Power PrunerTM 21

Operator's Manual

spark plug

Level 2.

Tools Required: T-Wrench, feeler gauge, Soft metal brush

Parts Required: REPOWERTM Tune-Up Kit

IMPORTANT

Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada) otherwise severe engine damage may occur.

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 0.65mm (0.026 in.) by bending outer elec- trode.

4.Tighten spark plug to 150-170 kgf • cm (130-150 in. • lbf).

0.65mm (0.026 in.)

cooling system cleaning

Level 2.

Tools Required: T27 Torx L-Wrench, Cleaning Brush, 25 - 50 mm (1 - 2 in.)

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.