ProTurn 148 with Kawasaki self-chokes

[slomo]

Pull the carb and inspect the main jet.

Have you ever, pulled the engine cover, and cleaned the cooling fins and block?

Down on power quoted below.

 

[StarTech]

Really got to narrow the cause as it can be fuel supply, carburation, or even a failing ignition system.

The twin barrel Nikki due develop loose main jets which can cause over rich conditions. But with bogging engaging the deck it sounds like you are dropping a cylinder.

 

[pict1000]

Really got to narrow the cause as it can be fuel supply, carburation, or even a failing ignition system.

The twin barrel Nikki due develop loose main jets which can cause over rich conditions. But with bogging engaging the deck it sounds like you are dropping a cylinder.

So if I might be "dropping a cylinder", what can I do to check for that and/or fix it?

 

[pict1000]

I have all but eliminated a fuel supply problem. Tomorrow I'll be testing to see if a cylinder is dropping. I have an ignition coil assembly ordered and on the way because all indications (not listed here) lead to that. I will update this when I learn something – for the sake of future Googlers.

 

[pict1000]

The problem has been fixed. I replaced the ignition coil assembly that tested bad, and I spliced a severed kill wire that led to both coil packs.

When I lifted the engine cover to get to the coil packs, I saw that the kill wire was broken. Weird, right! No rodent marks or signs of heat-related damage. Since the engine has been hard to turn off ever since I bought the mower (new, ten years ago), I assume the factory guy didn't secure the kill wire properly, allowing it to move around and be chopped by the spinning flywheel the first time I used the mower. Who knows.

The engine kills as it should now.

I hope that the electrical tape I used to splice the kill wire isn't going to melt. I didn't know if I should use a plastic wire nut or electrical tape. Any thoughts?

Thanks for all of your help!!!!

 

[StarTech]

I use butt connectors myself or better crimp a Ferrel on the wires and cover with heat shrink tubing to make a neater job.

 

[pict1000]

Thanks, if I ever go back in there – for instance, if my electrical tape splice fails – then I'll take your advice, for sure.