Northern Lights NL673K, Руководство оператора

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ONL673 11/13
17
SP4. AIR CLEANER
1. Inspect air cleaner every 250 hours. In dusty
conditions, check more often.
2. Industrial sets: the element cannot be cleaned.
Replace it when necessary. Part number is:
NL673K, L, L2, L3 – #24-27301
4. NOTE: Make absolutely sure no impurities enter
the engine while changing the element. Do NOT
run the engine with the air cleaner removed.
SP5. V-BELTS
1. Check the tension and wear on the V-belt daily.
2. Use your thumb to press on the belt at the midpoint
between the fan pulley and alternator pulley. The
tension is correct if the belt can be depressed about
3/16 in. (5 mm).
3. If belt needs to be adjusted - pivot the alternator
(Figure 5)
at the alternator mounting bolt by:
1. Loosening the alternator tensioning arm bolt and
the alternator mounting bolt.
2. Then pivot the alternator at the mounting bolt
toward the engine left or right side as required.
3. Tighten the mounting bolt and the adjusting bolt.
4. Recheck belt tension after tightening bolts and
again after running the engine for five minutes at
low idle.
Servicing
Figure 6: Valve Adjustment
SP6. VALVE CLEARANCES
1. Adjust valve clearance every 1000 hours, or as needed.
2. Valve adjustments should be done after the cylinder
head bolts have been re-tightened. Engine should be
cold and NOT running.
3. Watch the valves while turning the engine over by
hand. Turn until the inlet valve starts to open and the
exhaust valve starts to close (the valves are rocking).
Then turn the crankshaft one more full turn and adjust
the clearance on both valves for this cylinder.
4. Loosen the lock nut and adjust the clearance between
the rocker arm and valve guide of both the intake and
exhaust valves with the adjustment screw (
Figure 6
).
Clearance on both intake and exhaust valves should be
0.008 in. (0.2 mm).
5. Repeat steps 3 and 4 for each cylinder. Each set of
valves must be adjusted individually.
6. Replace the rocker arm cover. Tighten cover nuts to
5 - 8 ft/lbs (0.8 - 2.3 kg/m).
Figure 5: Belt Tension