15
14
CUL
TIV
A
TOR
EDGER
PRUNING SA
W
HEDGE TRIMMER
BRUSHCUTTER
Inspecting the cutting blade
When the cutting edge becomes dull, the cutting blade will fail to
cut cleanly and can exhibit blade thrust during operation. Using a
broken, cracked or deformed blade carries a risk of blade fragments
flying off during operation.
Inspection timing - Before and after operation
1. Check that the cutting blade (N) as been correctly installed and
that the blade clamping nut is not loose.
(See
[5-2] Mounting the cutting blade or nylon trimmer
.)
2. 2. Check the cutting blade (N) or excessive wear, breakage,
cracks or deformation. If any such problems are found, replace
the blade with a new one. Never use a damaged blade.
Gear Case
•
Remove the bolt A on the gear case Fig 42, top up the gearbox
using Lithium grease and refit the bolt.
Long-term Storage
If the machine will not be started for 30 days or longer, maintain and
store the machine as follows:
1. Remove debris from the machine. Check the machine for
damage and loose screws. Correct any problems so that the
machine can be restarted later without a problem.
2. Drain the fuel from the fuel tank. Start the engine and run it
until no fuel remains in the carburetor. (The engine will stop
automatically when no fuel remains.)
3. Allow the engine to cool. Remove the spark plug and squirt a
small amount of fresh engine oil into the spark plug hole. Slowly
pull the recoil starter cord two or three times.
4. Reinstall the spark plug. Slowly pull the recoil starter cord and
release it when you feel resistance. (This closes the intake and
exhaust ports.)
5. Lightly wipe the external surface of the engine with cloth. Then,
store the machine in a dry dust-free location where no open fire
is present.
6. Before storing the machine, clean the cutting blade and check
for any irregularities. Install the blade cover provided as a
standard accessory.
7. Store the drained fuel in a safe container and keep it in a cool,
dry room.
CAUTION
Do not store the machine for a prolonged period with fuel remaining
in the fuel tank. Impurities in the fuel will deteriorate, adversely
affecting the carburetor and fuel filter and possibly causing an
engine malfunction. Always fully drain the fuel before storing the
machine.
Inspection and Maintenance Checklist
Checkpoints
Before and after
operation
Every 20 Hours
of operation
Every 50 hours of
operation
Every 100 hours
of operation
Engine
Loose screws, nuts and
bolts
Inspect
○
Fuel leaks
Inspect
○
Air cleaner
Inspect
○
Clean
○
*1
Spark plug
Inspect and
adjust
○
Replace
○
Engine cooling fins
Inspect and clean
○
Muffler / exhaust port
Inspect and clean
○
Clutch shoe
Inspect
○
*2
Fuel filter
Clean
○
Fuel tank
Clean
○
Carburetor
Inspect
○
Entire
Unit
Loose screws, nuts and
bolts
Inspect
○
Broken, worn or missing
parts
Inspect
○
Breakage, wear, cracks or
deformation f the cutting
blade or nylon trimmer;
loose clamping nuts
Inspect
○
Grease in angle
transmission
Replenish grease
○
*1 When using the machine in a dusty location, clean the air cleaner after every 10 hours of operation.
*2 Clutch shoe replacement requires an appropriate tool kit and special maintenance techniques. We recommend that you ask your dealer
to replace the clutch.
Troubleshooting
This troubleshooting section describes possible causes and remedies for problems you might encounter during operation of the machine.
If a problem persists after you have attempted the solutions recommended in this section, contact your dealer for technical assistance. Do
not attempt to disassemble the machine.
Engine does not start
Typical cause
Solution
•
The stop switch is in the STOP position.
•
The fuel has deteriorated or is of poor quality.
•
The carburetor is flooded with excess fuel.
•
The muffler exhaust pipe opening is blocked.
•
The spark plug electrodes are fouled.
•
Set the stop switch to the START position.
•
Use fresh fuel of the correct grade.
•
Turn the choke lever to the position opposite the START
position. Pull the recoil starter cord repeatedly.
•
Using a screwdriver or other appropriate tool, remove the
deposited carbon from the muffler.
•
Clean the electrodes or replace the spark plug.
Engine does not accelerate
Typical cause
Solution
•
The fuel has deteriorated or is of poor quality.
•
The muffler exhaust pipe opening is blocked.
•
Use fresh fuel of the correct grade.
•
Using a screwdriver or other appropriate tool, remove the
deposited carbon from the muffler
Engine stalls when the throttle trigger is released
Typical cause
Solution
•
The idle speed is too low.
•
Adjust the idle speed with the idle-speed adjuster on the
carburetor
Cutting blade continues to rotate after the throttle trigger is released
Typical cause
Solution
•
The idle speed is too high.
•
The throttle linkage has little or no play.
•
Adjust the idle speed with the idle-speed adjuster on the
carburetor.
•
Adjust the play on the throttle linkage.
Engine speed fluctuates
Typical cause
Solution
•
The fuel filter is clogged.
•
Clean or replace the fuel filter.
