alloy lid on the left half of the enginecase underneath the blower by unscrewing the two upper and loosening the lower cylinderscrew. c) Remove lower drivebelt disc (right-hand-thread) using a 19mm socket and remove disc. Image 15.
Page 22: Electrical System
2.17 Electrical System The electrical system consists of the following: alternator 6V, 60W Led-battery 6V, 8Ah (K20) Ignition coil Cntroller switch Ignition and lightswitch Circuit breaker and condenser (mounted on the holding cap of the alternator) Sparkplug (in Cylinder head) Headlight (Hi beam, low beam and parking light) Charging control lamp (red, on the lefthandside of the controlpanel) Neutral gear control lamp...
Page 23: Alternator
2.171 alternator The genereator generates the electricity necessary for ignition, lights and signal horn. Also the alternator charges the battery through a controller switch. Image 17. alternator The battery functions as a direct current shunt link alternator. The alternator is made from two main parts.
Page 24: Electrical Tuneup (Every 6000 Miles)
2.171.1 Monitoring the electrical system During regular operation the electrical system doesn´t need any extra attention. However it is necessary to have the electrical system inspected and serviced by special personnell (IKA dealers workshop) every 6.000 miles. Merely the breaker points should be inspected for abrasion every 1.000 miles.
Page 25: Battery
replaced. Grind in a new carbon should be done by a professional mechanic. Letting the carbons wear out too much, will braze out the coil connectors in the commutator. The generotr´s correct power emission will be tested using high precision equipment. Also, the condition of the circuit breaker (spring tension, lever bedding, breaker cam) will be inspected.
Page 26 is usually not necessary to recharge the battery at an external battery charger. It is however, necessary to recheck the battery´s acid level every two months (or every 1200 miles) and, if necessary refill the evaporated battery fluid with distilled water untill the plates in each cell are sunk about a half an inch under fluid level.
Page 27: Voltage Regulator
A purposeful and yet shapely developed cap contains the lamps for brake light, taillight and licenseplate light and is located at the rear end of the hood. 2.173.1 Signal horn failure a) Defective horn b) Broken contact (bad wire) c) Defective signal switch d) Battery empty 2.174 Voltage regulator...
Page 28: Ignition
2.175 Ignition The ignition consists of the ignition coil, which is connected to the flywheel housing, the ignition line, the spark plug and the circuit breaker with parallel switched condensor that are mounted on the geneartor´s holding cap. The breaker cam wich rotates along with the crank causes the breaker lever, that carries one of the circuit breaker contacts, to be raised against the pressure of the breaker spring and thus causes the primary current to be interrupted while the contacts are seperated.
Page 29 Image 23. Carburetor (1)Cable adjusting screw (2)Hexagonical screw (3)Striker pin for idle adjustment (4)Slidegate housing cap (5)Idle regulation screw (6)Hexagonical screw for retainer (7)Idle jet (8)Screw plug (9)Hexagonical screw filter retainer immaculate combustion, is getting distributed to the cylinder. The main jet also sets the maximum tolerance for the amount of fuel, while the needle jet controls the fuel output up to appx.
Page 30: Maintenance Of Carburetor
2.181 maintenance of the carburetor The main jet can be cleaned without having to take the carburetor apart. All that needs to be removed for that purpose is the screw plug of the mixing chamber. The main jet sits in the needle jet.
Page 31 Illustration 25, Explosion diagram of carburetor...
Page 32 Parts list for carburetor type 24KN1-1 Carburetor housing, (21) Idle jet pre assembled (22) Seal for idle jet Thrust piece (23) Main jet Seal for thrust piece (24) Upper Gasket for Needle jet floater housing Slidegate housing cap (25) Floater housing Cable adjustment screw (26) Floater...
Page 33: Cleansing The Airfilter
screw is screwed out by about 2½ rotations. After adjusting, it´s position is to be secured with the counter nut. The idle speed is adjusted through a stop screw which can be found on the housing cap. This screw is also secured with a counter nut. Screwing the stop screw in, reduces the intake opening that is left open, when the throttle is fully closed reulting in reduced idle speed.
Page 34: Power Train
Power train 2.21 Primary transmission and clutch The power train between engine and transmission is achieved by a chain which sitting on the chain pinion on the lefthand side of the crank extension on one side and on the sprocket wheel of the clutch barrel on the other.
Page 35: Adjusting The Clutch
2.211 Adjusting the clutch There always has to be a „dead gear“ of appx. 2-3mm near the clutch lever bowden cable seat. If there happens to be too much play, the clutch can not be released entirely. If, on the other hand, there is too little play, the clutch springs will be too loose, causing in the clutch to slip and in extreme cases even to burn.
Page 36: Gearbox
2.22 Gearbox The for pairs of cogwheels that are sitting on the main gearshaft (clutch shaft) and the layshaftare constantly engaged. All the gears as well as neutral (inbetween the 1 and 2 gear) Image 29. transmission oil filling screw (1) Level check screw (2) are engaged through use of the hand controlled clutch.
Page 37: Chain Maintenance
2.23 Rear power train The power train from the transmission to the rear wheel is achieved by a roller chain which is installed on the chain pinion gear at the gear box on one side and on the rear wheel´s sprocket wheel on the other.
Page 38 Image 31. Installing the master link housing. After having removed the engine cover and the master link, it is advisable to leave the rubber housing on the chain to not complicate the refitting process. Rather, the entire chainbox should be removed and disassembled from the rear wheel hub, so that the chain can be refitted nicely and fed through the rubber housing.
Page 39: Chassis
CAUTION: To prevent disalignment, the amount of threading must be equal on both nuts. Subsequently the chain adjusters are arrested by the front nuts and the axle nut and rod are also to be tightened again. It is extremely important to ensure exact wheel alignment, because not only does it assure good road holding and thus the driver´s safety, but also it determines the life span of the chain, wheel bearings and tires.
Page 40: Disassembling The Balance Beam Fork
that are secured against contortion, are the link between handlebar and steering column. The handlebar can be put into tha most convenient position for the driver, by simply loosening the upper clamping bolt. 2.321 Disassembling the balance beam fork 1. Remove speedometer spring and brake cable. 2.
Page 41: Adjusting The Steering Column Bearings
2.322 Adjusting the Steering column bearings Bend rubber sleeve (4) back and open counter nuts (1 & 3) with hook spanner. Tighten lower nut (1) until the bearing has just enough room to maneuver without play. Test: The fork should fall from it´s center position to the left and the right as far as it will go without any interference.
Page 42: Disassembling The Rear Wheel Suspension
2.331 Disassembling the rear wheel suspension Remove rear wheel (see section 2.351) Remove rear hub with chain drive (see section 2.341) Remove axle retainer by unscrewing the rear swinging bolts The upper swinging arms can be removed by removing the long hexagonal at the rubber bushing.
Page 43: Brakes
2.34 Brakes Mechanical brakes are installed in the front and the rear wheels. Image 38. Front brake (1) Adjusting screw (4) Lubrication nipple (2) Counter nut (5) Brake lever (3) Break anchor cam (6) Brake cable nipple The front wheel can be adjusted, at the cable jacket on the handlebar or at the hub. The rear wheel brake is adjusted by turning a hexagonal nut, that is sitting on the thread at the end of the brake cable.
Page 44: Brake Maintenance
2.341 Brake maintenance There are adjustment devices installed at the end of the rear brake cable and at the thrust bearing Image 39. Adjusting the rear brake of the jacket of the front brake for the necessary adjustments that need to be done due to the wear of the brake shoes.
Page 45: Axles And Wheels
Do not over adjust. Make sure that the wheels turn without the brakes grinding after adjustment. Brake drums should be opened every 3000 miles, to clean the inner parts of the brakes. The armature plate with brake pads and straddle mechanism can be pulled out after first having removed the front wheel.
Page 46: Flat Tire
2.351 Flat tire Removing the front wheel: Tilt the scooter sideways and let it rest on the edge of the florboard. Remove speedo cable and brake cable from the armature plate Loosen axle nuts Remove wheel The wheel will be ready for tire installation, after having removed the five wheel nuts.
Page 47 Dismantling a tire Remove valve from tire and let all the air out Remove nut from valve seat Lay wheel down flat on the ground Using both feet, step on the tire on the opposite side of the valve, until the tire is pushed into the drop base of the rim.
Page 48: Tank
Fill the rim with a little airand place it into the tire so that the valve seat can be pushed through the valve opening in the rim. Be careful to not twist the tube and make sure that the valve sits straight. Loosely fit the valve nut onto the valve, so that it won´t slip back into the rim throughout the mounting process.
Page 49: Cleansing The Fuelfilter
the fuel tap´s reserve setting. The fuel tank is installed on the hood mount and affixed with a tensioning belt. The fuel tap is installed on the left hand under side of the tank. 2.361 Cleansing the fuel filter The fuel filter is part of the fuel tap. The fuel filter filters dirt particles before they can get into the floater housing of the carburetor.
Page 50: Driver And Buddyseat
2.37 Driver and buddyseat The coil spring cage based driver- and buddyseat are mounted on a mutual base frame and are made from foam rubber. Image 46. Driver- and buddyseat Image 47. Opened base frame The base frame is opened sideways to refuel the scooter. The opened base frame also enables access to the tool kit, which after being removed, can be used to work on the spark plug that can be accessed easily by opneing the little round door in the hood.
Page 51: Instrumentpanel And Theft Protection
2.38 Instrumentpanel and theft protection The necessary pilot lights for the scooter as well as the electronic switches are mounted evidently on the instrument panel. The following lights, switches and instruments are to be found on the instrument panel: left hand side: red pilot light and green neutral indicator light. Right hand side: orange supercharger pilot light and a blind light which is mounted for the purpose of symmetry.
Page 52: Tools
2.39 Tools For the necessary maintenance work and little repairs incase of breakdown, which can possibly surprise any motorcyclist once, a complete set of emergency tools is provided in the toolbox under the base frame of the seats. This tool kit consists of the following: Image 49.
Page 53: Operating Instructions
Operating instructions Orientation and intention of the control elements Image 50. Orientation of the control elements (1) Neutral gear pilot light, (2) Charging status light, (3) Clutch lever, (4) low beam switch and signal switch, (5) Ignition and light switch, (6) Theft protection, (7) foot gear switch , (8) Sidestand, (9) Security lock, (10) Kickstart, (11) hood mount (12) foot brake lever (13) Supercharger pilot light (14) Throttle (15) Hand controlled brake (16) Choke lever (17) Blind pilot light...
Page 54: Throttle
3.101 Choke lever The choke lever is mounted on the handlebar and controls the air slide gate of the carburetor. If the lever is pushed forward (in driving direction), it closes the carburetor´s intake manifold partially resulting in a thicker ratio necessary for cold start. After startup, the lever should slowly be pulled back to avoid unwanted oversaturation of the ratio.
Page 55: Ignition And Lightswitch
3.103 Ignition and lightswitch The combined ignition and lightswitch unit is found on the left hand side of the instrument panel like already described in section 2.38. The ignition key can be pulled out in positions 0 and 1. Relevance of the key settings: Position 0: Ignition and lights switched off –...
Page 56: Dipswitch
3.104 Dipswitch (Low beam switch) Th dipswitch on the left hand side of the handlebar is mounted for convenient access by the left hand´s thumb. It can be switched up and down to toggle between hi and low beam. 3.105 Clutch lever The clutch lever is also found on the left hand side of the handlebar.
Page 57 Image 55. Play of clutch lever 3.106 Kickstart The prominent kickstart on the left hand side of the hood is provided for kickstarting the engine. If the kickstart can´t be kicked down because the mechanism is locked in sprocket on sprocket, the scooter needs to first be pushed back and forth a little to switch it back into neutral gear.
Page 58: Foot Gear Switch
3.107 Foot gear switch The foot gear switch is located on the left hand side of the floor board. Actuating the gear switch will cause the switch shaft, which is beared within sleeve shaft of the kickstart to change Image 56. Actuation of foot gear switch the different gear ratios within the gear box.
Page 59: Rear Brake Foot Lever
3.108 Rear brake foot lever The rear brake foot lever is found on the right hand side of the floor board. Pushing it down will result in actuating the rear brake. The rear brake can be adjusted by using the adjustment screw at the rear end of the break cable.
Page 60: Sidestand
3.110 Sidestand The sidestand is found on the left hand side of the floor panel. It is used to park the vehicle. By slightly tilting the scooter into the opposite direction, the sidestand can be accessed easily. CAUTION: Before sitting on the scooter the sidestand has to be retracted. Otherwise the floorboard may be damaged.
Page 61: Before Your First Ride
Proper operation 3.21 Before your first ride The following things need to be done, before starting the engine for the first time: Check battery for correct charge. This can be done by turning the headlight on and honking the horn. (The first time charge of the battery should be done by an IFA customer care center.) Fill the fuel tank with fuel (ratio of 5% oil).
Page 62: Starting Up
the appropriate moment on the way up to 4 as well as down again. Don´t accelerate to the highest possible speed in each gear after the 900miles of running in are up. Only after 1800 miles are all parts ready to be strained without running into the danger of being damaged. 3.23 Starting up To start the cold angine, folle these steps:...
Page 63: Stopping
A soon as a speed of 18mph is reached, follow step 4. to switch into third gear. Repeat step 4. for switching into 4 gear as soon as a speed of about 37.5mph is reached. 3.25 Shifting down on a slope If the motor doesn´t seem to make an ascending slope with the current gear engaged and the speed goes under the recommended amount, it is necessary to downshift accordingly.
Page 64: Mothballing The Bike For Storage
Bring the scooter to a full stop by applying the brakes Incase the scooter should be parked: Turn off ignition Close fuel tap. 3.28 Mothballing the bike for storage If the scooter should be mothballed during winter or for any other reason, the following things apply: Jack up the scooter by placing logs under traverses and underbody (three point storage) and clean scooter thoroughly.
Page 65: During Stays In Transit
Check for sufficient play on the clutch (two to three millimeters). (Also see image 55). Check air pressure. (See section 3.21) Check brakes 4.212 During stays in transit During short stops after a longer drive, it is advisable to check the tire temparature. Unusually warm tires leave to conclude, that the air pressure is too low (great thermal stress caused by excessive friction).
Page 66 Lube chart Lube point No. Of Lubricant Lube points Front fork (under fender) Grease Brake lever, front Grease Speedometer Grease Spring retainer Grease Rocker bolt Grease Foot brake lever Grease Clutch spring Grease Rear wheel rocker arm Grease Foot brake cable Motoroil Chainlubrication Motoroil...
Page 68: Troubleshooting
4.24 Maintenance of spark plug The state of the spark plug changes during operation as a consequence to the high mechanical, chemical and thermal strain it is exposed to – it ages. Regular maintenance and check up´s of the spark plug´s aging process is necessary in order to keep the engine reliable and safe. For the beginning, it is important that the inner parts of the spark plug are clean.
Page 69 4.241 What does the spark plug´s face tell us ? If the right sparkplug´s inner parts (the „face“) are black (meaning oily or grimy) one of the following problems could be responsible: Distance of spark plug´s electrodes is too small carburetor ratio is too thick Mechanical defects of the carburetor that lead to an over enriched ratio like a worn out floater needle or a defective floater.
Page 70 4.25 Cleansing the exhaust The exhaust fumes are conveyed through the exhaust into the open. The exhaust collects all kinds of residue that, depending on operation mode and used fuels, need to be cleaned out after about 3000 miles. If ignored, the residues result in lacking performance and higher fuel consuption. The exhaust of the SR59 Berlin is demountable.
Page 71: Engine Won´t Start
Troubleshooting 4.31 Engine won´t start No fuel overflowing while pushing down the dabber. This can have the following reasons: No fuel in the tank Fuel tap closed or not on reserve. Dirty fuel filter. Airhole in fuel tank lid clogged (The air hole is not visible from the outside). Clogged fuel line.
Page 72: Engine Doesn´t Run Smooth
There is spark throughout the advised inspection but the engine won´t start: Electrode distance too large or too small, due to the different atmospheric pressures within the combustion chamber. (More precise inspection of the sparkplug in a dry well). Sparkplug oily or broken. Engine flooded due to excessive dabber use.
Page 73: Engine Stalls Abruptly
Carburetor „beat´s back“ Obstructed fuel flow or dirty fuel filter, clogged fuel lines or dirty carburetor bores. Slanting carburetor. Loose carburetor. Carburetor´s tightening screws loose. Defective engine gasket. Missing air filter Wrong carburetor setting, jet needle too low or fell into needle jet entirely due to broken clamping yoke.
Page 74: Excessive Fuel Consumption
4.36 Excessive fuel consumption As with all vehicles, the specifications on the fuel consumption are standard values. Of course the consumption changes when the engine and/or other parts of the vehicle are faulty. A higher fuel consumption can also have one of the following reasons: higher top speeds, permanent maximum load, off center load, bad roads and rough climate.
Page 75: Adjusting The Headlight
4.38 Adjusting the headlight The following procedure should be attended in order to adjust the headlight: Position the scooter perpendicular to and about five yards away from a white wall. Image 63. Headlight bezel Image 64. Adjustment of headlight Have one or two people sit on the scooter. Loosen bezel screws and adjust headlight, where the boarderline between the bright bottom and dark upper area should be at least two inches under the center of the headlight.
Page 76: Repair Instructions
Repair instructions Egine removal and instalation Remove hood. Loosen exhaust´s bolt and nut (located at right traverse) located at the bracket. The tank can be removed, after loosening the carburetor´s tension belt and fuel line as well as the dabber bracket. Remove carburetor´s slidegate cap and pull cables and slidegate out of carburetor.
Page 77: Removing The Piston
Removal of cylinder Remove fuel tank. Loosen exhaust´s bolt and nut (located at right traverse) located at the bracket and remove exhaust. Remove cylinder head as described in 5.2. Loosen clamping screw at the carburetor connector and remove carburetor from intake socket.
Page 78 Installing piston and cylinder Lubricate rod head bushing. Warm up piston to about 90ºFon a cooker. Put the warm piston over the rod head in such a way, that the imprinted arrow in the piston is pointing forward. Quickly push the cold piston pin through piston and connecting rod. Reinstall circlips.
Page 79: Adjusting The Ignition
Put on circlips and washers and screw nuts on. Caution: tighten nuts cross-over !! Install carburetor, fuel lines, exhaust and ignition cable. Adjusting the ignition Open breaker cap, incase the right side housing cover has not been removeed. Cleanse breaker points and set the contact distance to 0.4mm at the highest possible position of the cam (Loosen screw C (image 18) for this purpose and adjust angle with a screwdriver.
Page 80 distance sleeve sits inbetween these two bearings to prevent them from being pulled together when tightening the axle. When the distance sleeve doesn´t have the approved length anymore, the rings are pressed against the balls of the bearing, causing sluggish behaviour of the bearings which leads to their quick destruction.