OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines B&S Sprint 35

I have a Masport with a Sprint 35 motor fitted. It has no spark but the coil tests at 4000 ohms so I assume it is good. Anybody know how to test the pulse coil and if that is the problem then I assume you replace the coil and problem should be solved? I am curious to see if there is a way of testing the pulse coil

Coils should test at near zero ohms, they are just a coil of wire after all. 4000 ohms is way too high, I reckon you need a new one.

Well, that depends which winding/s you're testing.

The secondary should read in the range 2.5-5 k ohms - measuring between the plug lead and either the cutout terminal or the stator laminations.

The primary should read <1 ohm, measuring between the cutout terminal and the stator. This test can only detect if the primary winding has gone open circuit.

The only way to test the Magnetron electronics is to disconnect the cutout wire from the coil, and test for spark, assuming the primary and secondary tests above are OK.

The Briggs Magnetron coils are generally very reliable; but they either work, or they don't, as a rule.

All good, cleaned the face of the flywheel and the face of the coil and now good spark. Thanks for that, just needs a new carby

G'day Norm,
What's the model/type number? Some of those Briggs 9 and 10 cubic inch carbies are quite cheap [<$30 for new OEM].

Gadge, no problems getting a carby, $17 I think I paid for it, just have to wait for it to arrive.I needed a capacitor for another one and that cost nearly as much as a new carby