MOTO GUZZI 850 Le Mans III Owner's Manual

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Page 1 This Manual supplied and scanned by Christian D Smith Formatted and edited by Theo Bekkers...
Page 2 Introduce any modification It may deem necessary for better performance or for constructive or commercial reasons without prior notice. SEIMM MOTO GUZZI S.p.A. - Technical Publications - Code 2890 OD 51 Printed in Italy - 'Tecnopress/Bergamc - 1500 - 7-81...
Page 4 All major checking and overhaul jobs are best carried out by our dealers who have the necessary facilities to quickly and competently repair your Moto Guzzi. Repairs or adjustments by any other than a Guzzi dealer during the warranty period could...
Page 5 HINTS ON THE PROPER USE OF THIS MOTORCYCLE Due to its exceptionally high feature, air filter box of the carburetors this motorcycle can be considered same. When travelling at low speed as in the racing machine class and or in other words at low revs, it is as such has to be ridden in a necessary for the throttle grip to be sportsmanlike way.
Page 6: Table Of Contents
Page four is a Blank Page INDEX 6 Main features 11 Identification data 12 Controls and accessories 14 Instruments and controls 21 Riding Instructions 23 Running in 24 Maintenance and adjustments 31 Removal of wheels 34 Service schedule 36 Lubrications 40 Carburation 43 Valve gearing...
Page 7: Main Features
44 Ignition «V» Twin cylinder - 4-stroke Engine 47 Electrical 90° Cylinder disposition equipment 83 mm Bore 78 mm Stroke 844.05 cc Displacement MAIN FEATURES Compression ratio 7.6 kgm at 6200 Max torque Valve gearing O.H.V., push rod operated N. 2 carburetors –Dell-Orto ; type Carburation PHF 36 B (D) (right), PHF 36 B(S) .(Ieft).
Page 8 Coil-battery ignition with double contact Ignition breaker' and automatic advance. Ignition data: - ignition advance (fixed :8° - automatic advance 26° - full advance (f. + a.) '34' Contact breaker points gap: 0.37 -0.43 mm (0.014"-0.016") Spark plugs: Bosch W 5 D Lodge 2 HLNY Plug points gap: 0.6 mm (.020").
Page 9 4th gear = 1 to 5.059 High sear = 1 to 4.366 Frame Duplex cradle, tubular structure. Front: telescopic fork «MOTO GUZZI make» Suspension (patented) with oil pneumatic shock absorbers. Rear: swinging fork and rear dampers with adjustable external springs concentric to the oil pneumatic shock absorbers.
Page 10 Tires Front: 100/90V18 Rear: 110/90V18 Front: disc type with caliper having 4 Brakes cylinder controlled by hand lever on right hand side of the motorcycle. Hydraulic transmission independent from the rear brake. Disc size: 300 mm (11.8"), braking cylinder 38 mm (1.49"), master cylinder 12.7 mm (.5").
Page 11 Top speed, solo riding 230 km/h (114 mph). Performances Fuel consumption: 5.7 I x-100 km Fuel and oil capacities Group or part Quantity Recommendation Fuel tank 251 (6.15 US gls) Supergrade petrol (98/100 NO-RM) Reserve 3 I (3'/' quarts) Oil sump 3 I (3 /.
Page 12: Identification Data
SEIMM MOTO GUZZI directions. Tires, accessories, or parts not manufactured in the <c Seimm Moto Guzzi I) factories are exclu- ded from this guarantee. Each new motorcycle is supplied with a «voucher book» which has to be kept carefully with all other...
Page 13: Controls And Accessories
CONTROLS AND ACCESSORIES (fig. 3) 14 Voltmeter. 1 Front turn light signals. 2 Right front brake control lever. 15 Rev-counter. 3 Throttle control grip. 16 Lock set, fuel cap 4 Speedometer. opening. 5 Ignition key. 17 Gearshift pedal. 6 Left front brake and rear brake pedal. 7 Footrest.
Page 15: Instruments And Controls
14 INSTRUMENTS AND CONTROLS Instrument Panel machine ready to be started. All 1 Voltmeter. circuits «ON ». Key not removable. <<B>> In line with mark -O» (turned 2 Rev-counter. clockwise): machine at standstill. 3 Speedometer, km With switch" A" (fig. 5) in "PARK" or miles.
Page 16 Warning light (blue) "c" (flash) Flashing light indicating high beam on. 11 control Switch <<E>> Warning light (green) <<R>> Right turn indicating parking lights on. <<L>> Left turn 12 Warning light (green), right Engine starting and stopping button (fig. 6) turn signal.
Page 17 16 - «A" Start position. Clutch control lever - "B" Riding position. It is on the left hand side of the handlebar and it should be pulled Throttle twist grip control (<<G>>" only for starting and gearshifting. in fig. 6) It is located on the right hand side of the handlebar: turning Control lever for R/H front brake it inwards opens the gas and vice...
Page 18 Left front and rear brake Positions: control pedal (.F. in fig. 18) - low gear, lever end towards the ground It is centrally located on the R/H side - 2nd, 3rd, 4th and high gear lever to of the vehicle and it is link upward connected to the master cylinder.
Page 19 18 Fuel taps (fig. g) Fuse n. 1 Starter relay - Rear stop switch. Are fitted under the tank, rear side. Fuse n. 2 The fuel tap has 3 positions: Open, lever arrow upwards . Flashing light - Horn RES Reserve, lever arrow downwards. Fuse n.
Page 20 Locking Fuse n. 5 - Turn the handiebar fully to the right. Turn signal lights and their warning - Insert the key in the lock set, turn it anti 'clock- lights. wise, push it right in, release it and slip it out. Fuse n.
Page 21 to always use the centre stand wax normally used to clean plastic or Glass which guarantees better stability materials can be utilized. However, the following precautions should be ta- Steering damper R/Hs ken: It is fitted on the R/H side of the •...
Page 22: Riding Instructions
If the starter Lever is left starting position A fig. 28 whilst riding there would be irregular RIDING INSTRUCTIONS carburation and increased fuel consumption Controls before starling and in the worst cases the cylinders might seize because of too much petrol going into Ensure that: them.
Page 23 Parking When shifting down to lower gears, .operate gradually the brakes and the throttle grip to avoid racing the engine When parking night when the clutch lever is released insufficiently lighted roads, switch on the parking lights by turning the Stopping the motorcycle key (fig.
Page 24: Running In
RUNNING IN During the running in period follow 3 Before stopping reduce the speed strictly these recommendations: gradually to prevent the various engine 1 Before starting allow the engine to groups from undergoing abrupt changes of warm up at idling speed for a more or temperature.
Page 25: Maintenance And Adjustments
MAINTENANCE AND ADJUSTMENTS Adjusting the clutch control lever Adjusting the right front brake (fig 14) control lever (fig. 15) It the free play at the handlebar is Proceed as follows: more or less than 3'74 mm (.157"), act • insert feeler gauge “A” between the on adjuster “A”...
Page 26 Checking wear of the brake pads Every 5000 km (3000 miles). check thickness of the brake pads. - New pad 9 mm (.3543"). - Wear limit 6 mm (.2362"). If the pad is worn down to more than this limit, it is necessary to change the pads. After this operation has been carried out, there is no need to drain the air from the braking circuits: it is sufficient to operate the...
Page 27 3 Every t 5.000 km (9000 miles) or at least the aid of a suitable gauge and the reading once a' should in no case exceed 0.2 mm (.0079"). year, change the braking fluid. If this «floating» is higher, it is well to ensure For good operation of the circuits, it is that the discs are properly assembled on the necessary for the ducts to be always full...
Page 28 • Bleed by acting on caliper “F” as follows: 1 Remove rubber covers and fit flexible pipe “G” on drain plugs “E “ with the other end of the pipe plunged in a transparent container “H” partially filled up with liquid of the same type.
Page 29 in the reservoirs-master cylinders», except plug «E». remove plastic duct “G", and point «1» and in “right front brake circuit”, re-fit rubber cover on the drain plug. except points 3-4 which are replaced by: If the air bleeding operation has been carried out correctly, a direct and efficient Level working of the fluid will be perceived...
Page 30 Oil pneumatic shock absorbers Adjusting the rear suspension with oil pneumatic dampers (fig. 19) The operating load pressures of these shock absorbers are the following: The external springs of the rear front: 3 kq/sqcm ± 1 dampers can be adjusted to five rear: 4 kg/sqcm ±...
Page 31 30 "I Adjusting steering head nut «8». Screw in or out adjuster screw «C» to take up play This done tighten nut “B” and steering head fixing bolt ,”A” If is well for this operation to be carried out by one of our dealers.
Page 32: Removal Of Wheels
REMOVAL OF WHEELS Set up the bike on the center stand. Undo nut «A» with washer «B •• on the Front wheel (fig. 21) spindle rear drive box side. Loosen spindle bolt "0,, on fork arm. To remove the front wheel, proceed as Withdraw spindle “E”...
Page 33 Lean the vehicle to the right re-assemble, reverse dismantling just sufficiently to allow the sequence, remembering to insert the plate wheel to be withdrawn from complete with caliper on the stop lug on the left the rear fork arm and the arm of the swing fork.
Page 34 An incorrect tire pressure may also affect the It is also very important for the tire bead to be vehicle stability and cause rapid wear of the properly entered into the center rim groove. tire. Recommended pressures are: Tires that have an arrow on their sides •...
Page 35: Service Schedule
SERVICE SCHEDULE MILEAGE 900mi. 1800 mi. 3700mi. 5600 mi. ITEMS COVERED (1500 km) (3000 km) (6000 km) (9000 km) • Engine oil • Oil filter • Wire gauze oil cartridge • Air filter filter • Ignition timing • Spark plugs •...
Page 36 11.300 mi. 13.200 mi. 15.100 mi. 17.000 mi. 18.9000 mi. 7500 mi. 9400 mi. (12.000 (15.000 (18.000 (21.000 km (24.000 km (27.000 km (30.000km) " ,...
Page 37: Lubrications
36 LUBRICATIONS Replacing the oil Engine Lubrication After the first 500-1000 km (300-600 miles) Checking the oil level and later on every 3000 km (2000 miles) or so, replace the oil in the crankcase. This Every 500 km (300 miles) check level of operation is done on a warm engine, oil in crankcase.
Page 38 Replacing the oil Replacing the oil filter cartridge and cleaning Every 10.000 (6000 miles), the wire gauze filter (fig. 24) replace the oil in the gearbox. This operation has to be done on a warm Every 15.000 km (9000 miles or 5 oil engine when the oil is more fluid chances), replace...
Page 39 To replace the oil in the front fork legs, proceed as follows: 38 Lubrication of the rear drive box • with the bike on the central stand, loosen the side (fig. 26) screw "C" locking the steering head to the fork arm; disconnect compensating pipe...
Page 40 and lock the side screw. Repeat the same operation for the other fork leg; • reconnect compensating pipe and check pressures keeping to the given values. Lubrication of the steering and rear fork bearings These operations are best carried out by our dealers.
Page 41: Carburation
40 CARBURATION Carburettors (fig. 28) This model fits two Dell'Orto carburettors type PHF 36B (D) (right) and PHF 36B (S) (left) Controls • Throttle control grip on the R/H side of the handlebar. • Easy starter lever for cold engine starts on the L/H side of crankcase.
Page 42 As per point 4 Disconnect one spark plug lead at a time and check that in both cases the engine stops after firing the same number Adjustment of carburation and Idling Speed of revolutions. If it does not, screw out screw “D”...
Page 43 Every 6000 km (3700 miles) check 42 Cleaning the fuel tank, fuel taps, fuel conditions of filters, and pipes filter, if necessary clean using Every 10.000 km (6000 miles) or in case of compressed air; it is ad' 'sable to replace it irregular fuel flow to the carburettors, it is every 9(00 km (5600 miles).
Page 44: Valve Gearing
VALVE GEARING Tappet clearance (fig. 30) After the first 500-1500 km (300-900 miles) and later on after about 3000 km (1800 miles) or so or any time valve operation is too noisy, check tappet clearance. This adjustment is done with a cold engine with the piston at TDC, at the end of the compression stroke (valves fully closed).
Page 45 44 IGNITION «F». After setting to correct distance, Checking and adjusting the double lock screws "C" and “D” contact breaker (fig. 31) Contact «B» - left cylinder Bring cam “I” to its maximum lift, loosen Maintenance screws “G” and “H” and move plate “L” operating on notch “M”...
Page 46 Checking and adjusting the Turn the flywheel in the normal sense of ignition timing "fixed advance •• rotation of the engine (anticlockwise) until the piston is at the end of its (fig. 32) compression stroke (valves fully closed). At this point mark “S” on the flywheel (TDC of left cylinder) Inspection should coincide with mark “1”...
Page 47 46 • now rotate the flywheel clockwise until started, the cylinder head thread may get mark «3» (fixed advance) coincides stripped. For all events, the plugs have to exactly with mark "1,, on the inspection be replaced every 9000 km (5600 miles) hole rim.
Page 48 ELECTRICAL EQUIPMENT The electrical equipment consists of: Battery Battery. The battery is a 12 V type with 24Ah Starter motor with electromagnetic capacity and i'1l charged directly by the ratchet control. generator. • Generator/alternator, fitted on the Access to the battery is obtained by: front end of the crankshaft.
Page 49 48 At this stage the battery is ready to be used. for longer life, it is well to check the acid intensity in each cell. In case of readings lower than 1.26 kg/I, it is necessary to give 4 Make sure the charging equipment does the battery a refreshing charge to an not give excessive or insufficient charging intensity equal to 1/5th of its capacity is...
Page 50 bulb «D», pressing on spring "E” with a rotary motion, After re-fitting, make sure no other electrical connections have been inadvertently disconnected (especially the position light cable). -.' The position light bulb holder «F» is a pressure fit Tail light (fig. 35) Undo screw "A»...
Page 51 50 Turn indicators, front and rear Bulbs (fig. 34 & 35) Headlight To remove the turn indicators cups lift - High and low beam 45/40 W them using a screw driver in the points - Parking light indicated with the arrows Taillight: In the proper hollows have been - Parking and stop, plate ill.
Page 52 WIRING DIAGRAM 52 Legend electrical wiring diagram (fig. 36) 27 Engine starting and stop button 1 Parking light, front (4 W) 28 Flashing light, turn signals, and horn switch 2 High beam bulb (45 W) 29 Horn 3 Low beam bulb (40 W) 30 Front brake switch (STOP) 4 3-way connector for headlight 31 Rear brake switch (STOP}...
Page 53 --" SEIMM MOTO GUZZI S. p. A. Mandello del Lario secreta Lecce Reglstro N. 2220...

MOTO GUZZI 850 Le Mans III Owner's Manual

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