Removing The Propeller; Installing The Propeller - Yamaha F4 Owner's Manual

Checkpoints
Check each of the propeller blades for
G
wear, erosion from cavitation or ventila-
tion, or other damage.
Check the propeller shaft for damage.
G
Check the splines / shear pin for wear or
G
damage.
Check for fish line tangled around the pro-
G
peller shaft.
Check the propeller shaft oil seal for dam-
G
age.
NOTE:
If the shear pin equipped: it is designed to
break if the propeller hits a hard underwater
obstacle to help protect the propeller and
drive mechanism. The propeller will then
spin freely on the shaft. If this happens, the
shear pin must be replaced.
EMU30660

Removing the propeller

ZMU02710
EMU29194
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).
ZMU02711
1. Cotter pin
2. Propeller nut
3. Washer
4. Propeller
5. Thrust washer
3. Remove the propeller and thrust wash-
er.
EMU30670

Installing the Propeller

EMU30371
Spline models
ECM00340
CAUTION:
Be sure to install the thrust washer be-
G
ZMU02712
fore installing the propeller, otherwise
the lower case and propeller boss
Maintenance
46