GB-12
eHT752S / eHT602D
8. Maintenance
(1) Bolt
(2) Plate
(3) Spacer
(4) Nut
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
TRIMMER
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.
•
You need not to adjust the gap between upper blade
and lower blade as this product is designed to have
optimal gap when it is properly set up.
IMPORTANT
When mounting the blade, make sure to fasten the
spacer, washer and bolt, then fasten the nut.
■
SHARPENING
Always keep the file or sharpener at an angle of 45° to
the blade, and:
• Always grind in the direction of the cutting edge;
• Note: files cut only in one direction; lift the file from
the blade when returning to start a new pass;
• Remove all burr from the edge of the blade with a slip
stone;
• Remove as little material as possible;
• Before refitting the sharpened blades, remove filings
and then apply grease.
Do not try to sharpen a damaged blade: change it or
take it to a Service dealer.
