Sterling Plumbing Harrier 48 - Manual (Page 30)

Incorrect/contaminated fuel. Drain tank and fill with correct fuel.
PROBLEM POSSIBLE FAULT REMEDY
Engine vibrates excessively Mounting bolts loose. Tighten bolts
Cutterblade bolt loose. Tighten bolt
Cutterblade out of balance. Balance cutterblade
Bent crankshaft. Consult your dealer
Uneven cut Undulating ground conditions Change direction of travel
Cutterblade worn Sharpen the cutterblade
Cutterblade out of balance Balance the cutterblade
Wheels / roller damaged Inspect and replace as necessary
Discharge chute blocks Grass is wet Mow dry grass
Cut height too low Increase cut height
Grassbag full Empty grassbag
Airflow through the Clean the grassbag
grassbag is restricted
Engine speed too slow Set throttle to fast position
Mower is hard to push Cut height too low Increase cut height
Wheels / roller damaged Inspect and replace as necessary
Mower will not self propel Clutch out of adjustment Adjust clutch cable
Drive belt damaged Replace drive belt
Poor grass collection Airflow through the Clean the grassbag
grassbag is restricted
Discharge chute blocked Remove blockage
Wet grass Mow dry grass
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TROUBLE SHOOTING
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