Spark Plug; Cooling System - Echo 1E PB-24LN Operator's Manual

18

SPARK PLUG

Level 2.
Tools Required: 20mm (3/4in.) Spark Plug deep socket, Feeler gauge,
preferably a wire gauge. Brush.
Parts Required: Spark Plug, NGK - BPM-7Y P/N 99944500071
1. Remove spark plug and check for fouling, worn and rounded
center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to
clean. Remaining sand will damage engine.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 145-155 kg/cm (125-135 in. lb.).
COOLING SYSTEMS CLEANING
Level 3.
Tools required: Cross Head Screwdriver, 3 mm Hex Wrench, Pointed
Wood Stick, 25-50mm (1in.-2in.) medium bristle paint brush.
Parts Required: None if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder fin area. This flow of air carries
combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching the
cylinder.
• Dust and grass build up on the outside of the cylinder. This build up
insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages or cleaning of cooling fins is
considered "Normal Maintenance". Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
Remove accumulated debris from crankcase intake grille (A) above the
fuel tank.
Cleaning Cylinder Fins
1. Remove spark plug.
2. Remove engine cover (three screws) and clean cylinder fins to
allow cooling air to pass freely.
0.65 mm
(0.026 in.)