3120xp coils

[Black Dog Chainsaw]

Ok, so a friend Alex is putting a 1998 3120xp back together for me... After a large parts bill, Alex tells me that the black coil is showing low to no spark.

What are my options? Do the cheap $20 China coils work? Are they limited like the other 3120 coils? I hate to think about another $105-$120 for a new OEM black coil.

 

[Warped5]

All I can say is that @Definitive Dave told me they had a low failure rate in his experience. I bought two (neither is a 3120) and both have been fine thus far.

 

[psuiewalsh]

@Mastermind might use the 272 coil in them?

 

[Chris Zautner]

Tried a New spark plug?

 

[Mastermind]

It depends on the age of the saw. The ones with the green coil can use a 272 coil without modding the flywheel. The older ones need the flywheel re-keyed.

 

[Black Dog Chainsaw]

So a 272 coil and reclocking the flywheel should work?

 

[Black Dog Chainsaw]

Anyone tried the husky/partner 3120/1250 AM coils.

 

[Mastermind]

You have to slot the holes a little....bit yeah.

I'll be trying one Nathan. That's cheap.

 

[rattler]

The one I did had the black coil on it the owner had already replaced it.

 

[Black Dog Chainsaw]

You have to slot the holes a little....bit yeah.

I'll be trying one Nathan. That's cheap.

I just ordered one to Alex (AEmetalwerx) in Cedar Rapids. We'll know what's what when the slow boat from China gets here.

 

[Mastermind]

I've got some broaching tools setup to rebroach the older flywheels. I'm glad to share what I've learned on doing this.

 

[smokey7]

I have been running 2 am coils on my jonnys had 1 bad out of the box and 2 good still runners. Seller made right. They run just as good maybe better then the old oem I had. I'd try it again no problem.

 

[Black Dog Chainsaw]

I've got some broaching tools setup to rebroach the older flywheels. I'm glad to share what I've learned on doing this.

I'm no machinist, could you explain "broaching" to me? This is an older 1998 3120xp with a black coil so I assume some modification is needed...

Probably another 2-2.5 weeks before we see the Hutzl China 3120xp coil...

I ordered a 272xp coil from DRZ small parts on ebay. It arrived and Alex said the metal tab on the right side of coil makes this one not work for 3120xp install. Don't know if that's a clearance issue or what...

 

[Fifelaker]

A broach is a tool to cut a slot for the woodruff key to set in.

 

[Mastermind]

You'll have to alter the bolt slots some for the 272 coil.

 

[Mastermind]

Some pics of broaching tools and stuff.