Yamaha F115 AETL [460/709] Shimming counter rotation models for worldwide

6-80

LOWR

SHIMMING (COUNTER ROTATION MODELS)

(FOR WORLDWIDE)

SELECTING THE REVERSE GEAR

SHIMS

NOTE:

Select the shim thickness (T1) by using the

specified measurement(s) and the calcula-

tion formula.

Select:

• Shim thickness (T1)

Selecting steps

(1) Measure (M1).

NOTE:

• Measure the combined thickness of the

roller bearing 1 and thrust bearing 2.

• Turn the roller bearing outer race two or

three times so the rollers seat. Then, mea-

sure the height of the bearing, as shown.

• Perform the same measurement at three

points on the roller bearing outer race.

• Find the average of the measurements

(M1).

Digital caliper

90890-06704

6890

6B30

(2) Calculate the reverse gear shim thick-

ness (T1).

NOTE:

“F” is the deviation of the lower case

dimension from standard. It is stamped on

the trim tab mounting surface of the lower

case in 0.01-mm units. If the “F” mark is

missing or unreadable, assume an “F”

value of “0”, and check the backlash when

the unit is assembled.

Reverse gear shim thickness (T1)

(T1) = 25.3 + F/100 – M1

6B40

F+5

R-1

P+2