BRP EVINRUDE E-TEC BE50DPLABA, Service Manual

Page: 291 / 422

291
GEARCASE
GEARCASE LEAK TEST
12
If cotter pin holes in the nut (without keeper) and
shaft do not align, tighten further. Do not loosen.
Install keeper (if applicable). Install new cotter pin.
IMPORTANT:
After installation, make sure out-
board is in NEUTRAL and carefully spin propeller.
Propeller must turn freely and should not spin off
center. If propeller appears to wobble, check for
possible bent propeller shaft.
GEARCASE LEAK TEST
Drain lubricant before testing.
Use Gearcase Pressure Tester, P/N 507977.
Install lubricant drain/fill plug and seal, thread
pressure test gauge fitting and seal in lubricant
level hole.
Pressurize 3 to 6 psi (21 to 42 kPa).
If pressure gauge indicates leakage, submerge
the gearcase in water to determine source of leak.
If the gauge does not indicate leakage, increase
pressure to 16 to 18 psi (110 to 124 kPa). Check
for leaks.
Make necessary repairs and repeat test.
Install Gearcase Vacuum Tester, P/N 507982.
Apply 3 to 5 in. of vacuum (76 to 127 mm) Hg.
with pump.
If vacuum gauge indicates leakage, apply oil
around suspected seal. If leak stops or oil is
drawn in, seal is defective.
Repeat test, gearcase must hold minimum of 15
in. vacuum (381 mm) Hg.
1. Thrust bushing
2. Spacer
3. Propeller nut
4. Keeper
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Aluminum or stainless steel
Small diameter hub
Without keeper
120 to 144 in. lbs
Aluminum or stainless steel
Large diameter hub
With keeper
70 to 80 ft. lbs
Aluminum interchangeable hub
Small diameter hub
Without keeper
120 to 144 in. lbs
Aluminum interchangeable hub
Large diameter hub
With keeper
70 to 80 ft. lbs
Stainless steel TBX hub
Large diameter hub
With keeper
70 to 80 ft. lbs
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