Starter System - Closed Throttle (2 Cycle) - Polaris Trail Blazer Service Manual

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FUEL SYSTEM/CARBURETION

Starter System - Closed Throttle (2 Cycle)

Mikuni carburetors use a starter system rather than a choke. In this type of carburetor, fuel and air for starting

the engine are metered with entirely independent jets. The fuel metered in the starter jet is mixed with air and

is broken into tiny particles in the emulsion tube. The mixture then flows into the plunger area, mixes again with

air coming from the air intake port for starting and is delivered to the engine through the fuel discharge nozzle

in the optimum air/fuel ratio. The starter is opened and closed by means of the starter plunger. The starter type

carburetor is constructed to utilize the negative pressure of the inlet pipe, so it is important that the throttle valve

is closed when starting the engine.

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Cable Adjuster

Cable Adjuster Lock Nut

Plunger Spring

Starter Plunger

Inlet Starter Air

Emulsion Tube

Inlet Bleed Air

Throttle Valve