Re: merc 175
Standard yearly maintainance on that motor:
Impeller
Gear oil
Thermostats
Poppet Valve
Plugs
Disassmeble and clean the carbs
New fuel pump kit.
New Inline filter
New Fuel water Seperator
Decarb every 100 hours
Inspect all wiring and bleeder holes
Check for leaks around hydraulic Trim + Tilt rams
I also recommend running w/o Spark Advance Module/idle stabilizer and with timing set manually. Dump the Oil Injection and premix. The oil injection on those motors is notorious for failing. I have two bad cranks in my garage from motors with busted plastic gears.
I'm sure I'm leaving something out . . . but that's all I can think of now.
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