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8. MAINTENANCE AND STORAGE
The maintenance jobs described below apply to correct use of the engine under normal
conditions.
The maintenance intervals mentioned in this section are not a guarantee that no maintenance is
required during those intervals.
For example, when the engine is used in dusty conditions, the air cleaner should be cleaned every
day, rather than every 100 hours.
8-1 DAILY MAINTENANCE (EVERY 8 HOURS OF USE)
MAINTENACE ITEMS REASON / REMARKS
(1) Clean dust from engine.
(2) Check for fuel leakage. Tighten or replace parts,
if necessary.
(3) Check all parts are securely fastened. Tighten,
if necessary.
(4) Check oil level and add up to full mark.
(5) Check that the air cleaner element is clean.
Clean or replace, if necessary.
(1) Dust can impair operation of various parts.
Governor linkage is especially sensitive to dust.
(2) Uneconomical and dangerous.
(3) Looseness can result in vibration and accidents.
(4) Running the engine with insufficient oil can result in
serious problems, including engine seizure.
(5) A clogged air cleaner can cause power loss and
malfunction.
8-2 INSPECTION AND MAINTENANCE AFTER THE FIRST 20 HOURS
MAINTENACE ITEMS REASON / REMARKS
(1) Change the crankcase oil. (1) Sludge is deposited during running-in.
8-3 INSPECTION AND MAINTENANCE EVERY 100 HOURS (EVERY 10 DAYS)
MAINTENACE ITEMS REASON / REMARKS
(1) Change the crankcase oil.
(2) Clean the air cleaner and fuel tank outlet filter.
(3) Inspect the spark plug. Clean with gasoline or polish
with sandpaper if dirty.
(1) Contaminated oil quickens wear.
(2) A clogged air cleaner and fuel filter can cause engine
malfunction.
(3) A faulty spark plug can cause low power output and
poor starting performance.
8-4 INSPECTION AND MAINTENANCE EVERY 100 TO 200 HOURS (EVERY MONTH)
MAINTENACE ITEMS REASON / REMARKS
(1) Clean the fuel strainer and fuel tank.
(2) Change the air cleaner element and fuel tank filter.
(1) Contaminated fuel can cause engine malfunction.
(2) A clogged air cleaner and fuel filter can cause engine
malfunction.