Hyundai HYBC3000 User Manual page 14

gap. Readjust if necessary. The correct gap is 0.6 mm. The spark plug should be replaced after
100 hours of operation or earlier if the electrodes are badly eroded.
5.6. Exhaust.
Only remove exhaust when the machine has sufficient time to cool down.
5.6.1. Remove the exhaust.
5.6.2. Clean excess carbon from the exhaust and silencer inlet.
5.6.3. Carry this out for every 100 hours of operation.
5.7. Cylinder (Engine cooling).
Do not operate engine with engine shroud or exhaust guard removed as this will
cause overheating and engine damage.
5.7.1. The engine is air cooled.
5.7.2. Air must circulate freely around engine and over cooling fins on cylinder head to prevent
overheating.
5.7.3. Every 100 hours of operation, or once a year (more often if conditions require);
5.7.3.1. Clean fins and external surfaces of engine of dust.
5.7.3.2. Also clean dirt and oil deposits which can contribute to improper cooling.
5.8. Shaft gearbox.
5.8.1. Check the gear case grease level about every 50
hours of operation
5.8.2. Grease level can be checked by removing the
grease filler plug on the side of the case.
5.8.3. If no grease can be seen on the flanks of the
gears, fill the transmission with a quality lithium
based multipurpose grease up to 3/4.
5.8.4. DO NOT completely fill the gearbox.
5.9. Blade.
Wear protective gloves when handling or performing maintenance on
the blade.
5.9.1. Use a sharp blade. A blunt blade is more likely to snag and thrust. Replace the fastening nut
if it is damaged and hard to tighten.
5.9.2. When replacing blade, purchase one recommended by manufacturer, with a 25.4mm [1
inch] hole.
5.9.3. When replacing blade, use appropriate tools.
5.9.4. When cutting edges become dull, re-sharpen or file as shown in Incorrect sharpening may
cause excessive vibration.
5.9.5. Discard blades that are bent, warped, cracked, broken or damaged in any way.
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