GB-12
PSJ2310
9. Maintenance
System/components
Procedure
Before
use
Every
25
hours
after
Every
50
hours
after
Every
100
hours
after
Note
ENGINE
fuel leaks, fuel spillage
wipe out
✔
fuel tank, air filter, fuel filter
inspect/clean
✔
✔
replace, if necessary
idle adjusting screw
see ADJUSTING IDLING
SPEED (p.11)
✔
replace carburetor
if necessary
spark plug
clean and readjust
electrode gap
✔
GAP: 0.6 - 0.7 mm
replace, if necessary
cylinder fins, intake air
cooling vent
clean
✔
muffler, spark arrester,
cylinder exhaust port
clean,
remove piled up carbon
✔
SHAFT
throttle trigger, stop switch
check operation
✔
screws/nuts/bolts
tighten/replace
✔
✔
not adjusting screws
CUTTING UNIT
oiling port
clean
✔
guide bar
clean
✔
sprocket
inspect/replace
✔
saw chain
inspect/replace
✔
AIR FILTER
• The air filter, if clogged, will reduce the engine per-
formance. Check and clean the filter element in
warm, soapy water as required. Dry completely
before installing. If the element is broken or shrunk,
replace with a new one.
(1) Air filter
FUEL FILTER
• When the engine runs short of fuel supply, check the
fuel cap and the fuel filter for blockage.
(1) Fuel filter
SPARK PLUG
• Starting failure and mis-firing are often caused by a
fouled spark plug. Clean the spark plug and check
that the plug gap is in the correct range. For a re-
placement plug, use the correct type specified by
ZENOAH.
0.6 – 0.7mm
• REPLACEMENT PLUG IS A NGK BPMR7A.
IMPORTANT
• Note that using any spark plug other than those
designated may result in the engine failing to operate
properly or in the engine becoming overheated and
damaged.
• To install the spark plug, first turn the plug until it is
finger tight, then tighten it a quarter turn more with a
socket wrench.
TIGHTENING TORQuE:
14.7 - 21.6 N.m
(150 - 220 kg-cm)
01-PSJ2310_GB_209＿三.indd 12
12.9.12 1:09:31 PM
