Ford LSG 875 — Carburetor Idle Mixture Adjustment
Adjustments · Idle mixture screws
For the Ford LSG 875, from the Ford service manual.
Browse Ford generators & specs →
Procedure
- Adjust idle mixture screws fully in until lightly seated; back out 1-1/2 revolutions.
- Be sure engine is thoroughly warmed up; adjust curb idle speed to specification with throttle stop screw.
- Turn idle mixture screws inward until engine speed begins to drop from lean mixture.
- Turn screws outward until engine speed begins to drop from rich mixture.
- Turn screws inward to a point between the two extremes for maximum smoothness and RPM.
- Reset idle speed to specifications and recheck idle mixture adjustment.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Idle mixture screw primary setting 1-1/2 turns open
- Curb idle RPM 550-575
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.