MOTO GUZZI 850-T User manual

S.C.R,A, mod . 0\9 • &·74 • \. 800 . Prinll1d In Itary • Meriel'll · Befgerno

Dear rider,
f irst
of elf we wI sh to thank you for choosing th is motorcycle of our
production.
By lof/owing the instructions outflned
fn this manual you will ansure
your bike a fong and 'roublefree life.
Before riding, please read thoroughly this manual In order to kn ow your
motorcycle's features and how to operate
it sa/ely.
All major checkIng and overheul Jobs are best carried out by our daa-
lers who have the necessary fa cilities to quickly and competently repair
your Moto Guzzi.
Repairs or adjustments by other than a Guzzi dealer during the warranty
period could /nvalfdate the warranty right.

INDEX
4 Main features
10 Controls and accessories
12 Id entJI lcatlon data
13 Inslruments and co n trols
19 Ri ding instructions
22 Maintenance
28 Removal of wheels
31 Lubrication and maintenan ce chart
36 lub ricatio ns
39 CarburaUon
42 Valve gearing
43 Ignition· Checking and ad Justment of double contact breaker
45 Checking of Ig nition timing . liKed advance_
47 Electrical eQuipment

4 MAIN FEATURES
Engine
Valva gear
Ca rburatlon
2-cyUnder 4·slroke
Cylinder disposition
Bore
Stroke
Displacement
Compression ratro
Revs. al max. engine spee d
Maximum horsepower
D.H.V. push rod operated.
Timi ng data:
I nle t: opens
closes
exhaust: opens
closes
20" before TOe
52" alter BOC
5 2" belore BDC
20" aller T OC '
~ v J 90"
mm 83
mm 78
" 844
9,5
7000 f.p.m.
HP 68
Rocker clearance f or valve li ming mm 1,5.
Normal r
ocker clearance, cold 8n glne , mm 0, '22 .
2 Oell 'O rlo carbure tor s type VHB 30 CO (rl ghl) ,
V HB 30 CS (Iell).

Lubrl ca Uo n
Ignition
Ignition datil
St arti ng
Pressure, by gear pump. 5
Normal lubrication pressure 3.8 + 4,2 kg/aqcm
(controlled by rellel·valve).
Electrically
contr oll ed 011 pressure gauge.
Front (
14 V • 13 A, on the malnshal t.
By battery, with double co ntact breaker and auto·
matlc advance.
Initial advanca
Automatic advance
Full advance
Contact
break er gap mm 0,42 + 0. 48
Spark plugs:
long thread (0 14 x 1 ,25)
Thermal degree 240
Plug p
oi nts gap mm 0,6
2 Ignit io n colli .
..
,. .
34·
El ec t ric starter with electromagnetic ratchet con·
trol. Ring gear bolted on Ilywheei. Starter button,
rig
ht on the handlebar.

6 Trasmission
Clutch
Ga.r box
Frame
WhHla
Ory type, twin plates, flywheel driven. Controlled
by lever, on the handleba r (left).
Five speeds, frontal engagemenl, constant mesh
gear•. CUlh drive I ncorporated .
Controlled by pedal on the teft side 01 the mo ·
toreyel• .
Bellel gear 'atlo; 1 : 4,625 (Z = 8-37 ).
Overall gear ratios:
low gear =1 : 11 , 424
second gear = 1 : 7,928
thi rd gear = 1 : 5,980
fourth gear "" 1 4,963
top gear :: 1 4,284
DupleK cradle, tubular structure.
Telescopic Iront lork incorporating hydraulic
damper•.
Rear sw Inging lork with externally adj ustab le
sp ri ngs.
Spoked rlml, WM 3/2 .1 5 x 18 Ironl and rear.

Olmenl lonl and welghtl
Front 3. 50H - 18541 studded.
Rear 4.
10H · 18541 studded.
Pressure:
Iront solo kg/sqcm
with passenger 1,8
rea,
~I o 2,2 kg/sqcm
with passenger 2,S kg/sqcm
The abore data Bre tor normal rIdi ng (cruIsing
speed). /I u si ng the motorcycle at constant high
speed or on motorways, it Is recommended to
Increase pressure by 0,2 kg/ sqcm .
Front : hydrau lic disc brake. Disc 0 mm 300 .
Co ntrolled by lever. ri ght on the handleber.
Rear: expan
si on type (0 220 x 25) . Conlrol1ed by
pedal on the right side
of the motorcycle.
Wheelbase m 1.470
Max. width m 0,780
Max. length m 2. 200
Max. height m 1,060
Min. ground clearance m 0,150
Engine weight (dry) with carburetors and alec-
7

8
Performanc es
Electrical e qu ipment
Pa nI ng ability
trical eQu ipment, without Inlel silencers, exhaust
pipes and silencers kg 60,
500
Curb weight kg 235 B.
Maximum speed In each geaf, solo rid ing :
Geafs Speed
low ge ar km/ h 76 ( 47 m.p.h .)
second gear km/ h 110 ( 68 m.p.h.)
third gear km/ h
146 ( 90 m.p.h.)
lourlh gear km/ h 176 (109 m.p.h.)
top ge af km/ h 195 a. ( 121 m.p.h.)
Fuel cons umption : I. 7, 27 x 100 km (CU NA ).
Battery
Head li ght 01 sealed beam type
Rear li ght (lamp)
parking and stop
Turn
si gnal tamps
Speedo and rev. counter lamps
Neutral, generator, all
and lights lamps
Horn
12V • 32Ah
1 2V - st 20W
1 2V-21W
12 V • 3 W
12V • 1 ,2W
12V
Passi ng of a 55 feet lo ng truck trave l ling at
20 m.p,h.
- Time:
- DI stance travelled: 6,5 seconds
334 feet

Braking ability
Passing of a
55 feet lo ng truck Iravailing at 9
50 m.p.h.
- Time:
- Distance travelled: 8,7 seconds
900 leet
The above Inctudes a salety d is tance 01 40 and
100 leet respeclively between the passing and
pace vehicle
al the beginning and end 01 Ihe
manoeuvre.
Sl opp ing distance 11 0m 60 m.p.h. (solo, using
both brakes): '77 leel.
Slo pp ing distance wllh passenger fr om 60 m.p.h.
(using both brakes): 193 leel.
Fu el and oil ca pacitie s
Group or part
Fuet tank
Reserve
Sump
Gear box
R
ear drive box
(bevel sel lubrication)
Fr ont fork (each leg)
Fr
on t brak e
Quantity R
eco mmend at io n
I. 25
I. 4
I. 3,5
I. 0,750
PetrOl 98/100 NO-RM
Aglp F.l S
upermoloro il
SAE 2OW/
SO
Agip F.l Ro lr a MP SAE 90
I. 0,340 Aglp F.l Rotra MP SAE 90
I. 0.020 Motykole t ype A
I. 0.050 Agip F.1 ATF Dexron
Aglp F.l Br ake fluid

10 CONTROLS AND ACCESSORI ES
(Ilg. 2)
1 Front brake disc .
2 Front brake pliers .
3 Pump and flu id reservoir, Iront brake.
4 Front brake control lever.
S Throttle control grip .
6 Starter and
engine emergency stop .
7 Key switch.
8 Fuel filler cap.
S Rear brake pedal.
10 Footrest
11 Footrest passenger.
12 Headlight.
13 Front lurn signals.
14 Indicator panel.
15 Mile counter .
18 Rev-counter.
17 Clut ch cont rol levef.
18 Horn, flashing light end turn signals buttons.
19 lighting swUch.
20 Gearshift pedal.
21 Aear turn signals.
22 Rear lig h t.
Ri ght and left are fntflndad as If seen In ri ding
posillon.

11
2

12 IDENTIFICATION DATA
(lig . 3)
Every motorcycle Is Identified by a se rial number
which is stamped on the frame
downtube and
on the crankcase.
The number
on the Ir ame do wn lube appears
also in the certif lc ste of conformity and Is va-
lid \0 legal effects l or the i dent ification 01 the
motorcycle.
3

INSTRUMENTS AND CONTROLS
Instrument panel
(fig, 4)
Mile counter.
2 Rev . -counter .
3 Red warni ng IIghl Indicati ng Insullleleni cur-
rent from the generator lor battery charge . II
musl go out when the engine reaches a certain
number of revoluti ons .
--"I ,
4 Orange neutral Indicator . It lights when the
gearbox Is in neutral position. It may be well to
make sure Ihal this posit ion is correct . In any
cese II is a good practice to pull the clutch b&-
lora starting.
5 Red warning light. 011 pressure gauge, It goes
13

14 out when the pressure Is sufficient for normal
engine tubrication. Should
it not go out. the pres-
su re is nOI correct: In this case the engine has
to be stopped and sultabte checklngs are to be
carried ou t.
Ignition key and steeri ng lock
The key h as tour positions (fig. 5):
6 High beam warning Ught (red).
By day riding a/l warning lights are to be out.
. ,.
Standstill, key not removable.
.1 .
.,.
(Intermediate)
•2.
Turned antlclockwlse, siandsllll, key rem ov ab le. Steering locked on removal 01
key an d tu r ni ng of the ha ndlebar right or left.
Tu rn ed clockwise, between position .0. and position _2 .. , key removable. In
this po sil1o n the key can be removed without locking the steering.
Turned clockwise, ready to star
t, all controls are In.

Lights switch
lett , on the hand lebar , .( posilions (fig. 6 ~ B ~ ) .
.. 1. OFF Ughts all.
-2. PARK Rear Ught.
.... H
.5.
low beam .
High beam.
Safely (10 come back 10 position
OFF press the bullan to war ds the
lelt) .
Horn, flashing light
and turn signals
Lelt, on the handlebar (Iig. 6 .e_) .
.. 6 .. HORN Horn button.
.. 7 .. FLASH Flashing light bullan .
.. 8 .. Turn signals button.
.. 9 .. When turned to the right operates the right
signals.
·10 · When turned \0 the lell operates the Jefl
sIgnals
15

16 Starting and engin e
e
mergenc y stop
RighI, on the handlebar (fig. 7 _A_).
With the
ignitio n key In pos it ion .2 .. the motor-
cycle is ready to be sterted. To start the engine
(see "A..) press the bulton .. , . START.
To stop the engine (in case 01 emerge ncy) turn
the bullon in position .. 3. or ,, 4. OF F.
Carburetor starter control
The t wo levers for starting 8 cold engine ar e
located lett on the le lt carburetor and ri ght on
the ri ght c arburet or (Ilg. 23 ).
• A. Starting position.
•9. Riding position
Throttle co ntrol
Ri ghI on the hand le bar; th r oWs Is ope ned by
turning toward the rider end c los ed vlceversa.
Clutch control lever
Left on the handlebar, to be used for starting
and gearshiftlng only .
Front br ake c ontrol lever
Right on the handlebar, con nected with the brake
pump !!uid reservoir.
Rear brake pedal
On the ri ght side 01 Ih e moto rcycle.
' _ - ", m

Gearshift pedal
On the lett side 01 the motorcycle ( Ilg . 8).
L ow gear : pedal down.
2. 3. 4. and top gear: pedal up.
Neutra l position: between low and 2n d gear.
Before op erating Ih. geafshllt pedal, Ihe clutch
'aver "U to be completely pulled In. •
"
Fuel filler cap
To open I t. press Ihe control butt on ./4. .. (fig. 9 ).
Fuel taps
They afa locate d r •• r, under the fuel tank
(fig . 10 ).
POlltlons:
-/4.- Open (vertical).
.. A. Reserve (horizontal) see .. R. on the tapa.
.. c. Closed (horizontal) 188 ·e· on the lapa.
17

18 Terminal blo ck with fuses
II Is locat ed under the seal (fig. 11) a nd ho lds
n. 6 15 A fuses .