Troubleshooting - Honda UMS425E1 El Manual Del Propietario

MAINTENANCE SCHEDULE
Perform this maintenance at
every indicated month or
operating hour interval,
whichever comes first.
Item Intervention
Engine cooling fins Clean
Condition of cutting
attachment and Check
guard
Zone around head Clean
Operation of throttle
Check
trigger
Operation of Stop
Check
button
Idle/Clutch Check
Check
Air filter element
Clean
Air filter housing Clean
Zone around spark
Clean
plug
Check
Spark plug
Clean
Zone around
Clean
carburettor
Cables and
Check
connections
Fuel system Check
Fuel filter Check
Spring and clutch
Check
pads
Check
Idle speed
Adjust
Check
Engine oil
Replace
Fuel tank Clean
Valve clearance Adjust
Check /
Nuts and bolts
Tighten
(1) Clean more often in dusty environments.
(2) These operations should be performed by an authorized Honda dealer.
8 EN
Frequency
Every 3 Every 6
Each time
months or months or
used
25 hours 50 hours
(1)
(1)
Every 2 years (replace if necessary) (2)
(2)
Replace after 10 service hours and then
every 6 months or 50 service hours

TROUBLESHOOTING

Problem
Every year
Engine does not start.
or 100
hours
Starting difficult or loss of
power.
Uneven running.
(2)
Engine overheats.
(2)
(2)
(2)
Grass trimmer vibrates
excessively.
Probable cause
1. No fuel.
2. Start/Stop button is in Stop position.
3. Spark plug cord incorrectly attached
or disconnected.
4. Faulty spark plug or incorrect gap.
5. Engine flooded. Remove spark plug,
dry it with a cloth and reinstall it.
6. Fuel filter is dirty. Clean it.
1. Impurities in fuel tank.
2. Dirty air filter.
3. Water in fuel tank and in fuel.
4. Fuel tank cap vent and /or carburettor
clogged.
1. Faulty spark plug or incorrect gap.
2. Dirty air filter.
1. Spark plug gap incorrect.
2. Dirty air filter.
3. Engine cooling fins clogged.
4. Oil level too low.
5. Starter pulley fouled by grass cuttings,
etc.
1. Engine bolts loose.
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