Kohler L600 / L654 — Model KN Secondary Gas Regulator Lock-Off Adjustment
Adjustments
For the Kohler L600 / L654, from the Kohler service manual.
Applies to: Kohler L600 engine
Before you start
- Do not permit inlet pressure to exceed maximum (usually 6 oz.).
Procedure
- With engine stopped, slowly turn lock off screw out (counterclockwise) until fuel starts to flow through the regulator.
- Turn screw in (clockwise) until flow stops and note position.
- Turn screw in one more turn for final setting.
Tools required
- Manometer or ounce pressure gauge for inlet pressure check Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet pressure 4-7 ounces (7-12 inches water column)
Source: Kohler 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.