GB-13
G
B
PSZ2600
SPARK PLUG
•
Starting failure and misfiring 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 replacement plug, use the
correct type specified by ZENOAH.
•REPLACEMENT PLUG IS A NGK CMR7A.
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 tur n the plug until it is finger tight, then
tighten it a quarter turn more with a socket wrench.
MUFFLER
WARNING
•
Inspect periodically, the muffler for loose fasteners, any damage
or corrosion. If any sign of exhaust leakage is found, stop using
the machine and have it repaired immediately.
•
Note that failing to do so may result in the engine catch-
ing on fire.
WARNING
•
Make sure that the engine has stopped and is cool before per-
forming any service to the machine. Contact with moving cut-
ting head or hot muffler may result in a personal injury.
AIR FILTER
•The air filter, if clogged, will reduce the engine performance.
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)
(1) Air filter
FUEL FILTER
•When the engine runs short of fuel supply, check the fuel
cap and the fuel filter for blockage.
(1)
(1) Fuel filter
9. Maintenance
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 (p. 11) ✔if necessary
clean and readjust GAP: .025 in (0.6 ~ 0.7 mm)
spark plug plug gap ✔replace, if necessary
cylinder fins, intake air cooling vent
clean ✔
muffler, spark arrester, clean,
cylinder exhaust port
remove piled up carbon
✔
throttle lever, ignition switch check operation ✔
gear case grease ✔
screws/nuts/bolts tighten/replace ✔✔not adjusting screws
oiling port clean ✔✔
guide bar clean ✔
sprocket inspect/replace ✔
saw chain inspect/sharp ✔
ENGINE
SHAFT
CUTTING UNIT
0.6 ~ 0.7 mm
TIGHTENING TORQUE: 87 ~ 104 in-lbs
(9.8 ~ 11.8 N.m.)