Stale fuel causing engine failures

 In my review of videos on small engine repair (of lawn mowers) it was mentioned that common cause of engine failure was stale fuel due to winter storage.   It was mentioned that fuel should not be allowed to sit down for not more 6 weeks (60 days others say).   All of sorts of things happen to fuel:    water, some additives solidify, dirt ingested into the fuel tank.  

Such rubbish could be ingested into the intakek manifold and ultimately into the cylinders which could cause engine not to fire or stall.   

So after the long winter, or after long storage you have to spill the fuel and replace this How?

    1  By tilting the eninge?

    2  Or draining the tankk and carb?   (open the dome and bottom.

To solve the problem and go around stuck carb needle, lift the mower (the walk behind)  up.   

Ignition coil replacement

 This post has watched 3 videos on ignition coil replacement.   This was resorted to when diagnosis reveal:   there is enough fuel, there is no problem with fuel lines, and sparks do not show at spark plugs.   So the ignition coil could be defective.   The three instances were on:    zero turn hydraulic operated lawn mower, a walk behind lawn mower and a John Deere lawn mower.  The replacement is straight forward and easy,   The parts can be purchased from Amazon (Lazada too?)

The old Volvo mechanic advice on gasoline engine repairs was right and his advice is forever!

 Several decades ago we had a gasollne Datsun and when it conked out at Carebi I had the chance to call a mechanic around, a Concrete Aggregates specializing in Volvo machinery who obliged to repair the old Datsun car.  He said that so that I will save money and so that I will not disturb him (he is being petitioned to work at Canada for Volvo Canada) I should remember two things:

    When a gasoline engine conks out there are two possible sources:   fuel line and electrical

    1,  For fuel

         1.  Is there fuel in the tank

         2.  Is the fuel of good quality (like its not stale, no water or dirt, other contaminants?

         3.  Are the fuel filters:   inline or main filters functional (they could be blocked) allowing fuel to pass through?

        4.  Fuel lines:    are they clogged, kinked or allowing air in the line?

 2.  For electricity:

      1.  Is there electricity coming out into the spark plugs?

      2.  is the coil functional?

      3.  Is the breaker working?

      4  Is the spark plug working

In many of the repair videos that I watched today on small engine, lawn mower repair, these kept being repeated as a meaningful advice