Question about McCulloch Garden
I can't start my blower/vac, have put new spark plug in but still doesn't seem to have spark.
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Posted on Jan 02, 2017
Ok. Good job on doing what you could, right off! The simplest things are the most overlooked, and the most unforgiving.
So, you know your plug is wet, so you got some fuel flow.
Now let's figure out the plug no-fire problem. (This is under the assumption you haven't beat on this blower with a sledge-hammer at one point. The whole "key-way" is fried thing.)
1. Grab ahold of that plug THEN crank away. One time will tell you yes or no on spark. No, I am not joking, and yes, it is better than staring at the end of a plug and wondering if your eyes are bad.
In fact, better than a cup of coffee......in a bad way.
2. Check your kill switch. It is either: Grounding, or Open (open like it should be, UNTIL you push it, click it, or slide it, whatever you got). One CHEAP and fast way: Unhook the kill switch.
Then crank away. No spark? Not the kill switch then!
3. Check your spark plug GROUND. Let's say you got some shocking results from grabbing onto that bad boy. NOW check where the plug meets the cylinder head when she is screwed down in there. Believe it or not.....if it is funky, she won't ground right!
Hence, no worky.
4. You got no spark at all.....STILL. Let's look over your Spark Plug WIRE. Is she wore through? Is SHE grounding out? Has she heat failed? Then do #5.
5. STILL no spark. Let's check the last 2 things......
Rotor Magnets, and Magneto (ignition coil).
IF you have a volt/multi-meter, hook her up to the plug wire. No juice = Bad Magneto, or Bad Plug Wire. SOME juice = Good Magneto, but Bad Plug Wire (in some mowers/weedeaters, etc., remember that the Magneto is where the kill switch hooks too.
See if it is somehow grounding you out, by being loose but still touching the cylinder, etc.)
6. Failing Magneto. This can happen, and it does. You get SOME juice, just not ENOUGH juice. 2-Strokes make a lot of heat, even Magneto's give up the ghost after a while, sometimes. In this case, find a replacement!
Posted on May 30, 2009
Check the fuel lines for cracks/breaks. If they are o.k., then:
You will need to disassemble the carburetor and spray with carb.cleaner. Make sure the small screen is free of debris. (Should be able to see daylight through it.) Use a Den Tek Brush, (http://www.drugstore.com/products/prod.asp?pid=165357&catid=1152), to clean the small portals in carb. These portals can become blocked. Reassemble and start.
Just let me know if you need further assistance.
Posted on Jun 21, 2009
Don't know if the problem has been solved.
Have you reset the gap of the magneto? Set the gap aprox. 0.010" or 2 sheet of the 8x10" regular paper thickness.
Loosen srews, insert the papers in the gap, drop the coil extract to the wheel, re-tighten the screw set, remove the papers. If the firing part are in good condition, they should produce a spark.
Posted on Jun 24, 2009
Most likely low compression caused by stuck piston rings or a scored piston and cylinder. This unit was made by Poulan and they have had an epidemic of this problem. The solution is to tear the unit down and put in new piston rings. Before you install the new rings you need to get a sheet of glass and some 600 grit wet dry sand paper. Sand each ring down about .002 to .003 and reinstall. This should solve your problem as long as you have good fire and the piston and cylinder is not scored.
Posted on Sep 14, 2009
SOURCE: Craftsman 2 cycle blower stalls.
Most Probably the problem lies in the adjustment of the carburettor. There are two needles in the carb one for lowend adjustment and one for high end adjustment. Your lowend adjustment seems fine. The highend needle needs to be adjusted. Following are some very detailed procedures for adjusting these types of carbs
If your machine has a carb other than a "Walbro" dont worry the procedures are same. I am sure if your engine has not completed its life span this will solve your problem.
Posted on May 19, 2010
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