HELP! Shindaiwa 757. Bad Coil? YouTube Video.

[Stvshelley]

 

[backhoelover]

does it die when you give it gas?

 

[Stvshelley]

does it die when you give it gas?

Not always it just keeps the same tone and rpms.

 

[HarleyT]

Try a new plug?

 

[Yotaismygame]

You want to sell it? I had a mint one before I started porting and looking back I wish I would have ported it. I bet they are a beast ported. strong runners stock.

 

[Stvshelley]

Try a new plug?

New plug gap set to specs. Set the gap for the charging coil, no corrosion between the charging coil and spark coil connection. No corrosion on the wire at the boot or at the spark coil. New carb kit. Good compression, case has no air leaks, tank vent fine, flywheel is not altered and seats on key correctly. Disconnected shutoff switch to verify it's not causing problems.

 

[Stvshelley]

You want to sell it? I had a mint one before I started porting and looking back I wish I would have ported it. I bet they are a beast ported. strong runners stock.

What were you thinking $

 

[Stvshelley]

Normally I would just buy a coil but with this being a less common saw its harder to find parts, it has two coils and echo/shindaiwa parts are so expensive new, and there's very limited aftermarket.

 

[HarleyT]

It was hard to get parts for it 20 years ago!!

 

[Stvshelley]

It was hard to get parts for it 20 years ago!!

Yeah the crazy thing is they still make and sell this saw in other country's! They're around $1,200 to $1,600 USD.

 

[backhoelover]

ive heard of putting the coil in the oven at around 200 degrees but i would ask around first. dont let the wife know

 

[backhoelover]

does that saw have a 2 piece coil?

 

[Stvshelley]

ive heard of putting the coil in the oven at around 200 degrees but i would ask around first. dont let the wife know

Hahaha I have a little oven in the shop I use to bake mufflers after painting. Made that mistake once

 

[Stvshelley]

does that saw have a 2 piece coil?

Yeah 2 piece coil I think the switch in the exciter is shorted or stuck causing pre ignition

 

[backhoelover]

have a pic of the exciter?

 

[Stvshelley]

have a pic of the exciter?

 

[Yotaismygame]

That’s a unique looking coil. There are some members on here from other countries. Wonder if someone could get the part from their country?

 

[Stvshelley]

That’s a unique looking coil. There are some members on here from other countries. Wonder if someone could get the part from their country?

Yeah it's certainly different than modern coils. Availability isn't so much the issue as price. It's $100 for the exciter coil. I bought an aftermarket 488 coil set off Amazon for $30 and going to see if I can modify to fit.

 

[trickytune]

Yeah it's certainly different than modern coils. Availability isn't so much the issue as price. It's $100 for the exciter coil. I bought an aftermarket 488 coil set off Amazon for $30 and going to see if I can modify to fit.

Any news on the outcome? My 488P does this sometimes.. Did it today actually.