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Yamaha F70 User Manual

Yamaha F70
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Maintenance
80
clean and paint the areas. A touch-up paint is
available from your Yamaha dealer.
EMU2848B
Periodic maintenance
WARNING
EWM01871
These procedures require mechanical
skills, tools, and supplies. If you do not
have the proper skills, tools, or supplies
to perform a maintenance procedure,
have a Yamaha dealer or other qualified
mechanic do the work.
The procedures involve disassembling
the motor and exposing dangerous parts.
To reduce the risk of injury from moving,
hot, or electrical parts:
Turn off the engine and keep the key(s)
and engine shut-off cord (lanyard) with
you when you perform maintenance un-
less otherwise specified.
The power trim and tilt switches oper-
ate even when the ignition key is off.
Keep people away from the switches
whenever working around the motor.
When the motor is tilted, keep away
from the area under it or between it and
the clamp bracket. Be sure no one is in
this area before operating the power
trim and tilt mechanism.
Allow the engine to cool before han-
dling hot parts or fluids.
Always completely reassemble the mo-
tor before operation.
Maintenance, replacement, or repair of
the emission control devices and sys-
tems may be performed by any marine
engine repair establishment or individual.
All warranty repairs, however, including
those to the emission control system,
must be performed by an authorized
Yamaha marine dealership.
A service manual is available for purchase
through your Yamaha dealer for owners who
have the mechanical skills, tools, and other
equipment necessary to perform mainte-
nance not covered by this owner’s manual.
EMU28511
Replacement parts
If replacement parts are necessary, use only
genuine Yamaha parts or parts of equivalent
design and quality. Any part of inferior quality
may malfunction, and the resulting loss of
control could endanger the operator and
passengers. Yamaha genuine parts and ac-
cessories are available from your Yamaha
dealer.
EMU35521
Maintenance interval guidelines
The service intervals provided in the Mainte-
nance Chart were developed based upon
“typical” use that includes operating at varied
speeds, with sufficient time for engine warm
up and cool-down, a medium to light load,
and an average cruising speed near the
3000 to 4000 rpm range. As with any engine,
however, if your normal operating conditions
are different, you should consider service
more often than shown, especially how often
you change your engine oil and gear oil. Ex-
amples might include extended wide-open-
throttle use or long periods of trolling or
idling, carrying heavy loads, or frequent
starting and stopping or shifting. More fre-
quent maintenance will often pay off many
times over in increased engine life and great-
er owner satisfaction. Consult your Yamaha
dealer for additional maintenance recom-
mendations.
6C1-9-3B-1E0.book 80 ージ 012年11月19日 月曜日 午前10時35分

Table of Contents

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Yamaha F70 Specifications

Engine Specifications IconEngine Specifications
engine type16-Valve, SOHC In-Line Four Cylinder
displacement996 cc
bore x stroke65 x 75 mm
compression ratio9.4:1
Power IconPower
full throttle rpm range5300 ~ 6300
horsepower rating70 hp at 5800 rpm
alternator output17 Amp
Fuel and Lubrication IconFuel and Lubrication
recommended fuelRegular Unleaded (Minimum Pump Octane 87)
ethanol blend limit10% Maximum
engine oil capacity2.1 L with filter
Weight and Dimensions IconWeight and Dimensions
weight118 kg
degree of trim-4° through +16°
degree of tilt65°

Summary

Safety Information

Outboard Motor Safety

Crucial safety precautions for operating the outboard motor.

Specifications and Requirements

Installation Requirements

Critical requirements before installing the outboard motor.

Components

Engine Shut-Off Cord (Lanyard) and Clip

How to properly use the engine shut-off cord for safety.

Operation

First-Time Operation

Initial steps and procedures for operating the outboard motor for the first time.

Breaking In Engine

Proper break-in procedure to ensure engine longevity and performance.

Starting Engine

Step-by-step guide for safely starting the outboard motor.

Maintenance

Trouble Recovery

Troubleshooting

Common problems and their solutions for starting and running issues.

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