Carburetor Cleaning; Carburetor Inspection - Polaris RANGER RZR 170 Service Manual

FUEL SYSTEM

Carburetor Cleaning

Protect eyes from contact with cleaner. Take
appropriate safety measures during these
procedures. Safety glasses and chemical
resistant gloves are required. Should you get
cleaner in your eyes or if you swallow cleaner,
seek medical attention immediately.
Carburetor cleaners can be extremely caustic.
Extended periods of soaking can loosen the
adhesive sealer on the passage drill-way plugs.
Do not soak rubber or plastic components or O-
rings in caustic cleaning solutions. Irreparable
damage may occur. Do not use agitator-type
carburetor cleaning equipment.
Rubber parts must be cleaned with mild
detergent and hot water only.
1. Thoroughly clean the carburetor body, jets, and all
passages with carburetor cleaner or electrical contact
cleaner.
2. If the carburetor is extremely dirty or contaminated
with fuel residue and varnish, soak for short periods
only in carburetor cleaner, and rinse in hot water.
3. Replace the jets if they have a buildup of fuel residue
or bacterial growth that cannot be removed. Even a
small amount of residue will reduce the flow
characteristics of the jet.
4. Verify all passages and jets are unobstructed by
spraying electrical contact cleaner through the
passages.
IMPORTANT: Do not use wire or welding tip cleaners
as the orifice size may be altered.
5. Use low pressure air to dry carburetor body and all
components.
4.6
WARNING
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.

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