i need help with a 3.5 briggs

[kodiak 5]

I have two Hahn tillers and both are having the same problem. No spark. Both have points ignition and I'm not real good at diagnosing points ignition problems. Any advise at fixing the problem would be great. I have also heard of people converting it to a pointless system and was curious if anyone has ever done that before.

[gwest_ca-(File Mod) 11,512]

The points are likely under the flywheel and need to be cleaned. They will get invisible corrosion on them while sitting and need the contact surfaces to be polished and cleaned off.

 

If the flywheel has more than one magnet you can't convert them to the breakerless system. If you can convert that's the end of that problem. Post all the numbers and we might be able to figure out whether conversion is possible. Of all the B&S I have only one could be converted and that required only the module be added to the original coil.

 

Garry

[Buckshot 1 15]

 To go along with what Gary stated. Depending on how old those engines are, you may have to send the flywheels to B&$ and have them repolarized to use the Magtron mag/ kit I would contact B&S tech dept. with the engine numbers to find out. 

[puddlejumper 67]

Nick, Did one of those come from me? I have slept since then but I thought I had changed it over allready, Maybe it was the one I had before that one, Anyhow If I remember if its the one I didnt the points where in real good shape and just pull the flywheel and hit them with a real fine sandpaper it should fire right up. It had LOTS of fire when you got it. Scuff the rust off the flywheel and pickup and when you put it back together use 2 dollar bills as a feeler gauge to set the air gap between flywheel and magneto. If that doesnt work I have probably got a flywheel and coil in the trashpile that will work here somewhere.

[kodiak 5]

As far as the corrosion ill have to try that. And yes both are single magnet flywheels. And mitch no i didn't get either of these from you but i had talked to you before about this problem. Also I need to add that one of these tillers I got a couple weak sparks last fall when I was messing with it and now I'm not getting anything.

[WH nut 553]

If they have been sitting outside you have rusted flywheels, make sure the magnets and coil are clean

[Fordiesel69 271]

Just change the points.  I run an old 1969 kmart lawn mower at camp, and I beleive the points have been replaced about 10 times.  It is always the problem.

[groundhog47 347]

This problem occurs often and is usually the condenser. Also awhile back an ancillary unit to do away with points and condenser was made, but don't know if you can still find them. They made them for Tec, B&S, and kohler and some 2 cycle. I f I remember correctly I converted some point/cond units with the magnetron coil set up with same fly wheel (Swap flywheel and coil). If you have one on an old mower or somethin' fairly easy swap hp to hp, course the larger hp flywheel is larger dia.  Just use a business card as a gauge between magnet and coil stator, approx. .010-.012. An old shop with a group of oldies would be a good place to search next if you don't have any older units to test with.

  

One other thing make certain kill wire (if has), has not rubbed bare to ground (usually routed under coil/stator), Thanks

[kodiak 5]

Thanks for all the help luckily I have a good friend on here that lives close by and gave me the parts I needed to swap to a mag set up. Once I swapped the parts they both fired up on second pull. Thanks Mitch for all the help you have given me over the years.