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#1
10-11-2011, 09:46 PM
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18 Mag Starting Issues
Hello all! I have a 784 with an 18 Mag & Walbro Carb. Having problems with the engine starting consistently. If I get it to run once, it will start every time. Once it sits for a day, it will try to fire and sputter on the first crank and will never take after that. Went through and cleaned the carb. When my buddy and I took the carb apart, we found a lot of dirt, so we installed an Advance Auto fuel filter in the line. Haven't had the carb back apart to see how well it worked, but I'm thinking there's still dirt in the carb somewhere.
Anybody have any suggestions?
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CCC 784 w/ Triple Hydraulics IH 982 Cub Cadet Commercial H1748 Walk-Behind 50C Deck 42" Hydraulic Angle Front Blade 41" IH Rear Blade QA42A Snowthrower 
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#2
10-12-2011, 05:55 AM
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Where is the Fuel Filter installed...??? And what type of Fuel Filter did you install...???
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#3
10-13-2011, 01:12 PM
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Fuel filter is intstalled on the engine side of the firewall. It is a $3 part from advance that is a small fuel filter for small engines. However, it is important to know that the starting issues were not affected by the installation of the filter; it was doing the same thing before.
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CCC 784 w/ Triple Hydraulics IH 982 Cub Cadet Commercial H1748 Walk-Behind 50C Deck 42" Hydraulic Angle Front Blade 41" IH Rear Blade QA42A Snowthrower
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#4
10-13-2011, 08:55 PM
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My 1812 did about the same thing. (same tractor as your 784). I would start than would not start again. I had to pull the motor and put a new coil on in it. it is on the back side of the motor. The coils are around 120$ but it worth it! Pulling motor is not hard six bolts and wires and the gille and then it is out. Put new motor mounts it and aircraft bolts and blue locktite. Than clean the motor super clean. Gap the coil at 10 thoundths. Put the motor back in and it will fire right up! My 1812 runns 10 times better now and you bump the key it starts right up.
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1971 128,3pt,ags,rebuilt motor,headlights 1988 1812,dual ports 1966 122,creeper,3pt,ags,sa,headlights,restored 1st place at RPRU 2013 1966 123,3pt,brinly spring assist 1973 108 1968 125 Attachments:QA36A,wfblade,2 nf blades,brinly disc,a cultivator,plow,homemade wrecker boom with 2000lbs winch,ih weights,50lbs weights,2IH windbreakers
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#5
10-13-2011, 09:25 PM
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Does it fire if you give it a shot of gas down the carb? You could have a fuel pump problem also. If it fires by putting gas down it then bypass the fuel pump and have at least a 1/2 tank of gas an try to start it. I would try this first and then move on to the other possible problems. Good luck and keep us posted.
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This ain't no hobby....it's an addiction
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#6
10-13-2011, 09:42 PM
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My 1872 is the same way today, but , I know what the problem is because I created the problem.
The 90 degree snorkel kept vibrating loose, so I used Locktite on the screws. Some Locktite got on the choke shaft somehow, now it is difficult to pull the choke all the way out. Partial choking causes the exact symptoms you described. I keep waiting for the Locktite to wear away, but, 6 years and the choke on the SuperCub still requires a SuperYank!!
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