Does this plug look like saw is lean?

[Andyshine77]

I have notice that when running synthetic the plugs look nice and brown, conventional oil made the plugs more gray looking.

 

[Hddnis]

Factory service manual for the Echo CS-900EVL states 5500-8500rpm operating speed. 2200-2800rpm idle.


Mr. HE

 

[motobike]

Plug Reading

For the sake of the piston and cylinder, I would feel better if it were running a little richer.

 

[ericjeeper]

The first plug posted was to "New"

A new plug is hard to read. It needs to have some deposits on it to hold any color..
Put an old plug back in to do a mixture reading.

 

[dana60]

yeah the plug i had in before looked much darker but i will definately richen still. Thanks for the saw rpm specs it hard to find much info on this saw

 

[Mad Professor]

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Your sister is your mother

Your cousin is your your brother

Your uncle is your father

The XXXX family.......

 

[056kid]

A new plug is hard to read. It needs to have some deposits on it to hold any color..
Put an old plug back in to do a mixture reading.

that i have never herd of. Serious bike guys go through a whole box an a matter of houres while jetting.


that plug looked new cause it is deadly lean!!

 

[dana60]

heres some pic of the saw etc.

 

[dana60]

and a few more

 

[Kansas]

This plug hasn't been in my cs-900 too long probably 5 tanks. I did a muffler mod and adjusted carb what do you think? I though maybe alittle lean

I dont run mine that lean but not far from it, a little tan is what I like to see or darker.

You can tell how the exhaust sounds also- too crisp be carefull!

Depends on the conditions you ran the saw at last mainly when checking though.


Kansas

 

[jack-the-ripper]

Richen it up a bit!

If everyone saves that file they shouldn't have anymore qestions about their plugs. Thanks for the info.

 

[dana60]

I richened it up some i just need to run it and check the plug again

 

[Evan]

i also dont think reading used plugs would be as benificial as reading new plugs.

old used plugs have built up color on them.

i dunno though but id sure run richer i bet like that id doesnt burble at WOT at all.

 

[heimannm]

I like spark plug #28 in PB post (post 20), you can see a little BB of aluminum on the ground electrode, yeah that's probably too lean...

Mark