Owner`s manual

NS3526
GB-11
G
B
WARNING
• Make sure that the engine has stopped and is cool
before performing any service to the machine. Con-
tact with hot muffler may result in a personal injury.
• Do not modify the sprayer or dismantle the engine.
• When replacing parts please use Zenoah original
parts or designated parts.
■ Air cleaner
• After every 25 hours of operation, please remove the
air cleaner cover and inspect the element. If it is too
dirty, wash it carefully in warm water containing a neu-
tral detergent, and return it to its original position af-
ter drying it thoroughly.
• If the element is distorted or damaged, please replace
it with a new one.
a. Element
b. Air cleaner cover
IMPORTANT
• If the air cleaner element is blocked, the efficiency of
the engine will be reduced. In addition, the engine
interior will suffer abnormal wear if operated without
the element or if continually operated with a distorted
or damaged element fitted.
■ Fuel filter
After every 25 hours of operation, empty the fuel tank,
detach the fuel filter from the tank, and remove all dirt. If
the filter is too clogged, please replace it with a new
one.
a. Fuel filter
IMPORTANT
• If the fuel filter is clogged, the engine speed may be
limited or speed fluctuations may occur.
• If the engine is operated without a fuel filter, dirt will
accumulate in the carburetor and cause it to malfunc-
tion.
■ Spark plug
WARNING
• Do not touch the spark plug with your bare hands
immediately after operation, as there is the risk of
burns due to high temperature.
• After every 50 hours of operation, detach the spark
plug and remove dirt from the electrodes with a wire
brush or similar.
• The correct electrode gap is 0.6 to 0.7mm.
10. Maintenance
Every Every Every
25 50 100
System/components Procedure
Before
hours hours hours
Note
use
after after after
fuel leaks, fuel spillage wipe out ✔
fuel tank, air filter, fuel filter inspect/clean ✔✔ replace, if necessary
see adjusting replace carburetor
idle speed adjuster ✔
idling speed if necessary
clean and readjust GAP: 0.6 to 0.7 mm (.025 in)
spark plug ✔
plug gap replace, if necessary
cylinder fins, intake air cooling vent clean ✔
muffler, cylinder exhaust port clean ✔
throttle lever, stop switch check operation ✔
screws/nuts/bolts tighten/replace ✔✔except adjusting screws
gear oil replace ✔
ENGINE
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