Briggs& Stratton 3.5 Hayterrette - NO SPARK !?

.....errrrrrr Ray it is 15 years old with a COIL- it doesn't have points or a condensor. These were phased out a long time before this machine was even thought of.

Flywheel key is a red herring as you would still have a spark- albeit it will run (if at all) very badly even with a broken key.

If the coil (or module) is new and been fitted correctly along with a new plug, then I would suggest it's an ignition cut-out problem. i assume your engine will not normally start until you depress the lever on the upper handle? If so, the cables have a habit of giving slightly, so even though you depress the lever and the cable moves on the engine eng it might not be enough to break/make the ignition circuit. Get a friend to depress the lever and pull the recoil whilst you don a pair of gloves and physically pull the cable back away from the engine cut out- only gently mind you, a couple of mm travel on the cable is all it may need. If it starts then adjust/replace the OPC cable.

pleasant
October 2010

Hi there, it sounds like you are having the same problem with your Haterette as I had earlier this year. I would recommend you check the points and capacitor. I can’t remember just how much the parts are but they were really cheap. The B&S replacements had pretty good fitting instructions enclosed along with a small tool to enable removal and reconnection of the wires.

You mentioned replacing the coil, the gap should be set to 0.25mm-0.36mm using a non-ferrous feeler gauge, using a ferrous one could weaken the magnets (so I have been told) I used a thin piece of card which worked just fine.

Before going to the spares shop, I’d suggest you check the flywheel key. I had an engine once which had distorted the key and upset the timing.

May I also suggest you check “Youtube” there are a few interesting videos on there showing various repairs/fixes for similar engines.

Good luck, Ray

Ray
October 2010