that 125 is a decent motor, a little under powered for a V20, but it will get you there. Begin with preventative maintenance, change the gear lube, put a new water pump in, replace the thermostat, replace the fuel filter,add a water separating fuel filter, replace your fuel line and primer bulb with a quality primer bulb(go OEM). Issues on those motors are: lower unit are weak, fuel pump diaphragms, carbs are a pain to set up properly, mercury electronics, fuel lines on the engine, especially at the junction of the oil line, incoming fuel line, out going fuel line). if your engine has the accelerator pump on the block, get rid of it, you'll never know the difference and it will keep you from having an issue with it. If you don't have one, add a second battery. oil injection on these motors don't give too much of a problem
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