Shindaiwa 68915-94310, EB8520 manual Every 10/15 Hours, Every 50 Hours, 139/150-Hour Maintenance

Maintenance

Every 10/15 Hours

CAUTION!

Never allow dirt or debris to enter the cylinder bore! Before removing the spark plug, thoroughly clean the spark plug and cylinder head area!

Allow the engine to cool before serv- icing the spark plug! Cylinder threads can be damaged by tightening or loos- ening the spark plug while the engine is hot!

1.Use the spark plug wrench to remove the spark plug.

2.Clean and adjust the spark plug gap to 0.6mm (0.024”). If the plug must be replaced, use a NGK CMR5H or equiva- lent type plug of the correct heat range.

3.Install the spark plug finger-tight in the cylinder head, then tighten it firmly with the spark plug wrench. If a torque wrench is available, torque the spark plug to 16.7-18.6 Nm (148-165 inch- pounds).

	Counter-clockwise
	to remove.
	Clean the spark
	plug and check
	the gap at the
0,6 - 0,7 mm	electrode.
(0.024 in.)
	NGK CMR5H

Figure 22

Every 50 Hours

(more frequently if reduced performance is noted)

■■INSPECTION Inspect the entire blower and tubes for damage, includ- ing loose or missing components, and repair as necessary.

■■SPARK PLUG Replace the spark plug with a NGK CMR5H (or equivalent), gapped to 0.6 mm (0.024”).

■■FUEL FILTER Use a hooked wire to extract the fuel filter from inside the fuel tank.

Hooked

Wire

Fuel

Filter

Fuel Tank

Figure 23



CAUTION!

Make sure you do not pierce the fuel line with the end of the hooked wire. The line is delicate and can be dam- aged easily.

■■Inspect the filter element for signs of contamination from debris. A contami- nated fuel filter should be replaced with a new Shindaiwa replacement element. Before reinstalling the filter, inspect the condition of the fuel line. If you note damage or deterioration, the blower should be removed from service until it can be inspected by a Shindaiwa- trained service technician.

■■COOLING SYSTEM Use a wood or plastic scraper and a soft brush to remove dirt and debris from the cylin- der fins and crankcase.

139/150-Hour Maintenance

Maintenance after first 139-hours,	■■Replace the spark plug annually: Use
then every 150-hours thereafter.	onlyNGK CMR5H or equivalent resis-
■■Combustion chamber should be decar-	tor type spark plug of the correct heat
bonized, and the valve clearance should	range. Set spark plug electrode gap to
	0.6 mm (0.024 inch).
be adjusted. It is highly recommended
that this is done by a Shindaiwa-trained
service technician.

NOTE:

The NGK CMR5H also meets the require- ments for electro magnetic compliance (EMC).

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