New Here 066 Rebuild

[BuckthornBonnie]

Well I give up for the night. I have good spark but keep flooding the plug over and over. I never flooded this saw in the 1 1/2 years of day to day use before it broke. I haven't touched the carb and it did sit for about a year and a half between when it broke and now. Should I try to adjust the carb?

Yep.

 

[Ozhoo]

While you have the plug out, hold a lighter over the plug hole, stand back and pull the starter a few times. Repeat as necessary. Set the carb to the default 1 turn each and let her rip.

 

[WalnutIsKing]

I'm getting spark but could it be weak? I can adjust the carb but it ran great before. Not disputing the advice but why would it need adjusting?

 

[Agr516]

In addition to changing the plug, might also want to check the gap on the coil.

 

[Ozhoo]

If you'd like a chinisium coil just pm me your address. I'll test it before sending it so you know it'll work.

 

[r black]

In addition to changing the plug, might also want to check the gap on the coil.

agreed and ...........
a standard refrigerator (advertising add ) magnet works well for adjusting the gap for the coil and is just long enough for the job, also clean any rust build up on the coil and flywheel ....and if your interested the stihl dealer still has all the plastic stickers available ae: magnum / warning labels if your interested in going that far

 

[WalnutIsKing]

I checked the gap and used a business card. Seemed fine. I also checked the idle screws and both were 1 turn out.

 

[WalnutIsKing]

I played with it some more and checked the spark one more time and it seems strong. It misfires so much and won't start. Seems like it's off time. Checked and the flywheel is on the key. What could be going on here?

 

[WalnutIsKing]

It backfires so bad it rips the pull cord out of my hand.

 

[TreeswingerPerth]

Last time I had those symptoms , it was a sheared flywheel key , I would double check it .

 

[WalnutIsKing]

Last time I had those symptoms , it was a sheared flywheel key , I would double check it .

I'll do just that. Thanks

 

[Yukon Stihl]

Some 066 flywheels have two slots for the key...

 

[L34]

Just because it sparks outside the cylinder doesn't mean it does under compression.Had this happen a few times to me.
Does seem timing is out though.
Cheers,Chris.

 

[WalnutIsKing]

No question now, ordered the parts from stihl today. Hopefully I didn't hurt anything trying to start it.

 

[TreeswingerPerth]

S

No question now, ordered the parts from stihl today. Hopefully I didn't hurt anything trying to start it.

Seen that a few times , exactly what mine did .

 

[beavis331]

Just because it sparks outside the cylinder doesn't mean it does under compression.Had this happen a few times to me.
Does seem timing is out though.
Cheers,Chris.

Glad you got it figured out. This is why I said to swap sparkplugs. Hope a new key gets you going!

 

[WalnutIsKing]

I forgot to mention I went and got a new spark plug that next day. Hopefully all will be well after the new key.

 

[arrow13]

No question now, ordered the parts from stihl today. Hopefully I didn't hurt anything trying to start it.

I've done that too. So frustrating when you're so close to the finish. Make sure the surfaces are really dry when putting the flywheel back on with a new nut.

 

[L34]

Glad you got it figured out. This is why I said to swap sparkplugs. Hope a new key gets you going!

Yep missed that reply.
Cheers,Chris

 

[WalnutIsKing]

Got her running today. Thanks for the help.