Fan Belt; Spark Plugs - Lincoln Electric CLASSIC I SVM134-A Service Manual

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FAN BELT: Fan belts tend to loosen after the first 50
hours of operation. If the fan belt is loose, the engine
can overheat and the battery can lose its charge.
Check belt tightness by pressing on the belt midway
between the pulleys. The belt should deflect no more
than 13 mm (0.5 in.). See Figure D.3.
To adjust the fan belt, loosen the alternator bolts, then
push the alternator outward until the correct belt ten-
sion is achieved. Retighten the alternator bolts. See
Figure D.3.
FIGURE D.3 – TIGHTENING THE FAN BELT
MAINTENANCE
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4
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CLASSIC I
SPARK PLUGS: Clean or replace the spark plugs
after every 250 hours of operation as follows.
1. Before removing the plugs, clean the base area to
keep dirt from falling into the engine through the
plug hole.
2. Remove and inspect the plugs. Plugs showing
signs of fouling or electrode wear should be
replaced. Do not blast the spark plugs clean with
an abrasive cleaning device. Clean the plugs by
scraping or by using a wire brush. Wash the plugs
with a commercial solvent.
3. After cleaning or when installing a new spark plug,
set the terminal gap with a feeler gauge or gapping
tool. See Figure D.4.
Gap Specifications: 0.032 inch (.8 mm).
4. Tighten plugs to 30 ft-lbs (40 N·m).
FIGURE D.4 – SET SPARK PLUG GAP
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