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How to use this manual
Conditions when testing and adjusting
Conditions can affect specifications when checking, measuring, and making certain adjustments. Ser-
vice data in this manual was determined under the following conditions:
• Electrical resistance for components such as ignition coils and sensors was measured at 20 °C (68
°F).
• Engine compression was measured at:
•Sea level
• 20 °C (68 °F)
• All spark plugs removed
• Throttle valve at WOT (depending on model specification)
• Trim/tilt angles shown are when the transom angle is 12 degrees.
Abbreviation
The following abbreviations are used in this service manual.
Abbreviation Description
ABYC American Boat and Yacht Council
APS Accelerator Position Sensor
ECM Electronic Control Module
EN European Norm (European standard)
EPA Environmental Protection Agency
ETV Electronic Throttle Valve
HCU Helm Control Unit
ISC Idle Speed Control
LPS Lever Position Sensor
OCV Oil Control Valve
OS Offshore
PCU Power-train Control Unit
PTT Power Trim and Tilt
SBW Steer by Wire
SCU Steering Control Unit
SDS Shift Dampener System
SPS Shift Position Sensor
TPS Throttle Position Sensor
VCT Variable Camshaft Timing
Y-COP Yamaha Customer Outboard Protection
YDIS Yamaha Diagnostic System
XTO Xtreme Thrust Output
WOT Wide Open Throttle
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