We have a Dyna Trap but it seems to stop and start, is this normal if not what could we do to overcome this, it is supposed to cover 1 acre

186 x 87 = 16182 Sq feet.
1 acre is 43560 Sq feet.
1/4 of an acre is 10890 Sq feet.

School homework?

Dyna Trap Model Numbers start with 'DT' here is a link to their manuals page with pictures.... maybe you can find your model that way. https://dynatrap.com/manuals

https://www.amazon.com/Lentek-MK116-MK11G-Mosquito-Trap/product-reviews/B0000638SS

Amazon com Customer reviews Lentek MK11G Mosquito Trap

Go to a farm and home store or website. They offer stakes that go in your yard. The stakes have barely audible clicking device that goes off randomly. The clicking from the stakes will run the moles from your yard and into all your neighbors yards

Don't take my word for the hard pull start , but you probably should have a mechanic dissemble
the pull start assembly. I am only guessing it needs to be cleaned and lubricated.

sounds like it is your idle jet stopped up remove and clean it with a small wire also clean your carb The idle jet is in your carb

make sure that when you replace your filter that there is no obstruction in the filter thread(small stone), i have had many problems with this,if the drain light keeps comming on then check the waste pipe stand.

Check your spark plugs. If they don't have your injector mix right, you could be fouling plugs...

First, you need to get the probability of the two events - not enough rain and enough rain.
The probability of not enough rain is 1 less the probability of enough rain.

Supposing that the probability of not enough rain is 0.70, then the probability of enough rain is 0.30.

Therefore to get the profit per acre, you multiply these probabilities with their profits per acre. Hence,
$4000 * 0.30 + $1600 * 0.70 = $2,320 is the average profit per acre.

The above method uses the mathematics principle of the weighted expected returns.

I hope this helps.

Had a similar problem (flashing lights 1 and 2). Drained the machine by diconnecting the outlet hose and using a shallow bowl on the floor. Removed and cleaned filters. Forced clean water through by using a garden hose pipe(you can only do this one way, you cannot force water down the outlet pipe). Removed and cleaned the pump (you have to do this from under the machine but easy enough). Finally ensuring the waste trap under the sink was clear. Bingo!! No parts, no expensive engineer.