Power Blower 21
Operator's Manual
spark plug
Level 2.
Parts Required: RepowerTM Tune Up Kit
IMPORTANT
Use only NGK
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
0.65mm (0.026 in.)
cooling system
Level 2.
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
1.Remove accumulated debris from intake grill between backpack frame and blower housing.