MOTO GUZZI 850-T3 User manual

Dear rider,
First of all we wish to thank you for choosing this motorcycle of our
production.
By following the instructions outlined in this manual you will ensure
your bike a long and troublefree life.
Before riding, please
read throughly 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 Moto Guzzi.
Repais
or adjustments by other than a Guzzi dealer during the warranty
period could invalidate the warranty right.

, .
INDEX
4 Main features
10
Controls and accessories
12
Identification data
13 Instruments and controls
20 Riding Instructions
21 Running in
23 Maintenance
29 Removal
of wheels
32 Lubrication and
maintenance
31l· Lubrications
38 Carbu ration
41 Valve gearing
4~ :
Ignition
46 Electrical equipment
48 LIGHTS (Europe model)
50
Wiring Diagram (Europe model)
51
LIGHTS (U .S.A. model)
52 Wiring Diagram (U.S.A. model)

4 MAIN FEATURES
Valve gear
Carburation
Lubrication
Generator
Ignition
2-cylinder 4-stroke
Cylinder disposition
Bore
Stroke
Displacement
Compression ratio
Output
"v" 90·
mm 83
mm 78
cc 844
9,5
HP 68,5 SAE at 7.000 r.p. m.
O.H.V. push rod operated.
2 Dell'Orto carburetors type VHB 30 CD (right),
VHB 30
CS (left).
Pressure, by gear pump.
Normal lubrication pressure 3,8 -;- 4,2 kg/sqcm
(controlled by relief-valve).
Electrically controlled oil pressure gauge.
Wire gauze and
cartridge oil filters.
Front (14 V - 20 A) on the mainshaft.
By battery, with double contact breaker and auto-
atic advance.

Starting
Transmission
Clutch
Primary
drive
Gear box
Ignition data:
Initial advance (fixed) 2°
Automatic advance 31'
Full advance 33'
Contact breaker gap mm 0,37 -7- 0,43
Spark plugs:
Mare"i CW 7 L; Bosch W 225 T 2; AC - 44 XL;
Champion N 9 Y.
Plug pOints gap mm 0,6
2 ignition coils.
Electric starter
(12 V - 0,7 HP) with electromagne-
tic ratchet control. Ring gear bolted on flywheel.
Starter button, (START) right on the handlebar.
Dry type, multiplates. flywheel driven. Lever
con-
trolled from handlebar (lett).
via the gearbox.
Ratio : 1:1,
235 (Z = 17 / 21) .
Five speeds, frontal engagement, constant mesh
gears. Cush drive incorporated.
5

6
Secondary
drive
Frame
Suspension
Pedal controlled from lett side of the motorycle
Ratioes:
low gear 1 : 2 (Z = 14/28)
2nd
gear 1 : 1,388 (Z = 18/25)
2rd gear 1 : 1,047 (Z = 21/22)
4th. gear 1 : 0,869 (Z = 23/20)
top gear 1 : 0,750 (Z = 28/21)
cardan shaft (bevel
gear set).
Ratio: 1 : 4,714 (Z = 7/33).
Overall gear ratioes (engine/wheel):
low gear 1 : 11,643
2nd gear 1 8,080
3rd. gear 1 6,095
4th gear 15,059
top gear 1 4,366
Duplex cradle, tubular structure.
Telescopic front fork incorporating sealed hydrau-
lic dampers.
Rear swingin fork with externally adjustable
springs.

Wheels
Tires
Brakes
' '''
Spoked rims, WM 3/2,15 x 18 front and rear.
Front 3,50 H - 18 H or 100/90 H - 18 H.
Rear 4,10 H - 18 H
or 110/90 H - 18 H.
Front:
Hydraulic disc brake, (right) twin braking cylinder
caliper . Hand lever controlled from the handlebar
(R/H). Hydraulic transmission, free from rear
braking system.
Disc
dia . 300 mm.
Braking
cylinder dia. 38 mm.
Master
cylinder dia. 12,7 mm.
Twin
hydraulic disc brake, (left) featured and di-
mensioned as above. Pedal lever controlled from
the motorcycle (R / H). Hydrau!ic t~ansmission,
bound to rear braking system.
Rear:
Hydraulic disc brake, t wi n braking cylinder ca-
liper. Pedal lever ccntrol/ed from the motorcycle
(R/H).
Disc dia. 242 mm .
Braking
cylinder dia. 38 mm.
Master cylinder dia. 15,857 mm .
Pedal
control actuates both twin front (left) and
rear brakes at the same time.
7

8
Dimensions and weights
Performances
Fuel and oil capacities
Group or part
Fuel tank (Reserve 14)
Sump
Gear box
Wheelbase
Max. width
Max. length
Max. height
Min. ground clearance
Curb weight
m 1,470
m 0,780
m 2,200
m 1,060
m 0,150
kg 243
Maximum speed in each gear, solo riding:
Gears Speed
low gear km/h 71,837
second gear km/h 103,502
third gear km/h 137,339
fourth gear km/h 165,329
top gear km/h 195
Fuel consumption: I. 6 x 100 km.
24 Petrol 98/100 NO-RM
13 Agip SINT 2000 SAE 10 W/50
10,7 50 Agip F.1 Rotra MP SAE 90

/
v1
Rear drive box
(bevel set lubrification)
Front fork (each leg)
Front and Rear Brakes
Passing ability
(U.S. Standards)
Braking ability
(U.S. Standards)
10,230
10 , 020
10, 070
Agip F.1 Rotra MP SAE 90
Agip Rocol ASO/R
Agip F.1 ATF Dexron
Agip F.1 Brake fluid
Passing
of a 55 feet long truck travelling at 20
m.p.h.
-Time: 6,5 seconds
-Distance travelled: 334 feet
Passing
of a 55 feet long truck travelling at
50 m.p. h.
- Time :
-Distance travelled: 8,7
seconds
900 feet
The above
includes a safety distance of 40 and
100 feet respe ct ively between the passing and
pace vehicle at the beginning
a!":d end of the
manoeuvre.
Stopping distance from 60 m.p.h. (solo, using
both brakes): 177 feet.
Stopping distance with passenger from 60 m.p.h.
(using both brakes): 190 feet.
9

10 CONTROLS AND ACCESSORIES
(fig. 2)
Master cylinder (right front brake)
2 Control lever (right front brake)
3 Throttle
control grip
4 Engine starting and emergency stopping
button
5 Key switch
6 Fuel tank
filler cap
7 Brake
control pedal (left front brake and rear
brake)
8 Foot-rest
9 Pillion foot-rest
10 Headlight
11 Front turn signals
12 Instrument panel
13 Km or mile counter
14 Rev. counter
15 Clutch control lever
16 Buttons controlling horn, flashing light and
turn signals
17 Lighting switch
18 Gear change control lever
16 Buttons controlling horn, flashing light and
turn signals
Lighting switch
17 Gear change
control lever
18 Rear turn signals
19 Tail light
20 Master cylinder (left front and rear brakes)
R;ght and left hand as seen in riding position.

11
2

12 IDENTIFICATION DATA
(fig. 3)
Every motorcycle is identified by a serial number
which
is stamped on the frame downtube and
on the crankcase.
The
number on the frame downtube appears
also in the certificate of
conformity and is va-
lid to legal effects for the identification of the
motorcycle.
Spare parts
In case of parts replacement, make it sure that
.. Original Moto Guzzi Spare Parts» only are used.
The use of non-genuine parts invalidates the
warranty right.

INSTRUMENTS AND CONTROLS -U.S.A. Model
Instrument panel (fig. 4)
1 Mile counter .
2 Rev.-counter.
3 Orange neutral indicator. It lights when the
gearbox is in neutra'l position. It may be well
to
make sure that this position is correct. In any
case
it is a good practice to pull the clutch be-
fore starting.
4
5
4 Red light indicating parking light on.
5 Red warning light. Oil pressure gauge. It goes
out when the pressure is sufficient for normal
engine lubrification . Should it not go out , the pres-
sure
is not correct; in this case the engine has
to be stopped and suitable
checkings are to be
carried out.
6 High beam warning
light (red).
7 Red warning
light indicating insufficient cur-
1~

14 rent from the generator for battery charge. It must
go out when the engine reaches a certain number
of revolutions.
By day riding al/ warning lights are to be out .
By
night riding the parking warning light only
and eventually the high beam warning light
are on.
Key Switch (fig. 5)
The key has three positions.
CHANGES FOR «EUROPE
MODEL»
Km counter .
4 Green town driving light.
6 High beam warning light (blue).
By night riding the town driving warning light, only
and eventually the high beam warning light are
on.
"1,, (turned anticlockwise) Standst ill, key removable.
"0
,, (vertical) Standstill, key nol r ~ ov able.
"2
,, (turned clockwise) Rea dy s 2rt al l ~n!rols are in. Key not removable.

Lighting switch (LIGHTS) (fig. 6 «A .. )
Left, on the handlebar, 4 positions.
Lights off.
« 2» PARK Parking light (USA).
« 3 ~~ L
u5n
Town driving light (Europe).
Low beam.
High beam.
To
come back to pos ition OFF press
the button
towards the lefts.
6
7
Horn, flashing light
and turn signal controls (fig. 6 «8 .. )
Left, on the
handlebar .
«6
.. HORN Horn button.
«7 .. FLASH Flashing light button.
«8 .. OFF Turn signals button.
«9 .. When turned to the right operates the right
Signals.
«10
.. When turned to the left operates the left
si
gnals .
15

16 Engine starting and
emergency stopping (fig. 7 "A
.. )
Right, on the handlebar.
With the
ignition key in position ,,2 .. in fig. 5, the
motorcycle is ready to be started. To start the
engine (see "A
.. ) presse the button .. 1 .. START.
To stop the engine (in case of emergency) turn
the button in position
,, 3 .. or ,,4 .. OFF.
After engine stopping reset key in position ,, 0 ..
fig. 5.
Starter control (fig. 27)
The control lever for starting a cold engine is
fixed to one of screws securing
rocker box cover
to left
cylinder head.
"A .. Starting position.
"8 ,, Riding position.
Throttle control (8 in fig. 27)
Right on the handlebar;
thrott le is opened by
Clutch control lever (C in fig. 6)
Left on the handlebar, to be used for starting
and gearshifting only.
Front brake control lever (right)
(C in fig. 7)
Right on the handlebar, connected to its master
ylinder.
turning toward the rider and closed vice~ ' e sa 8 _________ ...L..IO';' __ =

Brake control pedal (F in fig. 16)
On the rigth side of the motorcycle.
It controls both rear and left front brakes, link
connected to its master cylinder.
Gearshift pedal (fig. 8)
On the left side of the motorcycle (fi g.8) .
Low gear: pedal down.
2.
3. 4. and top gear: pedal up.
9
Neutral position: between low and 2 nd gear. 17
Before operating the gearshift pedal , the clutch
lever has to be completely pulled in.
Fuel filler cap (fig. 9).
To open it, press the control button
~A » .
Fuel taps (fig. 10)
They are located rear, under the fuel tank

II
1
~~
18 Positions:
"A» Open (vertical).
"R» Reserve (horizontal) see "R» on the taps.
"C» Closed (horizontal) see "C» on the taps.
Terminal block with fuses (fig. 11)
It is located under the seat (fig. 11) and holds n. 6
15 A fuses.
«1» Rear stop light horn, flashing light.
«2» Starting relay. Turn signals.
11
12
«3» Warning lights. Oil-gen-N Low -High beam
with
warning light.
«4» Parking or town driving lights -Instruments.
::~:: } Spare fuse.
Steering locking (<<A» in fig. 12)
To
lock:
-turn handlebar fully to the right.
-insert key into
lock set, turn it anticlockwise

and push it fully in, release it and take it off.
To release:
-insert key into lock set, turn it anticlockwise
release it and take it off.
Side Stand
The side stand is useful for short staying. His of
automatic return type. Foor longer staying use
central stand.
19