GB-12
HT2310 / CHT2310
WARNING
•
Make sure that the engine has stopped and is cool
before performing any service to the machine. Con-
tact with moving cutting head or hot muffler may
result in a personal injury.
BLADE
･
Check the blade and the fasteners for looseness,
cracking, or bending.
･
Check the cutting edges and reform with a flat file.
Point :
1. Keep the end corner sharp.
2. Round the root of the edge.
3. Do not use water when using a grinder.
SAFETY LOCK
WARNING
･
Stop operation when the safety lock is de-
fective.
･
Safety lock is the device not to accelerate the throttle
lever without intention. While pushing the safety lock,
you can accelerate the throttle lever.
1. Check if the throttle lever does not move when you do
not push the safety lock.
2. Check if the throttle lever moves when you grasp or
release it while pushing the safety lock.
3. Check if the safety lock returns to its original position
when you release your hand from safety lock.
･
If you find any defects at the checks above, contact
your nearest servicing dealer for repair.
8. Maintenance
(1) Safety lock
Every Every Every
25
50
100
System/components
Procedure
Before
hours hours hours Note
use
after
after
after
fuel leaks, fuel spillage
wipe out
✔
fuel tank, air filter, fuel filter
inspect/clean
✔
✔
replace, if necessary
see adjusting
replace carburetor
idle adjusting screw
✔
idling speed
if necessary
clean and readjust
GAP: 0.6 ~ 0.7 mm
spark plug
✔
plug gap
replace, if necessary
cylinder fins, intake air cooling vent
clean
✔
muffler, spark arrester, cylinder exhaust port
clean
✔
throttle lever, ignition switch
check operation
✔
replace if
cutting parts
✔
something’s wrong
gear case
grease
✔
screws/nuts/bolts
tighten/replace
✔
✔
not adjusting screws
debris guard
make sure to attach
✔
ENGINE
SHAFT
