Land Rover Defender 90 110 Workshop 1984 Rover Manual

PETROL FUEL SYSTEM 119 I 
4:.;.:

PETROL FUEL SYSTEM 
Adjust throttle linkage  Fast 
idle adjustment 
20. On  the  left-hand carburetter,  place a 0,15 mm 
(0.006 in) feeler  between  the underside of the 
roller  on  the countershaft  lever and  the  throttle 
lever. 
21. Apply pressurc to the throttle  lever to hold the 
feeler. 
22.  Tighten  the screw 
to secure  the throttle  adjusting 
lever, then withdraw  the feelcr. 
20 
26. The fast  idle adjustment  is pre-set  on the  left-hand 
carburetter  and  should not normally  require...

PETROL FUEL SYSTEM 1191 
6 ;: CARBURETTER OVERHAUL - S.U. HIF 44 - 
5 ;.’‘ Right hand 
DISMANTLE 
1. Remove the carburetters  from the engine  and clean 
the  exteriors  with a suitable  solvent. 
2. Remove  the  two  nuts  and  spring  washers and 
withdraw 
the air  intake adaptor  and joint washer. 
3.  Unscrew  and  remove 
the piston damper  assembly 
and  drain  the oil. 
4.  Remove  the  three  screws and lift
-off the suction 
chamber complete  with piston and spring. 
5. Remove  the  spring...

PETROL FUEL SYSTEM 
42. Fit the starter  assembly to the carburetter  body and 
secure  with the two  screws. 
43. 
Fit the  end  seal  and cover. 
44.  Fit the  return  spring. 
45. 
Fit the  cam  lever  and  tension the spring. Fit a new 
lock  washer  and secure  with the nut and  bend  the 
tabs  over a convenient  flat. 
46.  Adjust  the  coils  of the  spring, 
if necessary,  to 
prevent  coil binding. 
CT?374M 45 
KEY TO S.U. CARHURETTER COMPONENTS 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
10. 
11....

PETROL FUEL SYSTEM 
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19 
17  

El PETROL FUEL SYSTEM 
Fit throttle lever assembly 
47. Fit the return  spring so that  the  longest leg rests 
against 
the throttle adjusting  screw housing. 
48.  Fit the  throttle  adjusting  lever and lost motion 
assembly  and tension  the return spring. 
49. 
Fit the  throttle actuating  lever. 
50. Fit the bush washer  and lock  washer. 
51. Fit and tighten  the special  nut and  bend  the lock 
tabs  over  a 
convcnient flat. 
Fit jet and  float assembly 
52. Fit the jet bearing, long  end...

PETROL FUEL SYSTEM 
._ I .. e.;;.!!,{: 59. Assemble the jet to the  bi-metal  jet lever  and 
ensure  that the 
jet head  moves  freely in the 
cut-out. 
60. Fit the jet and  bi-metal  jet lever  to the  carburetter 
and  secure  with the spring  loaded  jet retaining 
screw. 
(. :. z: , . , . . .. , , . .. 
Fit piston and suction chamber 
64. Fit the  needle,  spring and guide  assembly  to  the 
piston  ensuring that  the  etched  arrow head on the 
needle  locating  guide is aligned  between  the...

PETROL FUEL SYSTEM 
72 
ST1880M 
73. Connect the linkages and top-up the  carburetter 
dampers 
with a  recommended oil to  the  top  of the 
hollow  piston rod. 
74. Tune and adjust  the carburetters. 
ST1914M / 
TUNE  AND ADJUST - SU HIF 44 CARBURETTERS 
Special  tools: 
Carburetter  balancer 605330 or B89 
Non-dispersive infra-red exhaust  gas anaiyscr 
General  Requirements  Prior to Tuning  Carburetters. 
Accurate  engine speed is essential  during carburetter 
tuning, 
therefore the  distributor...

PETROL FUEL SYSTEM 
TUNE AND ADdUST 
The following  instructions  apply to both carburetters 
unless  otherwise  stated. 
Before  commencing  the following  instructions,  remove 
the  air cleaner,  air intake  elbows,  mixture  adjustment 
screw  plug and mixture  screw cap. 
CARDURETTERBALANCE 
Using balancer 605330 
1. Disconnect  the interconnecting link between  the 
two  carburetters. 
Fit the balancer to the 
carburetter  intakes and ensure  that there  are no air 
leaks, 
if necessary,  zero the...

PETROL FUEL SYSTEM 
7. Without  altering the position  of the  balancer 
control,  place 
the balancer on the  second 
carburetter  intake  ahd  adjust  the idle screw  as 
necessary  to 
achicve the same  reading. 
. 
8. Alternatively,  adjust  and check  the balance of both 
carburetters  until  an idle speed 
of 700 to 
800 rev/min is obtained. 
9. Reconnect  the  throttle inter-connecting  link,  and 
again  check 
the idle spced and balance. 
Mixture  setting 
10. Ensure  that  the engine  is still...