2005 Yamaha Motorsports SXViper Mountain Owners Manual - Page 29

2005 Yamaha Motorsports SXViper Mountain Manual

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ESU03840 "D.C.S." (Detonation Control System) indicator light This snowmobile is equipped with a system which is able to detect and control engine detonations in order to protect the engine from damage. The "D.C.S." indicator light 1 flashes to inform the rider that the detonation control system has been activated. If a detonation is detected by the knock sensor, the system automatically adjusts the ignition timing for optimal firing, and the "D.C.S." indicator light flashes. The system helps protect the engine from detonation damage while the light is flashing. (See page 5-10 for "D.C.S." indicator light flash pattern numbers 1 and 2.) NOTE: @ G G @ If the detonation level increases, the "D.C.S." indicator light flash pattern changes from pattern number 1 to pattern number 2. If excessive detonation levels continue, maximum engine speed is reduced to protect the engine. Engine performance will decline according to the detonation level. After detonation stops, the engine protection control is deactivated, and the "D.C.S." indicator light goes off. NOTE: @ G G @ If the carburetor settings are not appropriate for the operating conditions, detonations may occur. If the "D.C.S." indicator light flashes continuously, it is recommended to consult a Yamaha dealer. CA-16E No. 1 "D.C.S." indicator light flash patterns · · · 0.5 s 0.5 s Light flashes continuously in this pattern. · · · 2 0.2 s 0.2 s Light flashes continuously in this pattern. : On : Off s: Second 5-10

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5-10
ESU03840
“D.C.S.” (Detonation Control System) indicator
light
This snowmobile is equipped with a system which is able
to detect and control engine detonations in order to pro-
tect the engine from damage.
The “D.C.S.” indicator light
1
flashes to inform the rider
that the detonation control system has been activated.
If a detonation is detected by the knock sensor, the sys-
tem automatically adjusts the ignition timing for optimal
firing, and the “D.C.S.” indicator light flashes. The system
helps protect the engine from detonation damage while
the light is flashing. (See page 5-10 for “D.C.S.” indicator
light flash pattern numbers 1 and 2.)
NOTE:
@
●
If the detonation level increases, the “D.C.S.” indica-
tor light flash pattern changes from pattern number 1
to pattern number 2. If excessive detonation levels
continue, maximum engine speed is reduced to pro-
tect the engine.
●
Engine performance will decline according to the det-
onation level.
@
After detonation stops, the engine protection control is
deactivated, and the “D.C.S.” indicator light goes off.
NOTE:
@
●
If the carburetor settings are not appropriate for the
operating conditions, detonations may occur.
●
If the “D.C.S.” indicator light flashes continuously, it is
recommended to consult a Yamaha dealer.
@
CA-16E
No.
“D.C.S.” indicator light flash patterns
1
Light flashes continuously in this
pattern.
2
Light flashes continuously in this
pattern.
: On
: Off
s: Second
0.5 s
0.5 s
·
·
·
0.2 s
0.2 s
·
·
·