APRILIA TUONO 1000 R, Workshop Manual

Page: 78 / 279

FUEL SYSTEM
3 - 28
TUONO 1000
3.3.4. REFITTING THE THROTTLE UNIT
WARNING
After having disassembled the throttle unit,
replace all gaskets, O-rings, torsion springs,
bushings and seals. These components are
supplied with the repair kit.
• Fit the new O-rings (1) and seals (2) on both injectors.
•
Fit the injectors (3) in the left injector bracket (4) and
right injector bracket (5).
•
Fit the left injector bracket gasket (6), the right injector
bracket gasket (7) and the two seals (8) on the throttle
unit.
•
Fit the complete left injector bracket (4) and the right
injector bracket (5) on the throttle body and secure
them with the new M6x25 screws (9) (10).
• If the synchronisation screws (11) and their O-rings
(12) have been replaced, moderately tighten the
screws (11) until they are flush with the surface and
then loosen by one turn.
Synchronisation screw pre-adjustment (11) : 1 turn.
WARNING
Precise screw adjustment (11) must be
performed with a vacuum gauge.
• Secure the fuel pressure regulator (13) with the two
M6x16 screws (14).
NOTE Spread a thin layer of grease over the surface of the
fulcrum pin (18).
•
Fit the cold starting lever (15), the torsion spring (16)
and the shaft gasket (17) in the fulcrum pin (18).
•
Fit the complete fulcrum pin (18) on the accelerator
wire securing bracket.
NOTE Ensure that the torsion spring is hooked to the cold
starting lever (15) and to the wire securing bracket.
•
Spray the spring (16) with chain grease.
• Fit the shaft gasket (17) on the fulcrum pin (18).
•
Fit the two bushings (19) and the torsion spring (20).
• Fit the belt roller (21) on the accelerator wire securing
bracket.