Yanmar 6LPA-STP2 Operation Manual page 73

Checking and Adjusting the
Alternator V-Belt Tension
( 1 )
( 2 )
Figure 15
NOTICE: NEVER get any oil on the
belt(s). Oil on the belt causes slipping
and stretching. Replace the belt if it is
damaged. NEVER over-tighten the
belt(s). Engine damage will result.
1. Check the belt by pushing on the middle
of the belt (Figure 15, (1)) with your
finger.
With proper tension, the belt should
deflect 8 - 10 mm (approximately
3/8 in.).
2. Loosen the alternator bolt
(Figure 15, (2)) and move the
alternator to adjust the V-belt tension.
3. Replace the V-belt if required.
Alternator V-Belt
Part Number
119775–77260
6LPA Series Operation Manual
Checking and Adjusting the Power
Steering Oil Pump Belt (6LPA-STZP2
Models)
NOTICE: NEVER get any oil on the
belt(s). Oil on the belt causes slipping
and stretching. Replace the belt if it is
damaged. NEVER over-tighten the
belt(s). Engine damage will result.
(1)
0004903
1.
2.
3.
© 2007 Yanmar Marine International
PERIODIC MAINTENANCE
(2)
Figure 16
Check the belt by pushing on the middle
of the belt (Figure 16, (3)) with your
finger.
With proper tension, the belt should
deflect 8 - 10 mm (approximately
3/8 in.) (Figure 16, (4)).
Loosen the power steering pump bolt
(Figure 16, (2)) and move the oil pump
(Figure 16, (1)) to adjust the belt
tension.
Replace the belt if required.
Power Steering Oil Pump Belt Part
Number (6LPA-STZP2 only)
119787–26540
(3)
(4)
0004913
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