Kohler 48RCLB / KG6208 — Check, Adjust and Replace the Spark Plugs
Maintenance
For the Kohler 48RCLB / KG6208, from the Kohler operator's manual.
Applies to: Kohler 48RCLB, Kohler KG6208 engine
Before you start
- Hazardous voltage: stop engine and disconnect battery leads, negative (–) first
- Hot engine and exhaust system: do not work until it cools
Parts for this job
- KOH-48RCLB-SPARK Spark plug buy
Part numbers from the service-parts list for Kohler 48RCLB. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Stop the engine and allow it to cool.
- Label or mark spark plug wires before disconnecting.
- Wipe dirt and oil away from the area around each of the four spark plug wires.
- Disconnect the spark plug wires.
- Use a spark plug wrench to remove the spark plugs.
- Inspect each spark plug body for cracks, damage, or discoloration.
- Inspect electrodes; they should be light brown. Replace plug if burned, sooty, or oil-fouled.
- Use a spark plug gap tool to measure the gap and adjust to specification.
- Thread the spark plugs into the cylinder head.
- Tighten the spark plugs to specification.
- Reconnect the spark plug wires.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spark plug gap 0.76 mm (0.03 in.)
- Spark plug torque 27 Nm (20 ft. lb.)
- Check spark plugs after every 500 hours of operation
Full service-parts list: Kohler 48RCLB →
Source: Kohler operator's 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.