Hayter Mowers Harrier 48 491G - Manual (Page 16)

16 17
TROUBLE SHOOTING
PROBLEM CAUSES CORRECTIVE ACTION
Engine will not turn
over
1. Engine stop lever released
2. Incorrect oil level
3. Obstruction under deck
4. Battery discharged (if fitted)
1. Operate engine stop lever
2. Check oil level
3. Remove obstruction
4. Charge battery
Engine smokes
1. Excess oil
2. Air cleaner cartridge oil
soaked or blocked
1. Check oil level
2. Service air cleaner
Engine runs then stops 1. Fuel starvation
2. Fuel cap vent blocked
1. Fill fuel tank
2. Clean fuel cap vent
Engine will not start
1. Engine under load
2. Incorrect/contaminated fuel
3. Spark plug lead disconnected
4. Engine brake not released
5. Faulty spark plug
6. Battery discharged (if fitted)
7. Wiring fault
1. Raise height of cut
2. Drain tank and fill with correct
fuel
3. Connect spark plug lead
4. Operate engine brake lever
5. Clean and adjust the gap or
replace
6. Charge battery
7. Check wiring
Engine runs rough
1. Spark plug lead becoming
disconnected in use
2. Faulty spark plug
3. Air cleaner blocked
4. Incorrect/contaminated fuel
1. Connect spark plug lead
2. Clean and adjust gap or replace
3. Service air cleaner
4. Drain tank and fill with correct
fuel
Engine vibrates exces-
sively
1. Mounting bolt loose
2. Cutterblade bolt loose
3. Cutterblade out of balance
4. Bent Crankshaft
1. Tighten bolts
2. Tighten bolt
3. Balance cutterblade
4. Consult your dealer
Uneven cut
1. Undulating ground conditions
2. Cutterblade worn
3. Cutterblade out of balance
4. Wheels/roller damaged
1. Change direction of travel
2. Sharpen cutterblade
3. Balance the cutterblade
4. Insect & replace as necessary
PROBLEM CAUSES CORRECTIVE ACTION
Discharge chute blocks 1. Grass is wet
2. Cut height is too low
3. Grassbag full
4. Airflow through the grassbag
is restricted
1. Mow dry grass
2. Increase cut height
3. Empty grassbag
4. Clean the grassbag
Mower is hard to push 1. Cut height too low
2. Wheels/roller damaged
1. Increase cut height
2. Inspect and replace as neces-
sary
Mower will not self
propel
1. Clutch out of adjustment
2. Drive belt damaged
1. Adjust clutch cable
2. Replace drive belt
Poor grass collection 1. Airflow through the grassbag
is restricted
2. Discharge chute blocked
3. Wet grass
4. Grassbag full
1. Clean the grassbag
2. Remove blockage
3. Mow in dryer conditions
4. Empty grassbag
Cutterblade drive will
not engage/disengage
1. Engine stop lever not fully
forward
1. Push fully forward disengage