GB-14
BK2650DL
9. Maintenance
9. Maintenance
(1) Fuel filter
(1) Stopper
(2) Flexible liner
(3) Gear case
(4) Inner shaft
(1) Air filter
WARNING
•
Make sure that the engine has stopped and is cool
before performing any service to the machine.
Contact with moving cutting head or hot muffler
may result in a personal injury.
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.
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
KOMATSU ZENOAH.
•
REPLACEMENT PLUG IS A 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.
MUFFLER
WARNING
• Inspect periodically, the muffler for loose fasten-
ers, any damage or corrosion. If any sign of ex-
haust leakage is found, stop using the machine
and have it repaired immediately.
• Note that failing to do so may result in the engine
catching on fire.
GEAR CASE
• The reduction gears are lubricated by multipurpose,
lithium-based grease in the gear case. Supply new
grease every 25 hours of use or more often depend-
ing on the job condition.
• (For the engine)
Remove the bolt of the grease nipple and the bolt
opposite side of the grease nipple. Install new grease
into the grease nipple to arrange for old grease to
exit from the opposite side.
• (For the cutting head)
Remove the cutter holders before installing new
grease to arrange for old grease to exit.
FLEXIBLE SHAFT
1. Pull out the flexible liner while pulling the stopper up-
ward.
2. Pull out the inner shaft from the clutch housing side
hole, apply Zenoah Guine Power Grease (Z3180-
91250) or lithium-based heat-resistant grease (#2) to
the shaft, and insert the shaft back into the liner.
0.6-0.7 mm
TIGHTENING TORQUE:
15-220 kgf-cm
(15.3-22.4 N.m.)
