Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Efco Olympyk Oleo-Mac => Topic started by: farmboy on September 07, 2013, 07:32:54 am

Title: Efco 181
Post by: farmboy on September 07, 2013, 07:32:54 am
Pulled down my 181 to trim tabs on carb.  Decided to pull cyl for a 7200 to 8200 conversion I had planned on doing.  I picked up a NOS 980 P&C kit a while back to go in it's place.  181 has decomp valve 980 doesn't.  WTH piston was lightly scored on ex. (it will cleanup very easily).  36 to1  Husky XP oil premium nonE gas and pig rich 11,200 by tach (13,500 is max rated rpm) 1 tank fuel through it.  What would cause this?  This is a New saw.  Plenty of oil on piston, crankcase, etc.  Fuel was less than a week old from gas station.   
Shep
Title: Re: 181 Piston scored
Post by: Cut4fun . on September 07, 2013, 01:03:43 pm
WAG    Maybe some flashing left in the exhaust port. 

Does it have any air leak symptoms when rolled side to side and bar up and  down etc?
Title: Re: 181 Piston scored
Post by: EHP on September 07, 2013, 01:33:06 pm
 ext side normally means heat , can be by lean or to much ethanol in the gas which causes it to be lean , it could also mean that the piston is growing at a faster rate than the cylinder , I know most are going to say them it should have 4 corner seizer on the piston but if its just a touch to tight then the ext side gets it first
Title: Re: Efco 181 Piston scored
Post by: Cut4fun . on September 07, 2013, 01:40:54 pm
;D

You thought 181 husky didnt you ed............
Title: Re: Efco 181 Piston scored
Post by: EHP on September 07, 2013, 01:42:56 pm
yes as I didnot look up at where it was posted just at the bottom of the page
Title: Re: Efco 181 Piston scored
Post by: Cut4fun . on September 07, 2013, 01:49:06 pm
I did it too.  I added efco to his title.
Title: Re: Efco 181 Piston scored
Post by: farmboy on September 07, 2013, 09:59:16 pm
WAG    Maybe some flashing left in the exhaust port. 

Does it have any air leak symptoms when rolled side to side and bar up and  down etc?
No it was running fine.
I did it too.  I added efco to his title.
Thanks will add brand from now on.
Non ethanol premium gas.  Looking @ the piston top there was one little ding looking spot in the carbon on the off side of the score.  Could have been piece of slag don't know.  Does Gilhardoni make Efco cylinders?  The 4-5 I've looked @ were very nice looked like some Gihl cyl's I've had.
My thought was running hot from being pig rich @ 11,200??  Kid that was running it was probably leaning on it hard.  I wasn't there so don't know just know the kid.
Shep
Title: Re: Efco 181 Piston scored
Post by: EHP on September 07, 2013, 11:15:23 pm
if the saw was pushed on real hard or was real dull it will get very hot even if its set real rich cause as it heats up it becomes not so rich any more , When I'm blocking 4 foot stuff or bigger I set my saw very rich and yes in the first block its rich but by the second block U/m very close to being right on the money but I can still lean burn the motor if I keep pushing hard on it and that even can happen on a big saw , heat in the motor controls how much fuel the saw needs to keep running
Title: Re: Efco 181 Piston scored
Post by: 660magnum on September 07, 2013, 11:31:21 pm
I've observed this too listening to saws in big cuts
Title: Re: Efco 181 Piston scored
Post by: EHP on September 08, 2013, 04:25:37 pm
you would not believe the number of 660 stihl I see here blew up from heat , they set the saw with a 20 inch on it then put a 36 inch bar on it and donot set the saw richer , they blow up real good  ;D
Title: Re: Efco 181
Post by: Cut4fun . on October 21, 2018, 09:10:01 am
When did they stop making the 181?   Says never had mix in it.

Title: Re: Efco 181
Post by: jmester on October 21, 2018, 08:34:01 pm
Not a bad looking saw. Who made them efco or Rebranded from someone else?
Title: Re: Efco 181
Post by: Cut4fun . on October 22, 2018, 07:20:03 am
All I know is Efco named used here.  Made in Italy and has Emak name somewhere on the saws if I recall right.
Other names used on the saws.  Efco Olympyk Oleo-Mac
Title: Re: Efco 181
Post by: farmboy on October 22, 2018, 10:33:04 pm
181 was 980, 981 then 8200.  181 no decomp. D024 mt.  8200 D009 and a decomp.  and plastic changes.  I'd have to check my 181 and 8200 for mfg. dates before I could guess when they changed to 8200.  WAG 10yrs.  I bought em cheap only problem I can't sell em in my area.  Efco what's that.
Shep
Title: Re: Efco 181
Post by: Cut4fun . on October 23, 2018, 08:32:10 am
Same troubles here on the 156 and 152.  Nobody has heard of efco local.
Title: Re: Efco 181
Post by: Cut4fun . on November 13, 2018, 04:37:39 pm
@farmboy  any clue on the actual PHO dry weights of any of these? efco 8200 981 980 181 etc

Trying to see if I am going to give one a go on a trade or not.

Title: Re: Efco 181
Post by: farmboy on November 13, 2018, 09:44:46 pm
I'll weigh a 8200 in the AM.  181 is torn down for port work if I ever get back to it.
Shep
Title: Re: Efco 181
Post by: farmboy on November 14, 2018, 10:06:56 pm
Sorry didn't get weight.  Totally forgot.  Went to saw room got it and put it in my living room so I wouldn't forget again.
Shep
Title: Re: Efco 181
Post by: Cut4fun . on November 15, 2018, 08:26:55 am
Cool and thanks ;)
Title: Re: Efco 181
Post by: farmboy on November 15, 2018, 01:43:35 pm
8200 PHO dry never fueled 17#.  They remind me of2xx series Huskys.  Husky 288 AV mts. fit. 956,156,962, 162,165.  IIRC also 7200,181,8200.  Would have to check my 181 tank/handle to be pos.  Know for a fact they fit 956-165.  Used the spring PN: 503-5148-01 262-288 mts. before on 956 I ported and sold.
Shep
Title: Re: Efco 181
Post by: Cut4fun . on November 15, 2018, 02:33:54 pm
8200 PHO dry never fueled 17#.  They remind me of2xx series Huskys.  Husky 288 AV mts. fit. 956,156,962, 162,165.  IIRC also 7200,181,8200.  Would have to check my 181 tank/handle to be pos.  Know for a fact they fit 956-165.  Used the spring PN: 503-5148-01 262-288 mts. before on 956 I ported and sold.
Shep

Think you so much for doing so.   That tells me to heavy for my left side once filled and b+c
Title: Re: Efco 181
Post by: Cut4fun . on March 13, 2019, 11:39:39 am
Dang thing still for sale. I even hooked buyer up willing to pay his asking price. But seller wouldnt ship to him.