Yamaha F70 User Manual

Maintenance
90
off switch. Turn off the battery cut-off
switch if your boat has one.
Do not use your hand to hold the propeller
when loosening or tightening the propeller
nut. Put a wood block between the anti-cavi-
tation plate and the propeller to prevent the
propeller from turning.
Checkpoints
 Check each of the propeller blades for ero-
sion from cavitation or ventilation, or other
damage.
 Check the propeller shaft for damage.
 Check the splines for wear or damage.
 Check for fish line tangled around the pro-
peller shaft.
 Check the propeller shaft oil seal for dam-
age.
EMU30662
Removing propeller
EMU29197
Spline models
1. Straighten the cotter pin and pull it out
using a pair of pliers.
2. Remove the propeller nut, washer, and
spacer (if equipped). WARNING! Do
not use your hand to hold the propel-
ler when loosening the propeller nut.
[EWM01890]
3. Remove the propeller, washer (if
equipped), and thrust washer.
EMU30672
Installing propeller
EMU29234
Spline models
NOTICE
ECM00501
Make sure to use a new cotter pin and
bend the ends over securely. Otherwise,
the propeller could come off during oper-
ation and be lost.
1. Apply Yamaha marine grease or a corro-
sion resistant grease to the propeller
ZMU01897
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
6. Thrust washer
6C1-9-3B-1E0.book 90 ページ ２０１２年１１月１９日 月曜日 午前１０時３５分

Yamaha F70 Specifications

Engine Specifications

engine type	16-Valve, SOHC In-Line Four Cylinder
displacement	996 cc
bore x stroke	65 x 75 mm
compression ratio	9.4:1

Power

full throttle rpm range	5300 ~ 6300
horsepower rating	70 hp at 5800 rpm
alternator output	17 Amp

Fuel and Lubrication

recommended fuel	Regular Unleaded (Minimum Pump Octane 87)
ethanol blend limit	10% Maximum
engine oil capacity	2.1 L with filter

Weight and Dimensions

weight	118 kg
degree of trim	-4° through +16°
degree of tilt	65°