Zenoah YM415FW - Manual (Page 6)

0.6 — 0.7mm
F21a
F20
F21
Maintenance
Before cleaning, inspecting, or repairing the unit, make sure that the
engine has stopped and is cool.
■ BLADE
• Check the blade and the fasteners for looseness, cracking, or bending.
• Check the cutting edges and reform with a flat file.
Point (F18):
1. Keep the end corner sharp.
2. Round the root of the edge.
3. Do not use water when using a grinder.
■ AIR CLEANER
• 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. (F19)
(1) Cover (2) Element (3) Screen (4) Body
A clogged air filter may increase fuel consumption while cutting down the engine power.
And operate the brushcutter without the air filter or with a deformed filter element will
quickly ruin the engine.
■ FUEL FILTER
• Take the filter out of the fueling port using a small wire hook. Disconnect the filter
assembly from the fuel pipe and unhook the retainer to disassemble it. Clean the
components with gasoline. (F20)
(1) Strainer (2) Fuel tank
A clogged fuel filter may cause poor acceleration of the engine.
■ SPARK PLUG
• Starting failure and mis-firing are often caused by a fouled spark plug. Periodically
clean the spark plug and replace with a new one as required. (F21a)
• REPLACEMENT PLUG IS A Champion CJ-6Y.
■ GEAR CASE
• Supply multi-purpose grease at every 25 hours of use.
• Remove the cutter holders to arrange for old grease to exit. (F21)
(1) Inner holder (2) Plug
■ MAINTENANCE BEFORE STORAGE
• Old fuel left in the carburetor may cause starting failure. When a series of operation
finished, make sure to empty the fuel tank and drain the carburetor.
• Check all parts and the functions. If the failured or damaged parts have been found,
replace them with new ones.
IMPORTANT
IMPORTANT
IMPORTANT
WARNING
F19
F18
6