CARBURETTOR CIRCUITS
Pulsar 150/180 DTS-i
Service Station Manual
82
Dealer Development Center
Akurdi Pune
1. Pilot Jet
2. Pilot Outlet Hole
3. Bypass /
Progression Holes
4. Butterfly Valve
5. Volume Control
Screw
Function
Construction
Working
The progression circuit provides the air / fuel mixture at small throttle opening when pilot circuit is still
working but unable to meet the engine demands on small throttle opening.
The progression circuit follows the path of pilot circuit and the construction is same as that of pilot circuit.
As like pilot circuit the fuel is metered by pilot jet and air volume is metered by pilot air jet. This mixture in
Towards
Engine
Air Inlet
for pilot jet
Progression Circuit : Constant Velocity Carburettor
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