Page 152 - Mercury Service Tool Guide (2021) - 8M0174458
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OPTIMAX MODELS
ADAPTER FITTING TACHOMETER / MULTI METER KIT
91-822778A 1 91-892647A01
Measures the internal pressure in the up mode for a single cylinder trim system. Measures RPM on spark ignition (SI) engines. ohms, amperes, AC and CD
voltages; records maximums and minimums simultaneously and accurately reads
ADAPTER FITTING in high RFI environments.
Outboard and MerCruiser
DVA/MULTIMETER
91-822778A 2
Install in place of the manual release valve to measure the internal pressure of the
power trim pump in the up mode.
91- 99750A 1
ADAPTER FITTING Tests the electrical and ignition systems. Consists of a VOA meter with built‑in
direct voltage adapter.
91-822778A 3
Install in place of the manual release valve to measure the internal pressure of the
power trim pump in the down mode. OPTIMAX MODELS
BUSHING INSTALL TOOL
91-875215A 1
Installation tool that aids in the installation of driveshaft bushings.
Mercury Service Tool Guide 145
