Ford CSG-850 / WSG-858 — Fuel Level Adjustment — Wet
Adjustments · Carburetor fuel bowls
For the Ford CSG-850 / WSG-858, from the Ford service manual.
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Before you start
- Do not loosen the lock screw or adjust with the sight plug removed and engine running; fuel spray is a fire hazard
Procedure
- Operate engine to normalize temperature; stop engine and remove air cleaner.
- Remove fuel level sight plug and gasket; check fuel level in each bowl separately.
- If too high, drain bowl, refill and recheck before altering float setting.
- To lower level: loosen lock screw and turn adjusting nut approximately 1/2 turn in.
- To raise level: loosen lock screw and turn adjusting nut out in 1/6 turn increments.
- After each adjustment tighten lock screw, install sight plug and run engine to stabilize.
- Check level at sight plug opening; install sight plug and gasket.
- Install the air cleaner if other carburetor adjustments are not required.
Tools required
- Container for fuel spillage Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 1/6 turn of adjusting nut raises or lowers float at sight plug opening 3/64 inch
Source: Ford 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.