Cobalt Digital Inc 1999 190 Owner's Manual page 92

P
ROPELLERS
INCORRECT PROPELLER APPLICATION CAN CAUSE ADVERSE HANDLING
CHARACTERISTICS. DO NOT CHANGE TYPE OR SIZE OF PROPELLER WITHOUT CONSULTING
YOUR COBALT DEALER!
S
TAINLESS
P
ULLING
P
ROPELLER
Model Mfgr
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
23LS Merc
C B - O ' M
OBALT OATS WNER S ANUAL
- G
ENERAL
Nothing is more important to the proper performance of your boat than the condition of
the propeller(s). Even minor damage (often invisible to the naked eye) can adversely
affect the boat's performance. Common symptoms of damage to propellers are a sudden
drop in RPM, vibration or sudden loss of speed.
A propeller is measured by two dimensions: 1) the diameter; and, 2) the pitch. The
diameter is determined by measuring the distance from the center of the propeller to the
tip of one blade and multiplying that figure by two. Pitch is expressed in the number of
inches a prop will advance in a solid medium in one revolution.
Operational characteristics of your boat, including its speed, may change due to several
factors: atmospheric conditions; additions of extra equipment and accessories or
passengers; marine growth on the bottom; and, engine condition. Other factors include
damage to the prop(s), tides, water temperature and direction of wind. Some of these
factors are directly correctable by repair or maintenance. Others are beyond human
control.
S
TEEL
Some Cobalts are standard equipped with stainless propellers. In this instance, do not
substitute aluminum propellers. Adverse handling and top speed characteristics may be
experienced.
P
OWER
If you need extra pulling power, you can obtain this by decreasing the pitch of your
propeller(s) by two degrees. This will not endanger the engine or drive unit as long as
the manufacturer's recommended top RPM's are not exceeded.
A
PPLICATION
Engine Drive Fuel system
5.0L ALpha
5.0L Bravo 1
5.0L Bravo 3
5.0L EFI ALpha Throttle-Body
5.0L EFI Bravo 1 Throttle-Body
5.0L EFI Bravo 3 Throttle-Body
5.7L ALpha
5.7L Bravo 1
5.7L Bravo 3
5.7L EFI ALpha Throttle-Body
5.7L EFI Bravo 1 Throttle-Body
5.7L EFI Bravo 3 Throttle-Body
350 Mag MPI ALpha Multi-Port
350 Mag MPI Bravo 1 Multi-Port
C - 23LS
HART
std. ratio Option
2 BBL 1.62 1.81
2 BBL 1.65 NA
2 BBL 2.20 2.43
1.47 1.62
1.65 NA
2.20 2.43
2 BBL 1.47 1.62
2 BBL 1.65 NA
2 BBL 2.20 2.43
1.47 1.62
1.65 NA
2.20 2.43
1.47 1.62
1.50 1.65
LS.4
23/25
M S I
ODEL PECIFIC NFORMATION
php Prop Dscpt Mfg. part #
220
220
220
240
240
240
250
250
250 24's 48-823665A6/66A6
260 15 1/4 x 15 48-78116A45
260 15 1/4 x 19 RH 48-13700A45
260
300
300 15 1/4 x 19 RH 48-13700A45
LS