Greens grooming equipment is expensive enough that youd rather repair than replace but when one of your mowers or rakes starts sputtering a bit on the start, or dies out halfway through the job, its tempting to decide that its time to go shopping. Before you decide to scrap your old equipment, go through these diagnostic tests. If the machine is still working, but the motor is dying, the best answer may be a new engine, definitely not a new mower.
First, keep in mind that a problem with one part of an engine could well show up as a symptom elsewhere. What looks like a governor problem often turns out to be a balky carburetor. Take the diagnostics step by step all the way through, then evaluate whether the engine is worth the trouble to repair it, or whether it makes more sense to buy a repower kit and drop in a new, more powerful motor.
Problem: Engine will not start.
You can usually divide wont start problems into two causes: fuel or ignition.
1) Make sure the fuel is fresh, and the oil/gas mix is right. As basic as that sounds, bad gas is one of the most common causes of engine failure.
2) Make sure that theres a spark. Remove a spark plug...