Hayter Harrier 48 Owner's Handbook Manual page 30

TROUBLE
PROBLEM
Engine vibrates excessively
Uneven cut
Discharge chute blocks
Mower is hard to push
Mower will not self propel
Poor grass collection
1.30
SHOOTING
Incorrect/contaminated fuel.
POSSIBLE FAULT
Mounting bolts loose.
Cutterblade bolt loose.
Cutterblade out of balance.
Bent crankshaft.
Undulating ground conditions
Cutterblade worn
Cutterblade out of balance
Wheels / roller damaged
Grass is wet
Cut height too low
Grassbag full
Airflow through the
grassbag is restricted
Engine speed too slow
Cut height too low
Wheels / roller damaged
Clutch out of adjustment
Drive belt damaged
Airflow through the
grassbag is restricted
Discharge chute blocked
Wet grass
Drain tank and fill with correct fuel.
REMEDY
Tighten bolts
Tighten bolt
Balance cutterblade
Consult your dealer
Change direction of travel
Sharpen the cutterblade
Balance the cutterblade
Inspect and replace as necessary
Mow dry grass
Increase cut height
Empty grassbag
Clean the grassbag
Set throttle to fast position
Increase cut height
Inspect and replace as necessary
Adjust clutch cable
Replace drive belt
Clean the grassbag
Remove blockage
Mow dry grass