Yamaha F25 - Manual (Page 46)

Maintenance
41
Checkpoints
● Check each of the propeller blades for
wear, erosion from cavitation or ventilation,
or other damage.
● Check the propeller shaft for damage.
● Check the splines / shear pin for wear or
damage.
● Check for fish line tangled around the pro-
peller shaft.
● Check the propeller shaft oil seal for dam-
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
EMU29194
Spline models
1.
Straighten the cotter pin and pull it out us-
ing a pair of pliers.
2. Remove the propeller nut, washer, and
spacer (if equipped).
3. Remove the propeller and thrust washer.
EMU30670
Installing the Propeller
EMU30371
Spline models
CAUTION:
ECM00340
● Be sure to install the thrust washer be-
fore installing the propeller, otherwise
the lower case and propeller boss could
be damaged.
● Be sure to use a new cotter pin and bend
the ends over securely. Otherwise the
propeller could come off during opera-
tion and be lost.
1. Apply Yamaha marine grease or a corro-
sion resistant grease to the propeller
shaft.
1. Cotter pin
2. Propeller nut
3. Washer
4. Propeller
5. Thrust washer
U69M15E0.book Page 41 Wednesday, April 5, 2006 4:48 PM