8 EN
MAINTENANCE SCHEDULE
(1) Clean more often in dusty environments.
(2) These operations should be performed by an authorized Honda dealer.
TROUBLESHOOTING
Perform this maintenance at
every indicated month or
operating hour interval,
whichever comes first.
Frequency
Each time
used
Every 3
months or
25 hours
Every 6
months or
50 hours
Every year
or 100
hours
Item
Intervention
Engine cooling fins
Clean
Condition of cutting
attachment and
guard
Check
Zone around head
Clean
Operation of throttle
trigger
Check
Operation of Stop
button
Check
Idle/Clutch
Check
Air filter element
Check
Clean
(1)
Air filter housing
Clean
(1)
Zone around spark
plug
Clean
Spark plug
Check
Clean
Zone around
carburettor
Clean
Cables and
connections
Check
Fuel system
Check
Every 2 years (replace if necessary) (2)
Fuel filter
Check
(2)
Spring and clutch
pads
Check
(2)
Idle speed
Check
(2)
Adjust
(2)
Engine oil
Check
Replace
Replace after 10 service hours and then
every 6 months or 50 service hours
Fuel tank
Clean
Valve clearance
Adjust
(2)
Nuts and bolts
Check /
Tighten
Problem
Probable cause
Page
Engine does not start.
1. No fuel.
4
2. Start/Stop button is in Stop position.
5
3. Spark plug cord incorrectly attached
or disconnected.
7
4. Faulty spark plug or incorrect gap.
7
5. Engine flooded. Remove spark plug,
dry it with a cloth and reinstall it.
7
6. Fuel filter is dirty. Clean it.
-
Starting difficult or loss of
power.
1. Impurities in fuel tank.
4
2. Dirty air filter.
7
3. Water in fuel tank and in fuel.
-
4. Fuel tank cap vent and /or carburettor
clogged.
-
Uneven running.
1. Faulty spark plug or incorrect gap.
7
2. Dirty air filter.
7
Engine overheats.
1. Spark plug gap incorrect.
7
2. Dirty air filter.
7
3. Engine cooling fins clogged.
-
4. Oil level too low.
5
5. Starter pulley fouled by grass cuttings,
etc.
-
Grass trimmer vibrates
excessively.
1. Engine bolts loose.
-
Summary of Contents for UMS425E1
Page 64: ...RCS ORL ANS B 501 736 565...
