35
Spark Plug Inspection
Warning:
Hot exhaust system and engine can cause burns.
Spark plug condition is indicative of engine operation. The spark plug firing end
condition should be read after the engine is warmed up and the vehicle is driven
at higher speeds. Immediately check the spark plug for color.
1. Ensure that the vehicle is safely parked on a flat surface.
2. Remove the seat and the spark plug cap.
3. Remove the spark plug by rotating it counterclockwise.
4. Observe the spark plug.
a. A normal plug insulator tip is gray, tan, or light brown, few combustion
deposits, and the electrodes in good condition. If the tip is white,
overheating has occurred. Improper spark plugs or incorrect throttle
body adjustments can cause overheating.
b. A spark plug that is wet fouled will have a black insulator tip with a
damp oil film covering the firing end. Excessive oil or incorrect throttle
body adjustments can wet foul spark plugs.
5. Reinstall the plug by inserting it into its housing and rotating it clockwise
until tight.
Cooling System
Danger:
Radiator coolant is under pressure when the vehicle is hot. Escaping steam
can cause burns.
NEVER remove the radiator pressure cap while the engine is warm or hot.
Always allow the engine to cool before removing the pressure cap.
Notice:
Do not travel through water deeper than 12 inches, or the center cap of the
wheels. Water can enter the engine and damage essential components.
Driving through tall grass or leaves can cause debris to build up on the
engine fan, impeding engine cooling. Frequently check to ensure that the
engine fan is free of debris.
Your vehicle’s cooling system consists of an aluminum radiator with a pressure
cap, overflow bottle, and connecting hoses which attach to the engine. As
coolant operating temperature increases, the coolant heats, expands, and is
forced out of the radiator past the pressure cap, and into the overflow bottle. As
coolant temperature decreases, the coolant cools, contracts, and is drawn back
up from the tank, past the pressure cap, and into the radiator.
Summary of Contents for GC 1K
Page 1: ...2020 OWNER S MANUAL...
