Chinese Decomp valve..your thoughts?

[altair]

Finished my mates MS660, on second startup the plastic top flew off the AM decomp valve. Luckily the stem didn't fall into the engine. When I unscrewed it it fell apart into my hands..would have destroyed the top end for sure.
Are the AM decomp valves normally okay? Or am I playing Russian Roulette using one? Bearing in mind from memory a Stihl decomp valve in NZ will be megabucks.
Cheers

 

[Ozhoo]

Absolute rubbish... either plug it or go oem.

 

[BuckthornBonnie]

OEM for sure.

 

[GrassGuerilla]

Oems are bad enough, many remove and plug those. Cheap knockoffs are like playing with fire.

 

[grack]

I plugged all 4 of my china 372s
The chinese decomps suck.
Button's fell off or they didn't work properly sometimes..
I put d ring handles on mine.
I like them.

 

[old guy]

I had the plastic end come off one also. No way it could have fallen inside, the holes too small, (Husky 372)

 

[Ted Jenkins]

I had one come loose early this spring. One moment it was running great then would not start. Finally discovered the plunger was about ready to go in to the piston. I machined a small grove near the top of the plunger and put a clip on it and then brazed the clip as a back up so it will not go into the piston. I looked for replacement decomp valve and found that they are hard to come by maybe for a $100, but have not looked lately. Thanks

 

[s sidewall]

Put one on a saw, lasted one cutting before the button disappeared. Maybe best to pull the button and epoxy it on.

Steve Sidwell, Samsung On5 using Tapatalk

 

[alexcagle]

+ 1......

 

[ChoppyChoppy]

No issues here with the aftermarket ones. Have one on a 360 and 460 and Husqy 288. All the saws have plenty of hours.

Guess I'm lucky?

I normally use them, didn't used to but kept breaking recoil parts or the rope even.

 

[Big Block]

+ 1......
View attachment 604498

LOL that's awesome.

Agree as well AM is total junk

 

[Little Al]

As said in an earlier post I use AM but pulloff the plastic cap drill the shaft & insert a spit key ring loop the type you have to insert & wind through 3 or so turns to wind it fully on

 

[altair]

Cheers guys, finding out price of Stihl one tomorrow..will be interesting.

 

[redunshee]

Only issues I've had is them leaking when doing a pressure test.

 

[tallguys]

Chinese? They're made in China... enough said.

 

[paul99]

The plastic top also popped off the valve supplied with my 660kit after 2 tanks or so. I was expecting it to happen and was going to just plug the hole but I didn't see no harm in attempting a fix first by making a new top as per this post: http://www.arboristsite.com/community/threads/huztl-ms660.300307/page-131#post-6217621

I'll take a photo at some point but it's very very similar (I'm not creative at all but can copy good ideas) It took all of 20 mins on the lathe (I'm just a beginner machinist). Can't remember the stem diameter off the top of my head but just made the fit as tight as I possibly dare - added some permanent threadlock and pressed it on. 10+ tanks later its still firmly attached with no sign of it coming loose...

 

[Big Block]

What about an Echo brand they looked well made.

 

[Ozhoo]

What about an Echo brand they looked well made.

Quality part but you can get 2 Stihl decomps for the price.

 

[Big Block]

Quality part but you can get 2 Stihl decomps for the price.

Ouch!