Carburetor Inspection - Polaris PREDATOR 50 2009 Manual

Carburetor Inspection

1. Remove the carburetor slide assembly. Disassemble the
components and inspect for wear. Inspect slide needle and
look for discoloration, shiny spots, or an area that looks
different than the rest of the needle. The middle to upper
portion of the needle contacts the needle jet and is the most
likely wear point. If slide needle shows signs of wear
replace both the needle and needle jet to prevent a rich
condition.
Inspect this area
Slide
2. Inspect the inlet needle tapered surface for any sign of wear
or damage. Be sure the spring loaded pin is free moving
and returns freely when pushed. The inlet needle and seat
should be pressure tested after assembly.
Good Condition
Seat
Needle
Retainer
E-Clip
Jet Needle
Worn
Wear Areas
3. Inspect the idle speed adjust screw tip for flat spots and the
pilot mixture screw tip for damage. If any damage is
present on either screw, it must be replaced.
Mikuni Pilot Air Screw
Inspect
Keihin Pilot Air Screw
4. Inspect the float bowl vent tube for cracks near the bottom
of the tube.
NOTE: A continuous fuel leak from the carburetor
drain hose can be a result of a cracked bowl vent
tube.
FUEL SYSTEM
Inspect
Inspect
4.13
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