1 Prong Ignition Chip Stihl 050 051 075 076 08S Points

Single prong electronic ignition module for vintage Stihl saws. Replaces the breaker points and the condenser with a solid state unit. THE ONE CHECK THAT MATTERS Take the flywheel cover off and look behind the flywheel. Breaker points and a condenser there - this chip replaces them. No points, factory electronic or transistor ignition - this part has no job on that saw. These saws were built both ways over their production runs, so the model name on the shroud is not a reliable guide and the hardware is. One look settles it. WHAT IT REPLACES The mechanical breaker points and the condenser. That is all. It does NOT replace the ignition coil and it will not fix a dead coil. THE COIL NUMBERS FOR THIS FAMILY 1108-404-3200 - coil for the 08 and 08S 1111-400-1305 - coil for the 075, requires a separate trigger unit 1111-400-1301 - coil for the 076 and TS510, requires a separate trigger unit 1111-400-1303 - the all in one module, coil and trigger in one, used across the 050, 051, 076, TS510 and TS760 1118-400-1001 - Stihl's own external trigger module, which does the same job as this chip If the coil is your failed part, one of those is what you need rather than this. WHICH SAWS STILL HAVE POINTS 050 and 050AV - points saws. 051 and 051AV - built both ways. Early machines had breaker points; later ones are breakerless. Use the flywheel cover test, not the model name. 075 and 075AV - later saws. Many left the factory with electronic ignition already fitted. Look before ordering. 076 and 076AV - later again, and the same caution applies. 08 and 08S - originally points, sharing their points and condenser with the 041 and 045 family. A factory electronic version also exists. Check which coil yours has. An E in the model designation on a saw of this era means factory electronic ignition. An 051AVE does not need this part. WHY FIT ONE Points wear. The rubbing block wears down, the gap closes, the timing drifts, and the saw gets harder to start a little at a time until one day it will not. Then you clean the points, reset the gap, and buy another few months. A module has no rubbing block and no gap, and nothing to adjust. The timing on these saws is set by the flywheel, not at the module, so once it is on and running it stays where it is. FITTING The old points and condenser can be removed or left in place with their wires disconnected. Cut the wire that fed the points and connect it to the module's single prong. The module grounds through its mounting screw into the backing plate. Make that joint clean bare metal - with one prong, the screw is carrying the ground and a painted or corroded seat will give you no spark. Route the kill switch wire so the backing plate cannot pinch it when it goes back on. Easy to get wrong and hard to find afterwards. Check clearance between the coil pole shoes and the flywheel magnets by turning the flywheel slowly by hand before you pull the starter. If you get no spark, check the ground through the mounting screw first, then the kill switch circuit, before deciding the module is bad.

• OPEN THE FLYWHEEL COVER AND LOOK BEFORE YOU ORDER - THIS IS THE WHOLE TEST - If there are breaker points and a condenser behind the flywheel, this chip replaces them. If your saw already has factory electronic or transistor ignition, there is no points circuit to take over and this part has no job to do. That one look settles it faster than any model number, because these saws were built both ways across their production runs.
• ONE PRONG, AND IT GROUNDS THROUGH ITS OWN SCREW - A single terminal takes the wire that fed the points. The ground path is the mounting screw into the backing plate, so that joint has to be clean bare metal. Because there is one prong there is nothing to fit backwards, which is simpler than the two terminal modules - but it also means the mounting screw is doing real electrical work, not just holding it on.
• IT REPLACES THE POINTS AND CONDENSER - IT IS NOT A COIL - If your coil is the dead part, this will not help you, so work out which has failed first. The coil numbers for this family: 1108-404-3200 on the 08 and 08S. On the 075 it is 1111-400-1305 and on the 076 and TS510 it is 1111-400-1301, both of which need a separate trigger unit. 1111-400-1303 is the all in one module, coil and trigger together, used across the 050, 051, 076, TS510 and TS760.
• WHICH SAWS STILL HAVE POINTS - The 050 and 050AV are points saws. The 051 and 051AV were built both ways, points early and breakerless later, so the 051 needs the flywheel cover test rather than the model name. The 075 and 076 are later saws and many left the factory with electronic ignition already fitted, so look before ordering. On an 08S, check you have the points type coil. Any model with an E in its designation, such as 051AVE, is factory electronic and does not need this.
• NOTHING TO GAP AND NOTHING TO TIME - Points close up as the rubbing block wears, so the saw drifts off song and gets harder to start until one day it will not. A module has no rubbing block and no gap, and the timing on these saws is set by the flywheel rather than at the module, so there is nothing to adjust. The old points and condenser can come out or be left unhooked. Keep the kill switch wire clear of the backing plate, and check coil to flywheel clearance by hand first.