Zenoah BC3500DWM - Manual (Page 16)

GB-16
BC3500DLM / BC3500DWM
9. Maintenance
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 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 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.
0.6 - 0.7 mm
• 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)
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 in the reperir
specialty store.
• Note that failing to do so may result in the engine
catching on fire.
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 speed adjuster
see adjusting idling
speed (p. 11)
✔
replace carburetor
if necessary
spark plug
clean and readjust
plug gap
✔
GAP: .025 in (0.6 ~ 0.7 mm)
replace, if necessary
intake air cooling vent clean ✔
SHAFT
throttle trigger, stop switch check operation ✔
cutting parts
replace if
something’s wrong
✔
angle transmission grease ✔
screws/nuts/bolts tighten/replace ✔ ✔ not adjusting screws
cutting attachment guard make sure to attach ✔