On 25/05/2018 16:08, wrote:
I apologize if part of this seems off topic but I thought that the electronic component of it might be on. I have this 3.5 horse engine on my old push mower. The engine is about 38 years old now but the mower is used very infrequently so the hours are not that bad. About 5 or 6 years ago I replaced the old OEM coil that used points, with a used newer electronic type that eliminates the points. The mower is on it's third carburetor, gas tank and second deck but it has always started ok. I tried to start the mower this morning and as sure as my wife said, (I hate it when she's right), "You'll never start that old thing", it wouldn't start. Long story short there is no HV spark to the plug. It seems as though the coil is bad again. I was going to hit up a few used lawnmower places to try to get a replacement coil because I have no engine numbers on my machine to look up the part but I was wondering if anyone knows if it's possible to bench test these things. Thanks for any help Lenny



That reminds me I must wind up my Hayterette mower with Griggs &
Stratton circa 1975 for the first time this year.
IIRC ignition checks on my repair page
www.diverse.4mg.com/repair4_2.htm
but original with points