TOHATSU BFT 90A - User Manual

Other manuals for TOHATSU BFT 90A

Service Manual609 pages

Questions and Answers

A
Allison EvansAug 18, 2025
What to do if my TOHATSU BFT 90A engine does not start?
- J
  Jennifer JacobsAug 18, 2025
  If your TOHATSU Outboard Motor engine doesn't start, several issues could be the cause. It could be due to a clogged or damaged fuel tube, a closed fuel tank vent knob, a faulty primer bulb, a clogged fuel strainer (low pressure side), a clogged water separator, a faulty fuel pump (low pressure side), a clogged vapor separator air vent tube or filter, or a faulty vapor separator. Also, you can perform fuse/electrical power system troubleshooting, alert system/warning system troubleshooting and starting system troubleshooting.
A
Alicia HallAug 20, 2025
Why does my TOHATSU BFT 90A engine start but stall soon after?
- R
  Richard SanchezAug 20, 2025
  If your TOHATSU Outboard Motor engine starts but stalls soon after, it might be due to an incorrect spark plug heat range, a loose IAC valve and/or throttle body mounting bolt, a clogged or damaged fuel tube, a clogged fuel strainer (low pressure side), or a faulty fuel pump (high pressure side). You can also perform alert system/warning system troubleshooting and adjust the idle adjusting screw.
K
Kimberly JohnsonAug 23, 2025
Why is the engine speed not stable during idle and trolling on my TOHATSU BFT 90A?
- J
  Janice DeckerAug 23, 2025
  If your TOHATSU Outboard Motor engine speed is not stable during idle and trolling, possible causes include an incorrect spark plug heat range, a loose IAC valve and/or throttle body mounting bolt, a clogged or damaged fuel tube, a clogged fuel strainer (low pressure side), or a faulty fuel pump (high pressure side). Also, you can perform alert system/warning system troubleshooting.
W
william43Aug 26, 2025
What to do if the overheat warning system comes on in my TOHATSU BFT 90A?
- J
  jacksonstephanieAug 26, 2025
  If the overheat warning system activates on your TOHATSU Outboard Motor, it could be due to several reasons. First, check if the cooling water intake port is clogged and clean it. Another possible cause is using spark plugs with an improper heat range; in this case, replace the spark plugs. If the problem persists, it is best to consult with an authorized TOHATSU outboard motor dealer.
W
whicksAug 28, 2025
Why does the water separator warning system come on in my TOHATSU Outboard Motor?
- B
  Bethany BoydAug 28, 2025
  The water separator warning system activates on your TOHATSU Outboard Motor because water has accumulated in the water separator. Clean the water separator. Also, check the fuel tank and fuel line for water accumulation. If the buzzer sounds again after these steps, consult with an authorized TOHATSU outboard motor dealer.
A
Ashley SteeleAug 30, 2025
What does it mean when the ACG warning system comes on in my TOHATSU Outboard Motor?
- K
  kempsandraAug 30, 2025
  When the ACG warning system activates on your TOHATSU Outboard Motor, it indicates that the battery voltage is either too high or too low. Check the battery to resolve the issue.
C
Cameron ParksSep 2, 2025
What should I do if the oil pressure warning system comes on in my TOHATSU BFT 90A Outboard Motor?
- J
  Joshua MartinezSep 2, 2025
  If the oil pressure warning system activates on your TOHATSU Outboard Motor, add engine oil to the specified level.
L
Leslie DavisSep 4, 2025
What to do if the PGM-FI warning system comes on in my TOHATSU Outboard Motor?
- M
  megan37Sep 4, 2025
  If the PGM-FI warning system activates on your TOHATSU Outboard Motor, it indicates a fault within the PGM-FI system itself. Consult with an authorized TOHATSU outboard motor dealer.
C
Casey PerkinsSep 7, 2025
Why does the oil pressure warning system come on in my TOHATSU BFT 90A?
- E
  Elaine MasonSep 7, 2025
  If the oil pressure warning system activates on your TOHATSU Outboard Motor, it might be due to a shortage of engine oil. Add engine oil to the specified level. Alternatively, it could be caused by using improper engine oil; if so, change the engine oil.
D
donald52Sep 9, 2025
What to do if the water separator warning system comes on in my TOHATSU Outboard Motor?
- S
  Scott BridgesSep 9, 2025
  If the water separator warning system activates on your TOHATSU Outboard Motor, it indicates that water has accumulated in the water separator. Clean the water separator and check the fuel tank and fuel line for water accumulation.

Summary

SAFETY

Safety Information and Operator Responsibility

General safety guidelines, warnings, and operator duties for safe use of the outboard motor.

Safety Label Locations

Identifies and explains the location of various safety labels on the outboard motor.

COMPONENT IDENTIFICATION

Remote Control and Tiller Handle Types

Details the identification of components for different control types (R and H).

Common Outboard Components

Identifies common parts like fuel gauge, fuel tank, and connectors across all types.

CONTROLS AND FEATURES

H Type Controls

Explains the operation of controls specific to the tiller handle (H) type.

R Type Controls

Explains the operation of controls for remote control (R) types.

T Type Controls

Explains the operation of controls for power trim/tilt (T) types.

Common Controls and Indicators

Describes common controls like tilt lock lever and indicators like oil pressure and overheat warnings.

INSTALLATION

Transom Height and Installation Position

Guides on selecting the correct transom height and mounting location for the outboard motor.

Outboard Motor Mounting and Battery Connection

Details the process of securely mounting the motor and connecting the battery cables.

PRE-OPERATION CHECKS

Engine Oil and Fuel Checks

Instructions for checking engine oil level and fuel quality before starting the engine.

Propeller and Other Checks

Guidance on inspecting the propeller, cotter pin, and other essential items before operation.

STARTING THE ENGINE

Fuel Line Connection and Priming

Steps for correctly connecting the fuel line and priming the fuel system.

Engine Starting Procedures (H Type)

Detailed steps for starting the engine using the H type tiller handle controls.

Engine Starting Procedures (R Type)

Detailed steps for starting the engine using the R type remote control.

OPERATION

Break-in Procedure

Guidelines for the initial break-in period to ensure proper engine performance and longevity.

Gear Shifting and Steering

Instructions on operating the gear shifting mechanism and steering the boat.

Trimming the Outboard Motor

Explains how to adjust the outboard motor's angle for optimal boat performance and stability.

STOPPING THE ENGINE

Emergency Engine Stop

Procedures for immediately stopping the engine in emergency situations.

Normal Engine Stop

Steps for safely shutting down the engine during normal operation.

TRANSPORTING

Fuel Line Disconnection and Trailering

Procedures for disconnecting the fuel line and preparing the motor for transport or trailering.

CLEANING AND FLUSHING

Cleaning and Flushing Procedures

Instructions for cleaning and flushing the outboard motor with fresh water after use.

MAINTENANCE

Maintenance Schedule

Provides a comprehensive schedule for regular maintenance tasks and intervals.

Engine Oil and Spark Plug Service

Details on changing engine oil and replacing spark plugs for optimal performance.

Battery and Fuel Filter Maintenance

Guidance on battery care, fluid levels, and fuel filter inspection/replacement.

STORAGE

Fuel and Vapor Separator Storage Prep

Instructions for preparing the fuel system for long-term storage to prevent deterioration.

Battery and Motor Storage

Guidelines for proper battery storage and positioning the outboard motor during storage.

TROUBLESHOOTING

Warning System Troubleshooting

Identifies symptoms related to warning systems and their possible causes and remedies.

SPECIFICATIONS

Model Specifications

Technical data including dimensions, engine type, power, and capacities for each model.

Noise and Vibration Levels

Presents measured noise and vibration levels according to industry standards.

“EC DECLARATION OF CONFORMITY” CONTENT OUTLINE

Declaration Details

Outlines the standard content of the EC Declaration of Conformity document.

INDEX

Alphabetical Index

An alphabetical listing of topics with corresponding page numbers for quick reference.

TOHATSU BFT 90A Specifications

General

Horsepower	90 HP
Full Throttle RPM Range	5000 - 6000 RPM
Starting System	Electric Start
Ignition System	Digital CDI
Steering	Remote Control
Displacement	1496 cc
Fuel System	Electronic Fuel Injection (EFI)
Shaft Length	20", 25"
Cooling System	Water Cooled