Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: jmester on December 13, 2014, 08:48:34 pm

Title: Stihl 290/390
Post by: jmester on December 13, 2014, 08:48:34 pm
What are some thoughts on the hyway piston and cylinder kits for these saws. Have two parts saws here was thinking of making one.
Title: Re: Stihl 290/390
Post by: 660magnum on December 13, 2014, 08:56:11 pm
Some versions of the Hyway brand are the value of choice.

There's one saw application that Hyway is not the best choice as it has not been refined. It works OK with a few hand tool adjustments here and there?
Title: Re: Stihl 290/390
Post by: 660magnum on December 13, 2014, 09:04:16 pm
Mako is a better brand for the 290/390
Title: Re: Stihl 290/390
Post by: jmester on December 13, 2014, 11:11:58 pm
Who sells the mako kits or who might you get them from.
Title: Re: Stihl 290/390
Post by: 660magnum on December 13, 2014, 11:34:55 pm
http://www.weedeaterman.com/product_p/mako039-tlst0621.htm
Title: Re: Stihl 290/390
Post by: jmester on December 14, 2014, 07:31:47 am
Thanks 660. Send an email to the guy to see when he may have some more as they are on back order.
Title: Re: Stihl 290/390
Post by: 660magnum on December 14, 2014, 08:10:59 am
That's the only place I specifically found the Mako brand.
Title: Re: Stihl 290/390
Post by: northern boy on December 14, 2014, 10:32:33 am
I HAD A 310 NEED TO BE REBUILT I BOUGHT A 390 MOTOR FROM BAILEYS COMPLETE FOR $199 I THINK FITS IN PERFECT RUNS STRONG I HAVE A 290 AS WELL WITH MUFFLER MOD CUTS GREAT I RUN A 18'' TO 24'' BAR WITHOUT ANY ISSUES ALITTLE OF TOPIC BUT WAS JUST ME 2 SINCE LOL
Title: Re: Stihl 290/390
Post by: jmester on December 14, 2014, 08:32:57 pm
Is the baileys kit NWP or does someone else make it for them. I have run some of there big bore kits for 460/660 and was not impressed. They did not last long in pro use. That is good to here. Maybe there quailty has improved in the last few years since I bought my last kit.
Title: Re: Stihl 290/390
Post by: jmester on December 17, 2014, 09:48:18 pm
Found out NWP is made by hyway but is a lesser quality  version of the hyway labeled kits
Title: Re: Stihl 290/390
Post by: Jd2007 on December 21, 2014, 03:25:59 pm
Found out NWP is made by hyway but is a lesser quality  version of the hyway labeled kits

Good to know, thanks for sharing.
Title: Re: Stihl 290/390
Post by: 660magnum on December 21, 2014, 03:40:14 pm
NWP products are a line of chainsaw related items marketed by the same company that owns Woodland Pro & Bailey's in California.

Their cylinder kits were usually made by the same company as the Hyway cylinders.

This Taiwanese cylinder company has made these for a few years and typically make continuous improvements.

 
Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 03:50:28 pm
I have read where some people say Mako brand is OEM supplier.  I can not find any info saying this. Of course the one saying it is a seller of mako products.  ;)

Info from Oz. http://www.jakmax.com.au/

Mako Precision Parts
JAK Max is proud to be the exclusive Mako Precision Parts Distributor for Australia and New Zealand.
Mako is an international brand consisting of a comprehensive range of attractively packaged, precision engineered replacement parts for chainsaws, cut-off saws, brushcutters and small engines. Mako precision parts meet or exceed O.E.M specifications and are currently being distributed to over 25 countries world wide. JAK Max will continue to expand the Mako range of products regularly with new and innovative products, in order to provide our customers the quality products they require.

Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 03:53:10 pm
Chainsaw Power products are engineered and manufactured in Taiwan and sold for STIHL, HUSQVARNA, and PARTNER. The primary products are Chain Saw, Cut-off Saw, Lawnmower, Generator, Hyway Cylinder and their component.
Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 04:02:04 pm
034 036 mako kit shown. Very poor. Hopefully they have improved 100% since this.

white area in transfer is rougher then pitted gravel road the owner says.

(http://i39.tinypic.com/35m1e69.jpg)
(http://i39.tinypic.com/jgnuch.jpg)
(http://i43.tinypic.com/1198qol.jpg)
(http://i40.tinypic.com/xeiwb8.jpg)
(http://i40.tinypic.com/2djc3e8.jpg)
(http://i39.tinypic.com/20ijp1z.jpg)
Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 04:07:31 pm
Where I have been keeping checks on mako if getting any better.  http://chainsawrepair.createaforum.com/ported-saws/mako-chainsaw-pistons/msg51019/#new
Title: Re: Stihl 290/390
Post by: 660magnum on December 21, 2014, 04:15:13 pm
When dealing with cylinder/piston replacement kits from the Far East, there has been a trend of inconsistency. The problem exists for the same brand and chainsaw from one year to the next. Some marketed offerings have no manufacturer's brand and are sourced from different places at different times.

Some manufacturer's product line varies from one fitment to the next. For example their Stihl 660 big bore could be terrible while the standard bore version would be the best of the aftermarket sources.

Some of the aftermarket companies listen to feed back and make improvements. But to buy a replacement kit from someone in the USA that ordered his supply several years ago may not be the same as a guy that just got his 1,000 kits in last week?

One thing is for sure . . . Inconsistency 
Title: Re: Stihl 290/390
Post by: jmester on December 21, 2014, 09:07:42 pm
I will take some pics of the 290 mako kit and post them up for you all to see. Should be here tomorrow.
Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 09:09:54 pm
Cool on pics because I still wont buy their stuff.
Title: Re: Stihl 290/390
Post by: jmester on December 21, 2014, 09:19:11 pm
Cut you want the pics here or in the mako thread?
Title: Re: Stihl 290/390
Post by: Cut4fun . on December 21, 2014, 11:05:41 pm
Cut you want the pics here or in the mako thread?

I moved all my BS to mako thread. That way your thread is not all messed up with my BS.
Title: Re: Stihl 290/390
Post by: jmester on December 22, 2014, 06:16:45 am
Seems a better fit in the mako thread to me. The info you posted is of merit in this thread as it may help some one looking to buy an aftermarket p and c kit for there 290-390.  There are a lot of chocies when it comes to aftermarket. To know ones that are good and ones that are bad would be very helpful.
Title: Re: Stihl 290/390
Post by: jmester on December 24, 2014, 07:52:28 am
(http://i1250.photobucket.com/albums/hh535/jmester/imagejpg1-19.jpg) (http://s1250.photobucket.com/user/jmester/media/imagejpg1-19.jpg.html)

Muffler brazed back together and painted.
Title: Re: Stihl 290/390
Post by: jmester on December 24, 2014, 07:55:02 am
(http://i1250.photobucket.com/albums/hh535/jmester/imagejpg2-8.jpg) (http://s1250.photobucket.com/user/jmester/media/imagejpg2-8.jpg.html)

Flattening the cylinder. Was not near as bad as the engine pan. But I am glad I went over it.
Title: Re: Stihl 290/390
Post by: jmester on December 24, 2014, 07:56:17 am
(http://i1250.photobucket.com/albums/hh535/jmester/imagejpg1-20.jpg) (http://s1250.photobucket.com/user/jmester/media/imagejpg1-20.jpg.html)

The finished cylinder
Title: Re: Stihl 290/390
Post by: 660magnum on December 24, 2014, 09:17:19 am
Tell us about the looks of the coating in the cylinder, how high the coating goes up in the cylinder?

How do the ports look compared to your old cylinder?
Title: Re: Stihl 290/390
Post by: jmester on December 24, 2014, 02:21:39 pm
The coating looks good nice and smooth. The coating runs up as far as the the stock jug. I just eyeballed it. The port shape is very close to stock. It also appears the exhaust on the mako jug is larger than stock. But that maybe because it is a 310 jug compaired to a stock 290 jug
Title: Re: Stihl 290/390
Post by: 660magnum on December 24, 2014, 02:27:23 pm
Sounds good.

The other test for these aftermarket cylinders and the main problem with your original Hyway choice was that the piston skirt hits the crank counter weights so you need to fit the piston on the rod and turn the crank around a little and observe the skirt clearance?
Title: Re: Stihl 290/390
Post by: jmester on December 26, 2014, 08:38:59 pm
What are some thoughts on the clutch washer that is sandwiched between the oil driver and the clutch. Can you run with out it? Or does it help to divert the clutch heat away from the plastic pump driver.
Title: Re: Stihl 290/390
Post by: 660magnum on December 26, 2014, 09:09:52 pm
You need the washer.

Not only does it keep dirt, sawdust, & oil out of the clutch, it also acts as a spacer.

The clutch bell will be sloppy back and forth without it.
Title: Re: Stihl 290/390
Post by: jmester on December 26, 2014, 09:15:31 pm
Thanks 660
Title: Re: Stihl 290/390
Post by: brettl on December 31, 2014, 11:57:02 pm
Great thread. Kevin, that shot of a 034/036...do you know whether that was from a current production run or an older?
Title: Re: Stihl 290/390
Post by: 660magnum on January 01, 2015, 12:54:57 am
The MS360 came out in 2001 and has not been made since March of 2004 and was replaced by the 361 until 2010

The 036 came out in 1993 until March of 2001

The 034 came out in 1984 and the Super in 1993

There was eventually a MS340 at one time and I'm assuming from April 2001 until March of 2004?

The MS362 came out in March of 2010
Title: Re: Stihl 290/390
Post by: brettl on January 01, 2015, 02:19:40 pm
I should have written that thread better. I was referring to the shot Kevin showed of Mako aftermarket cylinder and piston.

I've got the old 036 Pro, arguably the best all around firewood saw they ever made. Got my eye on a 034 Super/036 too that I found local.
Title: Re: Stihl 290/390
Post by: 660magnum on January 01, 2015, 02:42:26 pm
+1
Title: Re: Stihl 290/390
Post by: jmester on January 01, 2015, 04:48:18 pm
Will to much ignition timing give you a rough idle. Meaning kind of all over the place. The saw sounds good and runs good just thinking I got the timing a little to advanced.
Title: Re: Stihl 290/390
Post by: 660magnum on January 01, 2015, 04:55:30 pm
Too much advance seems to have a couple symptoms . . .

One is that the saw will backfire and snatch the pull handle through your fingers.

The other thing they will do is make a popping sound when lightly loaded & free running and tend to be almost four cycling.
Title: Re: Stihl 290/390
Post by: jmester on January 01, 2015, 07:15:00 pm
free running and tend to be almost four cycling. can you explain a different way not sure i am following you.
Title: Re: Stihl 290/390
Post by: 660magnum on January 01, 2015, 07:43:09 pm
In this case I'm used to a chainsaw engine powering a model airplane.

You take off and get up to altitude, level off and throttle back to half throttle.

The engine is not pulling hard and will tend to go into four cycling because it is lightly loaded.

The engine will start making a popping sound if you have the timing up around 35 degrees before top dead center.
Title: Re: Stihl 290/390
Post by: jmester on January 01, 2015, 08:47:29 pm
I got what you mean now. Thanks for clarifying.
Title: Re: Stihl 290/390
Post by: 67L36Driver on January 15, 2015, 01:12:27 pm
I just purchased a 49mm complete engine from Hutzl.  Purpose is to make a MS290 worth it's keep.

Any 'gotchas' or pitfalls to my plan?
Title: Re: Stihl 290/390
Post by: 660magnum on January 15, 2015, 01:14:36 pm
Make sure the piston skirt clears the counterweight
Title: Re: Stihl 290/390
Post by: 660magnum on January 15, 2015, 01:18:40 pm
Bolt holes are not always the right size or threads in the past.
Title: Re: Stihl 290/390
Post by: 67L36Driver on January 22, 2015, 01:45:28 pm
China air filter covers are a poor fit.
Title: Re: Stihl 290/390
Post by: Fish on February 11, 2015, 09:33:17 am
Looks like those are 029 air filter covers, on Ms290s
Title: Re: Stihl 290/390
Post by: 67L36Driver on February 11, 2015, 11:03:23 am

Looks like those are 029 air filter covers, on Ms290s

I've since discovered the two styles of cover.  Lever and round knob. 

Possibly early and late production??   Flat with round knob and humped with lever.
Title: Re: Stihl 290/390
Post by: Fish on February 12, 2015, 10:26:24 am
only 2 styles are humped and flat on the Stihls, I won't speculate on the Chinese junk.
Title: Re: Stihl 290/390
Post by: jmester on March 22, 2015, 08:12:45 pm
Working on a 390 the cast in key is sheared. What do you guys think line it back up and seat the taper well and torque it down a little tighter then the torque spec in the sm or hunt down a used one to put on there?
Title: Re: Stihl 290/390
Post by: Cut4fun . on March 22, 2015, 09:04:31 pm
Me with cast in keys that are gone broken  or ground off. I just line up tighten. I never torqued them with a torque wrench before.

Making sure both mating surfaces are clean clean clean.
Title: Re: Stihl 290/390
Post by: jmester on March 22, 2015, 09:07:42 pm
That was what is was thinking as well. Thanks for the reassurance.