Page 53 - Mercury Service Tool Guide (2020) - 8M0163249

GASOLINE ENGINE

ROCKER STOPER MERCATHODE REFERENCE ELECTRODE TESTER

91- 66273 91-8M0135998
Plugs the oil holes in the rocker arms to eliminate oil spray while adjusting the vave Use with a digital multimeter to test the function of Mercathode systems. Senses
lash. an electrical current in the water when testing the Mercathode system.
TORQUE WRENCH ALIGNMENT SHAFT TOOL

91- 66274
GASOLINE ENGINE Dial‑type torque wrench that sets torque from 9 to 0‑150 lb‑in. .375 inch drive.

FUEL PRESSURE GAUGE ADAPTER

91-805475A 1
Used to align the engine to the standard Bravo transom assembly for sterndrive
installation.
For MerCruiser drives, except Vazer drives.
ALIGNMENT SHAFT

91-803135
Allows an older fuel pressure gauge to attach to either GM or Mercury MerCruiser
Schrader valve.
CRIMPING TOOL

91-8M2001017
Aids in aligning the engine to the transom assembly for sterndrive installation.
Works with Vazer, Alpha and Bravo sterndrives.
TIMING JUMPER PLUG

91-803146T
Used to clamp high pressure hose clamps. Part of clamp tool kit (P/N 803146A04)

91-805747A 2
Lock the electronic spark trigger ignition system in base timing mode to set the
initial ignition timing. Also used as a jumper lead for testing various circuits.

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