Maintenance - Zenoah BCZ4000DW Owner's Manual

8. Operation
5. Try to control the cutting motion with the hip rather
than placing the full workload on the arm and hands.
6. Take precautions to avoid wire, grass and dead, dry,
long-stem weeds from wrapping around the head
shaft. Such materials can stall the head and cause
the clutch to slip, resulting in damage to the clutch
system if repeated frequently.
ADJUSTING THE LINE LENGTH
• Your brush cutter is equipped with a semi- auto type
nylon line head that allows the operator to advance
the line without stopping the engine. When the line
becomes short, lightly tap the head on the ground
while running the engine at full throttle.
• Each time the head is bumped, the line advances
about 25 mm. For better effect, tap the head on bear
ground or hard soil. Avoid bumping in thick, tall grass
as the engine may stall by overload.
• Make the right and left lines the same length when
using the nylon line head.
(Be sure to install the genuine Zenoah cutting attach-
ment guard when using the nylon line head.)
• If the lengths of the right and left lines are different,
the balance of the nylon line head will be disrupted,
resulting in increased vibration and product damage.

9. Maintenance

System/components
fuel leaks, fuel spillage
fuel tank, air filter, fuel filter
idle speed adjuster
spark plug
intake air cooling vent
throttle trigger, stop switch
cutting parts
angle transmission
screws/nuts/bolts
cutting attachment guard
• If you feel a vibration increase or shaft tube shaking
-->Make them the same length.
-->Make sure to install it securely.
-->Replace the damaged part.
• If vibration or shaking persists even after repairing, or
• Never continue to operate the unit when vibration or
Before
Procedure
use
✔
wipe out
✔
inspect/clean
see adjusting
✔
idling speed
clean and readjust
plug gap
clean
✔
check operation
replace if
✔
something's wrong
grease
✔
tighten/replace
✔
make sure to attach
BCZ4000DL / BCZ4000DW / BCZ4200CL
while using the nylon line head, immediately stop
operation, check the following items, and correct any
problems.
The lengths of the right and left lines are significantly
different.
The cover is removed.
There is a crack or damage outside.
if you cannot identify the cause of abnormality, con-
tact your local authorized Zenoah dealer for repair.
shaking of the shaft tube persists.
Every Every Every
25 50 100
hours hours hours
after after after
✔
replace, if necessary
replace carburetor
if necessary
GAP: 0.9 ~ 1.0 mm
✔
replace, if necessary
✔
✔
✔
except adjusting screws
G
B
Note
GB-15