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8-5 INSPECTION AND MAINTENANCE EVERY 300 HOURS
MAINTENACE ITEMS REASON / REMARKS
(1) Inspect the intake and exhaust valve clearance.
Adjust if necessary.
(1) Incorrect clearance can cause low power output
and engine malfunction.
8-6 INSPECTION AND MAINTENANCE EVERY 500 TO 600 HOURS (EVERY 6 MONTHS)
MAINTENACE ITEMS REASON / REMARKS
(1) Remove the cylinder head and remove any carbon.
(2) Disassemble and clean the carburetor.
(1) Carbon deposits can cause engine malfunction.
(2) A faulty carburetor can cause engine malfunction.
8-7 MAINTENANCE EVERY 1,000 HOURS (ANNUAL MAINTENANCE)
MAINTENACE ITEMS REASON / REMARKS
(1) Overhaul the engine. Clean and correct the engine
parts, replacing if necessary.
(2) Replace the piston rings.
(3) Replace the fuel hose.
(1) Dirty, misaligned or worn parts can cause low power
output and engine malfunction.
(2) Faulty piston rings can cause low output power and
engine malfunction.
(3) To prevent fuel leakage and attendant dangers.
8-8 ENGINE STORAGE
(1) Carry out the maintenance jobs described in step 8-1 above.
(2) Drain fuel from the fuel tank and carburetor float chamber.
(3) To prevent rust in the cylinder bore, inject oil through the spark plug hole, pull the recoil starter
knob gently 2 or 3 times and then put back the spark plug.
(4) Pull the recoil starter knob until the resistance is heavy. Leave it in that position.
(5) Clean the exterior of the engine with an oiled cloth. Place a plastic cover or similar over the
engine, and store the engine in a dry place.