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#1
11-13-2024, 06:18 PM
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Quiet line Cubs #2 and #3 Won't Start
Mowed with Cub #1 today after fixing Clutch Safety Switch and that Cub is
squared away and ready for next season. Now for Cub #2 and #3. Both won't start. Cub #2 was winterized(run out of gas) and has not been touched in 15 months. Fresh gas(2 months old), battery good, cranks fine, but will not start. Turns over and finally it just barely starts to fire, usually twice then the solenoid shuts closed and it does not start. So I swapped carburetor with Cub #3. No change whatsoever! Got my Lisle Spark Tester Light and it indicates spark to spark plug. So there is no apparent problem with the ignition. I sprayed starter fluid into carb, NO change. Again, engine cranks good, Tester indicates spark but just and it begins to start, then nothing. Next I worked on Cub #3. Gas was a little old but ethanol free. Using carb from Cub #2, battery good, cranks fine, but will not start. Turns over and finally it just barely starts to fire, usually twice then the solenoid shuts closed and it does not start. Same as Cub #2!!! Help! Thank you for all replies. You all helped fix Cub #1, I got five total and want 4 working. 
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#2
11-14-2024, 01:09 AM
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Dormant engines tends to be harder to start. There are many reasons including poor spark, bad fuel, weak or bad compression and so on. Based.on your
description...I would concentrate on the spark. I doubt your spark tester provides you the strength of spark even though it indicates there is a spark. Clean or replace plugs and points as well as make sure the gaps are proper. My hunch is corrosion/oxidation promotes weaker spark.
__________________
Two 125's and a 124 all with 42" decks Plow blade #2 Cart QA36 snowthower
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#3
11-14-2024, 07:08 AM
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That's a good idea. I will buy one new spark plug(I like the Motorcraft brand) and see what that does. Also, will spray contact cleaner on the points. Its raining and I planned an indoor day today, but I will be working on these Cubs again tomorrow.
I have a total of 5 Quiet lines, and my goal is to get 4 mowing good again. The nice thing is I can swap parts around to test different parts, theories on what is wrong. After I get them all running good I have to get the Mule Drives and mower decks all sorted and mounted. I got two 38's and three 44's. I'm enjoying my Cub Project.
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#4
11-14-2024, 09:18 AM
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You might find spraying cleaner will not help.
Better to use very fine emery cloth between the points, then drag a folded piece of campaign literature through it to clean the minute crud that is left from the Emery. I mentioned campaign literature because we all seem to have enough to fill a large garbage bag with it. Myself, I have several diamond dusted/coated point files. but most do not have them and I doubt they are even available in todays pointless society. 
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