Walbro Carb settings

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Walbro Carb settings

Postby Pony Master » Tue Aug 24, 2010 2:25 am

I got the 100 I recently purchased started the other day. It ran pretty good on 3/4 choke, so I figured it was due for a carb rebuild. The carb seems to be in real good shape with very little play in the throttle shaft. I have it all cleaned up and ready to reassemble after a little drying time. Where should I start, and how should I get this thing dialed in?
1947 Circle Cub, 193, 189
1954 Cub w/FH, IH100, 194, F11
1956 Cub Loboy w/FH and 194
1960 Cub Loboy w/FH and L-54
1953 Super A, 2 seater B, Avery V, Avery A, JD M, MH Pony, Leader D, Allis Chalmers C, and my Great Grandpa's ZA Minneapolis Moline.
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Re: Walbro Carb settings

Postby Paul B » Tue Aug 24, 2010 7:53 am

A 100 originally had a Carter/Kohler carburetor, and in my opinion is a much better and less troublesome carburetor, but these preliminary settings are listed in the Kohler "K" Series service manual (Kohler owns the rights to the Carter model N and the Kohler carb is a copy of the Carter).

Carter or Kohler; Low Idle, 2-1/2 turns, high 2 turns

Walbro fixed jet; 1-1/4 turns

Walbro adjustable jet; High 1-3/4 turns, high 1-1/8 turns.

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