55
CH43
A
A
B
C
D
E
1
77640
A
A
E
C
B
D
1
CC992
Serpentine Drive Belt
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.
1 Check the tension of the serpentine drive belt. If there is more than 1/4 in. (6 mm) deflection, the tension
needs adjustment.
See your Authorized Mercury MerCruiser Dealer to have the tension adjusted or belt replaced.
A Idler Pulley
B Circulating Pump Pulley
C Crankshaft Pulley
D Alternator Pulley
E Seawater Pump Pulley