GRASS TRIMMER
OPERATOR'S MANUAL 21
WARNING DANGER
Catalytic mufflers operate at extremely high temperatures. Muffler area must be kept clean. Do not perform maintenance on the muffler until engine and muffler are completely cool, otherwise serious personal injury may occur.
SPARK PLUG
Level 2.
Tools Required: Spark Plug socket wrench and screw driver, Feeler gauge. Preferably a wire gauge.
Parts Required: 90064 REPOWERTM
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
COOLING SYSTEMS CLEANING
Level 2.
Tools required: Cross Head Screwdriver, 3 mm Hexagon wrench,
Cleaning Brush,
Parts Required: None.
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.