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Wisconsin — Carburetor Disassembly

Repair & overhaul · Zenith Model 87A8 carburetor

From a Wisconsin service manual covering: V-460D, V-461D, V-465D, V460D, V461D, V465, VH4, W4-1770, vg4d. Check it applies to your exact model before use.

Applies to: Wisconsin VH4

Before you start

  • NEVER USE A DRILL OR WIRE TO CLEAN OUT JETS OR IDLE HOLES.

Procedure

  1. Remove the three bowl assembly screws (145, 46) and separate fuel bowl (39) from throttle body (26).
  2. Remove the main jet plug (43) and fibre washer (42) using a 9/16 inch open end wrench.
  3. Remove the main jet (41) and fibre washer (40) using Zenith Tool No. C161-83 main jet wrench.
  4. Remove the idle jet (38) using a small screwdriver.
  5. Remove the bowl drain plug (44).
  6. Remove the float axle (35) by pressing against the end with the blade of a screwdriver.
  7. Remove the float (36).
  8. Remove the fuel valve needle (31) using the fingers.
  9. Remove the fuel bowl to throttle body gasket (37).
  10. Remove the main discharge jet (32) using a small screwdriver.
  11. Remove the fuel valve seat (31) and fibre washer (30) using Zenith Tool No. C161-85.
  12. Remove the idle adjusting needle (17) and spring (18).

Tools required

  • 9/16 inch open end wrench Amazon
  • Zenith Tool No. C161-83 main jet wrench Amazon
  • Zenith Tool No. C161-85 Amazon
  • small screwdriver Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Source: Wisconsin service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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