Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Dolmar Makita => Topic started by: fordfairlane78 on January 21, 2014, 04:12:29 am


Title: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 21, 2014, 04:12:29 am
I recently purchased a dolmar 5105 knowing that it had problems.  Well the cylinder cleaned up beautifully but the piston was to far gone. I have found 2 different pistons for this saw windowed (63) & solid (62) so which one? The saw came with a windowed piston & I am 99% sure it was never messed with so go back with that?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: 660magnum on January 21, 2014, 04:42:13 am
The 63 replaced the 60 and 62

http://www.ereplacementparts.com/piston-cpl-p-74643.html
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 21, 2014, 09:04:06 am
Ok,that definetly shows the windowed piston so that is what I will order. I had not seen that yet. Thanks 660magnum. I believe you have stated in another thread that you have a 5105....Do you like it? I am very excited to get this back together and run it as the weight is great and if it is as powerful as i have heard and the #'s say it will become the quick go to saw in my Dolmar collection.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: 660magnum on January 21, 2014, 11:26:41 am
My 5105 is a very powerful chainsaw for 50cc. I like it very well.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: Cut4fun . on January 21, 2014, 07:13:23 pm
Jim's  5105 with 5100 muffler is a strong runner with 3/8 too.

Here is some of the saws ran in 12"  2 1 cut times, Same  chain was run and was new out of box chain.

stock dolmar 5105 with 5100 muffler,   3/8 7T  5.59  5.50

stock husky NE 346xp 50cc,    3/8 7T  5.63  5.62

stock partner 5000 plus , 3/8 7T 5.47 5.84

stock 357xp 56.5cc, 3/8 7T  4.29  4.34



Title: Re: dolmar 5105 piston....solid or windows?
Post by: farmboy on January 23, 2014, 08:54:30 am
Windowed piston is NLA unless a dealer happens to have one.  The pic in the listing hasn't been changed.  You will get a slab piston.  I know that for a fact.  I have 2 63 slab pistons in stock.  I wouldn't worry too much about it the slab piston works real well.  The 7900 was changed from windows to slab piston too.  The slab pistons on both 5105 and 7900 are lighter than windowed and a tad wider skirt.
Shep
Title: Re: dolmar 5105 piston....solid or windows?
Post by: farmboy on January 23, 2014, 09:06:38 am
Check these links
http://www.edgeandengine.com/store/catalogsearch/result/?q=181132063&arireturnurl=http%253A%252F%252Fwww.edgeandengine.com%252Fstore%252Fparts-lookup%2523%252FDolmar%252FPS-5100_S_Chain_Saws_-_Gasoline%252FCylinder%25252c_crankcase%252F2S01070065%252F2S01070003C

http://store.chainsawr.com/products/dolmar-5105-45mm-chainsaw-piston-assembly-181-132-063-new-box-7

http://www.psep1.biz/arinet.asp#/Dolmar/PS-5105_Chain_Saws_-_Gasoline/Cylinder%2c_crankcase/2S01350001/2S01350003A

Pats is where i normally get my Dolmar parts.  Google PN you might find it even cheaper. It's happened before.  Piston is the same for 510,5100S and 5105.
Shep
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 23, 2014, 04:35:38 pm
Well I purchased one from Chainsawr with the 63 # but his image showed the windows. ...?????? Why did dolmar change it?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: 7sleeper on January 24, 2014, 02:07:55 pm
Probably cheaper to produce.

7
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 25, 2014, 10:13:20 pm
Update.....ok I tried to run the saw before with an attempt at cleaning the original piston. ...saw cut well but would not idle after WOT...so tried a gasket kit in the carb....same thing so my assumption (a!# of you and me) was a new piston. ..thanks chainsawr fast & perfect as always. So new piston/ring and same thing.WTF ..During all of this I stole another well used 5105 but mechanically great...so got it and it runs perfect so a quick carb swap and ....wammo! The saw I had been working on runs perfect....so had anyone had trouble with these zama c1q dm14's? The good one I have has 01a under dm14 & the bad has 94a. .... any thoughts?  The single wep seal is not leaking .... and while I'm here..The used 5105 went through about 2 1/2hrs of semi dry hedge cutting after being converted to 3/8 050 20" bar and WOW! Great saw. Was working to bury the 20 but didn't quit....As fast as the not working hard 6400 I have with same 20" chain
Title: Re: dolmar 5105 piston....solid or windows?
Post by: 7sleeper on January 26, 2014, 04:49:32 am
Do you have an ultrasound cleaner? I would highly recomend one of those for your carb. I have one of the jewlery very small models without heat. They would be absolutely sufficient if you don't need it often. It still works great. My procedure is dismantle the carb and place it into the us cleaner and add:
1. hot faucet water with simple green and run it max time
2. new! hot faucet water with simple green and run it max time
3. new! hot faucet water with simple green and run it max time
4. new! hot faucet water without anything!!! and run it max time, this is to remove any "soap" residues
5. blow dry carefully with the compressor, spray through all the holes with wd40, reassemble, run saw

!!!!What is important when exchanging the water => dumping the old water/dirt mix into the sink, is to dump it through a strainer/filter/sieve whatever! Because small parts like going down the drain too... Don't ask how I know!

Good luck!

7
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on January 26, 2014, 10:18:17 am
Quote
Do you have an ultrasound cleaner? I would highly recomend one of those for your carb. I have one of the jewlery very small models without heat. They would be absolutely sufficient if you don't need it often. It still works great. My procedure is dismantle the carb and place it into the us cleaner and add: 1. hot faucet water with simple green and run it max time 2. new! hot faucet water with simple green and run it max time 3. new! hot faucet water with simple green and run it max time 4. new! hot faucet water without anything!!! and run it max time, this is to remove any "soap" residues 5. blow dry carefully with the compressor, spray through all the holes with wd40, reassemble, run saw

!!!!What is important when exchanging the water => dumping the old water/dirt mix into the sink, is to dump it through a strainer/filter/sieve whatever! Because small parts like going down the drain too... Don't ask how I know!

7 +1 on that/ KilliansRedLeo
Title: Re: dolmar 5105 piston....solid or windows?
Post by: Cut4fun on January 26, 2014, 11:25:46 am
zama carbs were known for trouble on the 5100 saws, don't know if the 5105 has same carb.  ?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: 660magnum on January 26, 2014, 11:44:28 am
One of the more common ailments with the carbs is damage to the high speed nozzle check valve possibly caused by high pressure air being blown into the carb.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 26, 2014, 01:00:13 pm
Thanks for all the help guys. I have been thinking about getting an ultra sonic cleaner. I think this one is a jet problem as from what I have found from the original owner the saw had this issue from the beginning.  He took it to a dealer, the said they fixed it and after a couple hrs poof stuck ring. He got a new one from dolmar and bought this back. He had a lengthy thread on another site about his experience. I am going to pick up a cleaner but for this I think I will get another carb....This carb was used on 5100,510,& 5105 so should be something out there.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on January 29, 2014, 08:17:42 pm
Alright purchased a used carb off of ebay with the last #'s of 57a and still same problem.....how many of these zamas were junk from the get go? so far my experience with them is 1 out of 3 good.....not a good ratio for a carb used on proffesional saws......are there any alternatives carb wise for these or am I going to be stuck buying one brand new and crossing my fingers? they are running around $100 from the little research I have done.........
Title: Re: dolmar 5105 piston....solid or windows?
Post by: farmboy on January 29, 2014, 10:08:24 pm
I guess I've been lucky not had any carb issues on any of my 6-5100's.
Shep
Title: Re: dolmar 5105 piston....solid or windows?
Post by: Nathaniel Vansickle on February 04, 2014, 05:21:35 pm
No real problems with the 5100 carbs either. A few that ended up lean after break in and had to replace under warranty because of the epoxy. new carb through Dolmar is $105 or a new one straight from Zama is only $51. Only difference between them is the one from Zama doesn't not have the plastic clip for the throttle cable on it. you have to reuse your old one.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: mdavlee . on February 05, 2014, 07:54:12 am
The solid sided piston should make more power if its like the 7900.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 05, 2014, 09:25:30 am
Just yesterday I replaced the dished piston in a HVA 261 with a slab sided piston out of a HVA 365 Special. Stock 262XP and 261 pistons are windowed. I actually have two identical saws a 261 with a 262XP piston and a 261 with a 365SP piston. Both were built up for a tutorial I am doing. I will post results of head to head performance if anyone is interested. I too am interested to see if the type of gains seen in the 7900 are achievable elsewhere.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: Cut4fun on February 05, 2014, 09:37:20 am
My PP475 has a slab sided BB372 piston that is almost identical to the oem windowed piston in it and I swear it feels stronger then stock.

Even though I am not  switching P's back to back to find out. I am happy with it big time.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 05, 2014, 09:44:58 am
Well I had the luxury of two saws, so I did one each way. The one with the windowed 262XP piston is at 155PSI compression, not started yet, so once it breaks in compression should go up. The one with the 365SP is at about 168-170 PSI. Get them both running later this week, so we will see.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: Cut4fun on February 05, 2014, 10:49:28 am
It wouldnt matter to me which runs better . Because the PP475 pistons are NLA and I was looking for a donor piston. 

I passed my NOS 475 p onto Roger because I new he was more of a collector. Me as long as the saw runs good I am happy and found a piston easy to get for the 475 saws.

The 064 pistons work in these too.  If you must have windows. Little more pin to crown height too.  Just need to open between the pins some like I did the 066 piston in the 505.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 06, 2014, 09:28:04 am
UPDATE:  tried another used carb from ebay and once again same thing on either saw. idles fine sounds good on the high end and when you let off the trigger dies so i now have 1 out of 4 zama c1q dm14a's that work. did a little more research and found elswhere that the little valves inside these carbs are reffered to as the nozzle assembly check valve and are zama # A007222 for this carb. I ordered some and first place cancelled my order stating that zama no longer made them????? found another place and they have not cancelled my order yet so maybe they had them in stock. where I read about  this also had an ingenious method of removing/replacing them from the carb using a drill press with a bit upside down/flat end down. tried it on my original carb and out it came with a little pressure. as soon as i get the new ones in I will get it all back together and post the results.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 06, 2014, 09:34:37 am
Cool, I got a couple of non working ones too! Let us know the results and where you got them, if you would be so kind!
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 12, 2014, 09:41:06 am
No real problems with the 5100 carbs either. A few that ended up lean after break in and had to replace under warranty because of the epoxy. new carb through Dolmar is $105 or a new one straight from Zama is only $51. Only difference between them is the one from Zama doesn't not have the plastic clip for the throttle cable on it. you have to reuse your old one.

Am having no luck in aquiring these check valves........How do I order parts directly from zama? I am just a Joe Schmoe not a dealer and it seems you have to be a dealer.......their site sends you to distributors but doesn't seem to be any luck there either....I am at the point where I am ready to just get a whole new carb but really don't want to pay $100 for what zama says is $51.... any suggestions? I would much rather just pay the $4/check valve for a few of them but it seems zama is not supplying them any more...been rejected by TEW and Jack's se which were the only places I found carrying them through google......
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 12, 2014, 10:24:33 am
Try this guy on e-Bay! Just send him a note, his name is Carl Neilson and he is a Zama dealer. Great guy and if you have the part number he can probably get it for you.

http://www.ebay.com/itm/Genuine-Walbro-Carburetor-HDA-144-1-replaces-HDA-87-117-120-FREE-SHIPPING-/131100862571?pt=US_Outdoor_Power_Equipment&hash=item1e8638686b

Fairlane78: I just sent Carl the following message for you however it is Wednesday and that is Carl's golf morning so may not hear back until later in the day.

Quote
Carl, I need some parts for a zama c1q dm14a, referred to as nozzle assembly check valve and are zama # A007222

Was wondering if perhaps you could get them, I need 6!

TJ Holcomb
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 12, 2014, 10:42:31 am
No joy! Here is Carl's response, sorry.

Quote
Hi. The part number is correct, but my Zama distributor doesn't list it. I checked for availability from other dealers and they all say NLA (no longer available). Sorry. Thanks for asking, Carl.

Sent him a response asking if the carb is available and the price!
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 12, 2014, 11:02:30 am
Hey thanks!  Really appreciate it! Thanks!
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 12, 2014, 03:38:56 pm
I sent you a pm on where to get the new carb did you get it?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 12, 2014, 06:14:04 pm
I find it hard to believe that there isn't another zama or other nozzle that won't work?  Push the nozzle out and remove the check valve and give it a try too
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 12, 2014, 06:32:23 pm
Is it a C1Q ZAMA?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 12, 2014, 06:41:19 pm
If so, look into the AA007157 nozzle/check valve
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 12, 2014, 06:51:01 pm
I'm curious now!! When you let off the throttle and it dies, what does it take to re-Start the Saw?  Choke? No choke and crank with throttle open?  Adam
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 12, 2014, 07:42:34 pm
YYes died after full throttle. ...few pulls no choke and it's idling again.  I have already pressed 1 out and it is bad. I will check that # out. It is a c1q dm14a....Thank you to all who have helped and big thanks to KRL, got the carb ordered....i will look at that part # tonight as even though I got a new carb I still would like to know if this fixes it for future reference.....it really should be a simple fix but starting to sound as if zama doesn't want it to be repairable....  i will post what I find out. ...on another note,  a Clarke love the avitar...big motorhead fan here!
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 12, 2014, 09:14:07 pm
Weird, I was always under the impression that the check valve was only there to keep air from entering the wet side of the metering chamber at idle?  got into Motorhead back in the rowdy high school days!!

Let us know how thus pans out. Adam

There was a large batch of internally hairline **** zamas a while back...
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 13, 2014, 06:10:42 am

There was a large batch of internally hairline **** zamas a while back...
[/quote]
Was anything as far as reports or recalls put out about these? The good one I had was an 01a, bad being 57a,58a & 94a...sorry trying to quote off of my dumb/smart phone doesn't work very well. .....
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 13, 2014, 08:41:27 am
I believe those were all in the stihl ms200t saws.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 18, 2014, 05:11:12 am
Checked the zama site and just about every 2 c1q carbs the part # for this part changes...Also every # is no longer available >:(......i did get into another c1q carb on my ps 34 this weekend and without popping it out the nozzles looked the same except this one was brass. I knew this carb was good just needed a kit so I didn't mess with it.  Guess zama just wants everyone to buy a new carb if these fail....they are still making them so they have the parts just won't distribute them....
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 18, 2014, 09:25:37 am
Isn't zama Stihl owned? Can Zama C1 parts be purchased through a stihl dealer?
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 18, 2014, 10:05:24 am
Yes, Stihl bought Zama a short while back. Don't know aboit a dealer, if it is NLA it is NLA to everyone. However the carb is still available for like 40 dollars.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 19, 2014, 12:55:24 am
Yes the carbs are not horribly priced if you can find a dealer willing to not mark it up 100%... thanks again KRL...but still it's really a waste of a carb when 10min. & less than $5 would fix it.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: KilliansRedLeo on February 19, 2014, 03:53:18 am
I agree with that. Funny thing, the stuff that happens when one company buys another.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: fordfairlane78 on February 20, 2014, 08:47:58 pm
Recieved new carb today and the saw runs perfect. I really missed having this saw and have a cutting project in the morning but maybe someday if I'm bored I will pull this good carb,press the nozzle out and install it in another carb to really answer the question but I cant see any other difference. Until Zama/Stihl decide to sell these again I guess it doesn't really matter anyway.
Title: Re: dolmar 5105 piston....solid or windows?
Post by: aclarke on February 20, 2014, 09:06:17 pm
Glad to hear you got it going! carburetor issues can be a pain