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Machine: Bolens model 3012G (ST125); 12hp 4 cycle twin; 36” deck Condition: Great… until it overheated, blew smoke out the front (blue-white), and finally stopped altogether. Won’t start… no spark. I suspect the smoke came from oil-soaked debris that collected inside the shroud that shields the...

Slippery throttle cable! Bolens ST125 Model 3012G B&G 12 HP engine 404707-0117-01 The throttle lever slides from full to 3/4 since I mindlessly put oil at the top of the cable and allowed some to trickle down the sheath. Now it won't stay at full throttle. The mower mechanic said it needs a...

The following engine is one my Bolens’ 3012G (ST125) lawn tractor that’s in pretty good condition: B&G Model: 404707-0117-01 12.5 HP Air cooled Issues: 1) Max RPM below standard? 2) Throttle lever pushed to max sinks to ¾ distance (drops ¼) History: Machine fairly well maintained; not...

My Bolens ST125 (model 3012G) battery cable ends fit pole type battery terminals as opposed to the apparently now more common blade type. If I simply remove the screw from my battery cable, sandwich the blade terminals of a new style battery between the ends of my pole type clamp, and bolt all...