Huztl MS660

[Ash UK Chopper]

no yes, its silly not to be testing these things otherwise its just stabbing in the dark and spending money ham sam

 

[Bedford T]

We new to this have to try harder. Davhul is a pro. He could slip that rubber in between with a 90% success rate. I was ready to shoot my saw. I got it...Finally. but bought the thing the next day.

That nipple is
0000 855 9200

 

[Bedford T]

UK Chopper we might have forgot to answer part of your questions on the rubber. i attached a photo of one and it i think it needs to be more than 2.5mm thick. the measurement in the photo is inches. i put up a photo of the flange installed too, just for giggles.

the black hose by the nut on the flange is where you can test the fuel circuit from. both pressure and vac from that one spot. with OEM fuel cap on.

the flange has a screw at the bottom and goes in and blocks the impulse. just to give you an idea of its setup. the screw head is peeking from underneath the clear hose.

 

[Ash UK Chopper]

So no need to block the impulse line with a screw as the test flange does the blocking for me. I'll be sure to test evening once this vacuum pump arrives. Probably be week after next.

 

[Bedford T]

So no need to block the impulse line with a screw as the test flange does the blocking for me. I'll be sure to test evening once this vacuum pump arrives. Probably be week after next.

While you are at it, when you are done, remove the flange first and attach your pump to the impulse line. Gently turn your ... Flywheel...or whatever, and watch the dial. It should bounce.

What you will have witnessed is the carb pulse. Drives the diaphragm in your carb. That is a great step so when it's time to cut wood you know all systems are good. And later an important peridoic maintenance test.

edit
here is a photo of the exhaust test plate that is potentially better than the stihl test plate...in that it is solid and a thinner piece of rubber would work to complete the seal. ebay

 

[Ash UK Chopper]

All good stuff.

I could make a exhaust plate out of sheet steel if push comes to shove

 

[weimedog]

The "davhul" chain adjuster "fix"...

 

[davhul]

Good vid weimdog couldn't said it better myself you always have good videos. It seems to work with the huztl adjuster also. But I've only really tested it with the oem and so far so good. Thanks again for your great videos [emoji106]

 

[weimedog]

Actually thank you for advancing the state of the art on these builds... Going to try to shim both ends on the Chinese adjusters. The OEM actually have a slightly larger diameter and might be why I had better luck with them vs. my material theory...simply geometry. Also why I had to drive those bushings on the OEM vs. them just sliding onto the Chinese ones. Diving head long into the Carb thing next. Definitely going for a more complete set of letter drills and wish I could replicate that one carb vs. having to drill fixed jets. Having fun with that "bling" saw BTW...goofy and impractical almost ridiculous as it is..its a blast to run! I would be curious to see your cut on trying to debug those carbs that don't work from China...is it the throttle plate?? Internal chips left from manufacturing? Tolerance issues? Wonder if we are going to drill them anyway, its worth pulling the plugs opening the passages a tiny bit and using them on future "bling" saws...thoughts??

Also hoping "Definitive Dave" finds more of those intake deals...if not I will make some from bar stock. Was thinking of a way to cut a cover to allow that filter to hang out and fasten the modified cover to the air box (The screw in the middle would be gone )....might keep some of the chips and dirt away from those carb and switch parts.

 

[davhul]

I must have missed the issues with the Chinese carb problems. The only issues I had was a high idle. Fixed mine by loosing the throttle plate and letting it realign then retighten.
My only other issue in that area was the control lever. When moving from choke to high idle it would skip straight to idle. That ended up being to much play in groove the control lever sat in. Everything else seems to work like it should.

 

[weimedog]

I must have missed the issues with the Chinese carb problems. The only issues I had was a high idle. Fixed mine by loosing the throttle plate and letting it realign then retighten.
My only other issue in that area was the control lever. When moving from choke to high idle it would skip straight to idle. That ended up being to much play in groove the control lever sat in. Everything else seems to work like it should.

Seems like the Carbs I had from 2 years ago were a mixed bag, and also seemingly from different sources. The ones I had issues with would start & run, just it was impossible to get those saws to idle, even with high idle & playing the low speed adjustment end to end. At first I was certain it was either the freeport issue, an air leak, or something I had done when I was building them or messing with the intake port timing. BUT realized the problems followed the carbs...pitched them and replaced some with MORE Huztl's that did work on some, and on my work saws, Walbro's. Bling saw has a Huztl sourced carb right now (Had a Walbro on it for a bit..worked fine) & needs more fuel, and while the carb is in fact doing its job, kind of made me go back and first relive the experience....Carb-PTSD and now with a slightly different perspective figure out what happened and understand it. AND hopefully build a plan on the AM carbs that works well both for the "as delivered" 54mm's and the tweaked 56's.

 

[67L36Driver]

Two main problems I've had with the aftermarket carbs are related to the pump diaphragm and metering lever spring.

The stiff plastic in the middle:

Is best replaced by the rubber fabric type.

And the metering lever spring:

Is too much preload and works better with a short OEM spring out of a Farm Boss Walbro.

That being stated, I had absolutely no issues with an AM carb on a MS170. Except for drilling some holes to access the mixture screws.

 

[Bedford T]

weimedog, its great to see that young fellow online, what's his name, was able to solve one of the problems you couldn't. young people are great aren't they? oh yea i remember now.

 

[weimedog]

And

weimedog, its great to see that young fellow online, what's his name, was able to solve one of the problems you couldn't. young people are great aren't they? oh yea i remember now.

And happy holidays to you and your family as well.....

 

[Bedford T]

And



You just wishing me happiness today. I am humbled again. More back to you.

 

[Bedford T]

Actually thank you for advancing the state of the art on these builds... Going to try to shim both ends on the Chinese adjusters. The OEM actually have a slightly larger diameter and might be why I had better luck with them vs. my material theory...simply geometry. Also why I had to drive those bushings on the OEM vs. them just sliding onto the Chinese ones. Diving head long into the Carb thing next. Definitely going for a more complete set of letter drills and wish I could replicate that one carb vs. having to drill fixed jets. Having fun with that "bling" saw BTW...goofy and impractical almost ridiculous as it is..its a blast to run! I would be curious to see your cut on trying to debug those carbs that don't work from China...is it the throttle plate?? Internal chips left from manufacturing? Tolerance issues? Wonder if we are going to drill them anyway, its worth pulling the plugs opening the passages a tiny bit and using them on future "bling" saws...thoughts??

Also hoping "Definitive Dave" finds more of those intake deals...if not I will make some from bar stock. Was thinking of a way to cut a cover to allow that filter to hang out and fasten the modified cover to the air box (The screw in the middle would be gone )....might keep some of the chips and dirt away from those carb and switch parts.

the ms660 just does not need a velocity stack. to me those adapters are like when you need a better filter than you can get on an 029 after an upgrade you put the stack on it and the stupid looking filter and hope you don't tear it off after snagging it on some branch out in the woods or you are cutting in some competition where the hat is not in the way. if dave does not get you enough stacks give madsens a call. they have them and your filters.

they also do have the max filter and it has a rain cover that would help keep the wood nasties out of the control box and does an efficient job of filtering the air. only requirement is if you like your saw is keeping that filter clean which requires work. Its just a better design. heres a link with hl.
http://www.hlsproparts.com/MaxFlow-Air-Filter-system-for-Stihl-MS650-M660-p/h51066.htm

 

[weimedog]

So are you selling parts and sawz yet? What happened to your business model of reselling ms660's

 

[weimedog]

Pretty familiar with the options actually. .. in reality i don't need 30 something sawz. and if you ask most of those i hang with i certainly don't need orange and white or am saws!!....but there they r. If your going to get all practical....my 365/372xpw blend i built a few years ago is about the most practical saw for my needs...but i still run the ms660...must be the old age thing... why do you need a 90cc saw? my bet is that 372 build would be most practical for u 2....one thats built, debugged and ready to work.. but here u r. Must be something else driving our desire to build these things.

 

[Bedford T]

i have not settled on anything. finding a manufacture that responds properly is not easy just look at the result of the cross line. ok but not great. i am looking for very good to great and i have not found the one, so not taken the plunge yet. farmertec i think the only thing they actually make is the jug and spark plugs. their jugs are sloppy another 5 minutes in the hands of someone with a foredom might do it. i feel confident the jug i got, got all scored up because i did not clean it up enough and i should not have to clean it up to that degree. biggest flaw is how they just dont care. if its close sell it. my ring chips the edge and scares it up. basic stuff. i know trboxman bought a foredom clone rather than ***** about it. but like a pressure gun we need a foredom to play. or something a little bit heavy duty to remove what should not be there. the jug i replaced it with was from HL and it was smooth out of the box so i know it can be done.

i pointed out the filter options for everyones benefit. researching the filters takes time and most folks dont find the time. yeah i keep everybody in mind when making a post not trying to take all you know for granted.

they are actually addicting. i used to build models, slot cars, later girls, much later r/c cars and now chainsaws. a great distraction. produces great satisfactiona and you can share your interest with others. you learn foremost and then teach. only other thing like it was girls and at my age this is safer

 

[Philbert]

64 pages! W O W - is my mouse clicking hand tired!

Thanks for all of the detailed input and insight.

Philbert