12
8. "HOW-TO" MAINTENANCE
(See Fig. )
CAUTION
Make sure the engine is stopped before
starting any maintenance, servicing or
repair.
NOTE
It is recommended to use ear protection when
performing operation, maintenance and repair of
the generator set.
1. ENGINE OIL CHANGE (See Fig. -①)
❶ OIL DRAIN PLUG
■ Change engine oil every 50 hours.
(For new engine, change oil after 20 hours.)
(a) Drain oil by removing the drain plug and the
oil fi ller cap while the engine is warm.
(b) Reinstall the drain plug and fi ll the engine
with oil until it reaches the upper level on the
oil fi ller cap.
■ Use fresh and high quality lubricating oil to
the specifi ed level as directed on page 6.
If contaminated or deteriorated oil is used or
the quantity of the engine oil is not suffi cient,
the engine damage will result and its life will
be greatly shortened.
2. SERVICING THE AIR CLEANER
(See Fig. -②)
Maintaining an air cleaner in proper condition is
very important.Dirt induced through improperly
installed, improperly serviced or inadequate
elements damages and wears out engines. Keep
the element always clean.
(a) Unhook the cover and remove the cleaner
element.
❶ ELEMENT ❷ AIR CLEANER COVER
(b) Paper element: Clean by tapping gently to
remove dirt and blow off dust. Never use oil.
Clean paper element every 50 hours of
operation, and replace element every 200
hours or once a year.
(c) Urethane form : Wash the element with fresh
water. Squeeze out the water then dry the
element. (Do not twist.)
3. CLEANING AND ADJUSTING
SPARK PLUG (See Fig. -③, ④ )
❶ SPARK PLUG
❷ PLUG WRENCH
(a) If the plug is contaminated with carbon, remove
it using a plug cleaner or wire brush.
(b) Adjust the electrode gap to 0.6 to 0.7 mm
Spark plug : BMR4A(NGK)
When replacing with new spark plug, use the
above-recommended one.
If not available by all means, make sure to replace
with equivalent one of resistance type.
4. SPARK ARRESTER
The spark arrester must be cleaned regularly to
keep it functioning as designed.
A clogged spark arrester :
■
Prevents the fl ow of exhaust gas
■
Reduces engine output
■
Increases fuel consumption
■
Makes starting diffi cult
CAUTION
If the engine has been running, the muffl er
and the spark arrester will be very hot.
Allow the muffl er to cool before cleaning
the spark arrester.
How to remove the spark arrester
(a) Remove the fl ange bolts from the muffl er cover
and remove the muffl er cover.
(c) Remove the special screw from the spark
arrester and remove the spark arrester from the
muffl er.
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