Zenoah GZ50N Maintenance, AIR Filter, Fuel Filter, Spark Plug, Replacement Plug is a NGK CMR7H

GZ50N

6. Maintenance

			Every	Every	Every
System/components	Procedur	Before	25	50	100	Note
			hours	hours	hours
		use	after	after	after
fuel leaks, fuel spillage	wipe out
fuel tank, air filter, fuel filter	inspect/clean					replace, if necessary
idle adjusting screw	see adjusting					replace carburetor
	idling speed					if necessary
spark plug	clean and readjust					GAP: .025 in (0.6 ~ 0.7 mm)
	plug gap					replace, if necessary
cylinder fins, intake air cooling vent	clean
muffler, spark arrester, cylinder	clean
exhaust port

WARNING

•Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting head or hot muffler may result in a personal injury.

AIR FILTER

•The air filter, if clogged, will reduce the engine performance.

•Filter element : Check and clean the filter element in warm, soapy water as required. Dry completely before installing.

•Paper element : Check and clean the paper element by air blow as required.

•If the element is broken or shrunk, replace with a new one.

(2)(1)

(1)Filter element

(2)Paper element

FUEL FILTER

•When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage.

SPARK PLUG

•Starting failure and misfiring are often caused by a fouled spark plug. Clean the spark plug and check that the plug gap is in the correct range. For a re- placement plug, use the correct type specified by

ZENOAH.

0.6~0.7mm

(0.024~0.027in.)

•REPLACEMENT PLUG IS A NGK CMR7H.

IMPORTANT

•Note that using any spark plug other than those des- ignated may result in the engine failing to operate prop- erly or in the engine becoming overheated and dam- aged.

•To install the spark plug, first turn the plug until it is finger tight, then tighten it a quarter turn more with a socket wrench.

9.8~ 11.8 N.m.

TIGHTENING TORQUE: (87 ~ 104 in-lbs)

(1)

(1) Fuel filter

GB-6