253.4
253
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.
INCORRECT PROPELLER APPLICATION CAN CAUSE ADVERSE HANDLING
CHARACTERISTICS. DO NOT CHANGE TYPE OR SIZE OF PROPELLER WITHOUT CONSULTING
YOUR COBALT DEALER!
S
TAINLESS
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
ULLING
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.
P
ROPELLER
A
PPLICATION
C
HART
Model
Mfgr
Engine
Drive
Fuel system
std. ratio
Option
php
Prop Dscpt
Mfg. part #
253
Merc
5.7L
ALpha
2 BBL
1.47
1.62
250
253
Merc
5.7L
Bravo 1
2 BBL
1.65
NA
250
253
Merc
5.7L
Bravo 3
2 BBL
2.20
2.43
250
253
Merc
5.7L EFI
ALpha
Throttle-Body
1.47
1.62
260
253
Merc
5.7L EFI
Bravo 1
Throttle-Body
1.65
NA
260
253
Merc
5.7L EFI
Bravo 3
Throttle-Body
2.20
2.43
260
24’s
48-823665A6/66A6
253
Merc
350 Mag MPI
ALpha
Multi-Port
1.47
1.62
300
253
Merc
350 Mag MPI
Bravo 1
Multi-Port
1.50
1.65
300
253
Merc
350 Mag MPI
Bravo 3
Multi-Port
2.20
2.43
300
253
Merc
7.4L MPI
Bravo 1
Multi-Port
1.50
1.65
310
15 1/4 x 19 RH
48-13700A45
253
Merc
7.4L MPI
Bravo 3
Multi-Port
2.00
2.20
310
26’s
48-823667A6/68A6
253
Merc
454 Mag MPI
Bravo 1
Multi-Port
1.50
1.65
385
253
Merc
454 Mag MPI
Bravo 3
Multi-Port
1.81
2.20
385
26’s
48-823667A6/68A6
253
Merc
502 Mag MPI
Bravo 1
Multi-Port
1.50
1.65
415
14 5/8 x 23 RH
48-13704A45
253
Merc
502 Mag MPI
Bravo 3
Multi-Port
1.81
2.20
415
28’s
48-823669A6/70A6
253
Volvo
5.7GS
SX
2 BBL
1.51
1.60
250
253
Volvo
5.7GS
DP
2 BBL
1.95
2.32
250
253
Volvo
5.7GSi
SX
Throttle-Body
1.43
1.60
280
253
Volvo
5.7GSi
DP
Throttle-Body
1.95
NA
280
F6
3851496-4
253
Volvo
7.4Gi
SX
Multi-Port
1.43
1.60
315
253
Volvo
7.4Gi
DP
Multi-Port
1.78
1.95
315
F5
3851495-6
253
Volvo
7.4GSi
DP
Multi-Port
1.78
1.95
385
F6
3851496-4
253
Volvo
8.2GSi
DP
Multi-Port
415
M
ODEL
S
PECIFIC
I
NFORMATION
C
OBALT
B
OATS
- O
WNER
’
S
M
ANUAL
Содержание 1999 190
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