GB-13
G
B
HT2310 / CHT2310
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 re-
placement plug, use the correct type specified by
ZENOAH.
•
REPLACEMENT PLUG IS A CHAMPION RCJ6Y or
NGK BPMR7A.
IMPORTANT
•
Note that using any spark plug other than those des-
ignated may result in the engine failing to operate prop-
erly or in the engine becoming overheated and dam-
aged.
•
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.
GEAR CASE
･
Supply multi-purpose grease at every 25 hours of use.
1. Use a grease pump.
2. Feed grease until it comes out of the base of
blades(a).
AIR FILTER
• The air filter, if clogged, will reduce the engine perfor-
mance. Check and clean the filter element in warm,
soapy water as required. Dry completely before in-
stalling. If the element is broken or shrunk, replace
with a new one.
FUEL FILTER
• When the engine runs short of fuel supply, check the
fuel cap and the fuel filter for blockage.
WAY OF THE COOLING AIR
･
This engine is air-cooled. Dust clogging between the
inlet port of the cooling air and cylinder fins will cause
overheating of the engine. Periodically check and
clean the cylinder fins after removing the air cleaner
and the cylinder cover.
8. Maintenance
0.6~0.7 mm
TIGHTENING TORQUE:
14.7–21.5 N·m
