MOTO GUZZI 850 Le Mans III User manual

1:1 5 c::J ( Le M~ns)
OWNER'S MANUAL

Cod. 14900051 - 4·77 - 1000 K - PrInbId In bey -Ma-iMI-AIme I8GI

Dear rider,
First at aI/ we wish to thank you tor choosing this motorcycle 01 our
production.
By lollowlng the instructions outlined In this manual you will ensure
your bike a long and troubletree life.
Before riding, please read thoroughly this manual
In order to know your
motorcycle's features and how to operate it safely.
All major checking and overhaul jobs are best carried out by our dea-
lers
who have the necessary facilities to quickly and competently repair
your Mota
Guzzi.
Repals or adjustments by any other than a Guzzi dealer during the war-
ranty period could invalidate the warranty right.

INDEX
4 Main features
10
Controls and accessorIes
12
Identification data
13
Instruments and controls
1.
Riding Instr.ctlons
21
Running In
22 Maintenance
29 Removal of wheels
32 Lubrication and
maintenance chart
34 LubricatIons
38 Carburetlon
41
Valve gearing
42 Ignition
46 Electrical equipment
4.
Wiring Diagram

4 MAIN FEATURES
Engine
Valve gear
CarbureUon
Lubrl~Uon
Generator
Ignition
2-cylinder
~stroke
Cylinder disposition
Bore
Stroke
Displacement
Compression ratio
Output
-v. 90"
mm 83
mm 78
cc 844
10,2
HP 80 SAE at 7.300 r.p. m.
O.H.V. push rod operated.
2 Dell'Orto carburetlors type
PHF 36 B (D) (right),
PHF 36 B (S) (left).
Pressure, by gear pump.
Normal lubrication pressure 3,8 or 4,2 Kp/cm
2
(controlled by relief-valve).
Electrically controlled oil pressure gauge.
Wire gauze and cartridge oil filters.
Front
(14 V- 20 A) on the crankshaft.
By battery, with double contact breaker and auto-
matic advance.

Transmission
Clutch
Primary drive
a.ar boll
Ignition data:
Initial advance (fixed) 8"
Automatic advance 26"
Full advance 34·
2 Ignition coils, on the left side of frame
Electric starter with electromagnetic ratchet con-
trol. Ring gear bolted _
on flywheel.
Starter button, (STARn right on the handlebar.
Dry type, multlpilltes, flywheel driven. Lever con-
trolled from handlebar (left).
via the gearbox.
Ratio: 1 :
1,235 (Z =17/21).
Five speeds, frontal engagement, constant mesh
gears. Cush drive Incorporated.
Pedal controlled from lett side of the motorcycle
Ratio:
low gear 1 : 2
(Z =14/28)
2nd gear 1 : 1,388 (Z =18/25)
3rd gear 1 :
1,047 (Z =21/22)
4th. gear 1 : 0, 869 (Z =23/20)
top gear 1 :
0,750 (Z =28/21)
5

6 S.cond.ry
drlv.
Cycle
Fram.
Su..,....lon
WhHI.
TI ....
cardan shaft (bevel gear set).
Ratio: 1 : 4, 71. (Z =7/33).
Overall gear ratio (engine/wheel):
low gear 1 : 11 . 643
2nd gear 1 8,080
3rd. gear 1 6,095
4th gear 1 5,059
top gear 1 . , 366
Duplex cradle, tubul ar structure.
Telescopic front fork incorporating sealed hy-
draulic dampers.
Rear swinging fork with externally adjustable
springs.
In light alloy, with ri ma , WM 3/2,15-8 front and
rear.
Front
3,50 H - 18" or 100/90 H - 18"
Rear . ,00 H - 18" or 110/90 H - 18"
or 4,10 V - 18"

B,ak ..
DlmensloM and weights
Front:
Hydraulic disc brake, twin braking cylinder cali-
per. Hand lever controlled trom the handlebar
(R/H). Hydraulic transmission, free from rear
braking system.
Disc
Braking cylinder
Master cylinder
Re.r:
121 300 mm
121 38 mm
121 12,7 mm
Hydraulic disc brake, twin braking cylinder ca-
liper. Pedal lever controlled trom the motorcycle
(A/H).
Disc 121 242 mm
Braking cylinder 121 38 mm
Master cylinder 121 15,875 mm
Hydraulic t,anslmlulon:
The rear brake Is bound by a hydraulic transmis-
sion to a twin front brake featured and dimen-
sioned like the hand controlled front brake.
Wheelbase
Max. width
Max : length
m 1.470
m 2,190
m 0.720
7

8
Performances
Max. height m 1, 030
Min..ground clearance m 0, 150
Dry Weight kg 198
Maximum speed,
solo riding:
210 km/h.
Fuel consumption: It 8x 100 km.