Author Topic: Suggestions for 394xp rebuild  (Read 387 times)

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Offline Smgchandler

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Suggestions for 394xp rebuild
« on: December 25, 2017, 12:02:10 pm »
I have a 394xp that was run without oil in gas.  I have no money in it and i think everything is there except a bar and chain. I have not removed cylinder to take a look so itís possible i may be able to re ring and clean up cylinder because the saw was almost new when this happened. Not sure how old the saw is but itís been under a bench for several years.  My question is since i canít find cylinder unless i go with 395 and the mod then what are my options.  Gluing the port onto top of carb just doesnít appeal to me especially on a chainsaw.   I would be perfectly happy with stock saw.  I cut wood for firewood only but would really like to get it going again.  Iíve read it is a beast   I would probably replace crankshaft seals fuel lines and anything else you want to suggest.  I appreciate any information on quality parts and would certainly be interested in any parts for sale that you think i may need.  Thanks

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Offline Cut4fun .

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Re: Suggestions for 394xp rebuild
« Reply #1 on: December 25, 2017, 12:18:53 pm »
IMO show pics and see if you can save the cylinder etc.
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Offline Smgchandler

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Re: Suggestions for 394xp rebuild
« Reply #2 on: December 26, 2017, 07:02:26 pm »
The saw is froze. Can't pull rope at all and with muffler off i can see side of piston has a scar on it.  How hard will it be to get the jug off ?  Any suggestions.    Saw cosmetically looks great    From experience what do you think cylinder will look like   I don't have time this evening to play with but maybe in a few days

Offline mdavlee .

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Re: Suggestions for 394xp rebuild
« Reply #3 on: December 27, 2017, 10:01:13 am »
Pour atf into plug hole. Warm it up good and let it seep. 2 days if that and it should break the rings free. If that doesn't work then you might have to pump the top end full of grease by making a fitting on the spark plug.
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Offline Smgchandler

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Re: Suggestions for 394xp rebuild
« Reply #4 on: December 27, 2017, 05:36:20 pm »
Mdavlee that worked.  ATF Didnít take 2 days 😍.   Pulled this evening and itís loose.  I bet it doesnít have any compression but at least i can get jug off now.   Tomorrow eve i will see if i can get it off and post some pics of inside cylinder.   Iím not sure what is missing but seems whatever the air filter sits in and goes onto intake is missing.  Maybe some type of tray that sits on the round intake tube. Anybody know what this piece looks like or what itís called and where it can be had ?   Thanks 
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Offline mdavlee .

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Re: Suggestions for 394xp rebuild
« Reply #5 on: December 27, 2017, 05:41:01 pm »
ATF is magic stuff to break stuff loose
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Offline Smgchandler

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Re: Suggestions for 394xp rebuild
« Reply #6 on: December 28, 2017, 03:29:29 pm »
I will post a couple more if i can get closer pics.   I would like to know what the black spacer plastic piece is in sitting in orange pic   Itís brittle and needs replacing    What should i use or how should i begin to clean inside of cylinder   I have a cylinder hone for drill but that may be bad idea if what i feel is aluminum

Offline Smgchandler

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Re: Suggestions for 394xp rebuild
« Reply #7 on: December 28, 2017, 03:32:19 pm »
More pics of cylinder

Offline Smgchandler

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Re: Suggestions for 394xp rebuild
« Reply #8 on: December 28, 2017, 03:46:28 pm »
Is fugly a word or have some of you fellas seen worse ?   Iím going to remove piston from rod.  With new piston does it matter which way you turn it.  Is there an arrow for front or anything ?

Offline mdavlee .

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Re: Suggestions for 394xp rebuild
« Reply #9 on: December 28, 2017, 04:16:51 pm »
Arrow towards exhaust and ring ends to intake

 

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