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CC535
V-Belts (If So Equipped)
!
WARNING
Avoid injury caused by hands or clothing being caught between belts and pulleys. Make sure engine is
shut off and ignition key is removed before inspecting belts.
All drive belts must be periodically inspected for condition and tension.
Perform the following inspections of alternator drive belt and seawater pickup pump drive belt.
If any drive belts need replacement or tension needs adjustment see your Authorized MerCruiser Dealer.
1 Alternator Drive Belt - Inspect drive belt for excessive wear or damage.
Check belt tension by depressing upper strand of belt at point shown. Belt should depress 1/2 in. (13mm)
2 Seawater Pump Drive Belt - Inspect drive belt for excessive wear or damage.
Check belt tension by depressing upper strand of belt at point shown. Belt should depress 1/4 in. (6mm).
CC520
Serpentine Drive Belt (If So Equipped)
!
WARNING
Avoid injury caused by hands or clothing being caught between belts and pulleys. Make sure engine is
shut off and ignition key is removed before inspecting belts.
Belt must be periodically inspected for condition and tension.
NOTE: Belt deflection is to be measured on the belt at the location that has the longest distance between two
pulleys. Normally this location is between the seawater and belt adjustment idler pulleys.
3 Check the tension of the serpentine drive belt. If there is more than 1/4 in. deflection on the drive belt, see
your Authorized MerCruiser Dealer to have the tension of the drive belt adjusted.
If any drive belt needs replacement or tension needs adjustment, see your Authorized MerCruiser Dealer.
A Idler Pulley
B Circulating Pump Pulley
C Crankshaft Pulley
D Alternator Pulley
E Seawater Pump Pulley
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