no spark 1977 85 hsp johnson

[fishinnutinwis]

motor was fine last year.currenting recharging battery to get hot according to other posts...cant get spark.an outboard mech. who "didnt know much about johnsons said he tried disconnecting red main and jumping starter to get spark but still failed.anyone out there can tell me what to check and /or how to test with ohm meter please...can e me direct if needed-- twiggy@woodsnways.com

 

[Joe Reeves]

Re: no spark 1977 85 hsp johnson

FishinNut.... The proper way to check the spark is to remove the s/plugs, disconnect the large main (red) electrical connector (as you have mentioned), then using a small jumper, jump from the battery side of the starter solenoid to the 3/8" hex nut on that solenoid (but not the gounding nut... the other one).<br /><br />The spark should jump a 7/16" gap, but the engine must be turning approximately 300 rpms in order to have the stator generate the AC voltage to energize the powerpack (the reason for having ther s/plugs out).<br /><br />If no spark, check the "brown brown/orange or brown/yellow" (whatever stripe is on that other brown wire) that lead from the stator to the powerpack. With an ohm meter hooked between those two wires, you should get a reading of approximately 630 plus/minus 75 ohms.<br /><br />If that reading is okay, the s/plugs are out, the red plug is disconnected, and the engine is turning over properly, that indicates the powerpack has failed.