051 ignition quit when hot

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Test complete, now problem 051 ignition

Hello again from Virginia Beach where it is in the upper 20's F and the snow won't melt fast enough. I have been turning wrenches on small engines for about 30 years or so, now mostly as a hobby. My latest problem is with my 051 AVE STIHL, 30' bar, ser no 6456142. I was cutting up a Isabel white oak for firewood last saturday when my saw just cut off, after about 3/4 tank of gas. I changed the sparkplug and nothing, took the plug back out and no fire. Cycled the kill switch a few times, still nothing. 5hrs later I check it out, hot spark and it runs fine. I checked with the dealer and he said I need part number 1111 400 1303 and that replaces both the trigger unit and coil, also replaces whatever ignition is on the saw now. The coil on there now has the following numbers 2204 (or 1) 222 022. I have not pulled the flywheel off yet. My questions are 1. Is part number 111 400 1303 correct and replaces both coil and trigger unit? 2. Will it work with my existing flywheel? 3. If the trigger unit is replaced do I need to set/check the timing? 4. What is the best way to remove the flywheel w/o the tool? 5. And what is the thread size in the flywheel that the puller threads into? I can have a tool and die maker at work make one if I know the thread size. Thanks, Courtney Bolze.
 
ignition

The old trigger module was under the flywheel. Forget about it. The new module will mount near the coil. This would also be a good place for an aftermarket module.
Use the puller, it ain't worth the price of a flywheel. The dealer can get it (or let you borrow it if you don't say any bad words like Hus...).
You should not have to reset the timing.
If you can get the coil tested it would help, but my money is on the module.
 
New trigger unit

Stihltech, The way I understand it is the new coil assy does not have a trigger unit under the flywheel? Do I just cut the wires to the old trigger unit and "abandon it in place". What would be the advantages of using an aftermarket module vs. Stihl replacement parts? Thanks, Courtney Bolze.
 
Advantages are: don't have to pull the flywheel, cheaper, probably more reliable, and the Stihl part is, I think, a relabeled aftermarket part.

You won't need a coil assembly. Just wire the new ignition module to the coil. Search for 075 on this forum. A fellow had the same problem and a new ignition module fixed him right up.

Find a source for the Atom ignition module. That's all you'll need. A good small engine shop can probably get it.

Chris B.
 

Latest posts

Back
Top