Miller Electric 251 NT manual Maintenance and Troubleshooting

SECTION 7 – MAINTENANCE AND TROUBLESHOOTING

7-1. Routine Maintenance

	Y Stop engine before maintaining.
Recycle	. See Engine Manual and Maintenance Label. Ser-
	vice more often if used in severe conditions.
engine
fluids.	* To be done by Factory Authorized Service Agent.

8 h

Check fluid levels. See Section 4-2.

OIL Full

Wipe up spills.

20 h

25 h

Check and clean spark arrestor screen. See Section 7-4.

Service air filter wrapper (foam element). See Section 7-3.

	50 h
Clean cooling system. See	Clean and
engine manual.	tighten weld
	terminals.

100 h

Change oil. See Section 7-5 and maintenance label.

Change oil filter. See Section 7-5 and maintenance label.

Service air filter element. See Section 7-3.

Clean and tighten battery connections.

Check valve clearance.*

Check spark plugs.

Repair or replace cracked cables.

200 h

Replace fuel filter. See Section 7-5.

Replace unreadable labels.

500 h

Service welding generator brushes and slip rings. Service more often in dirty conditions.*

1000 h

		Blow	out or
Remove cylinder	Clean crankcase	vacuum inside.		OR
		During	heavy
head deposits.*	breather valve.
		service, clean

monthly.

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