Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: frenchi on October 11, 2013, 05:41:48 am

Title: What is it? help nooby 72 cc husqy high rev problem
Post by: frenchi on October 11, 2013, 05:41:48 am
I don't know how or where to look to see what model ,its old and as not let me down till now,all off a sudden as you start it goes into high revs I have striped it down to see if any thing is stuck,but not, so must be in carb any advise is welcome ,many thanks
Title: Re: help nooby 72 cc husqy high rev problem
Post by: jmester on October 11, 2013, 07:02:30 am
Could be a carb/fuel problem but I would look towards an air leak. If you post some pics we can help with the model  if there is no tag.
Title: Re: help nooby 72 cc husqy high rev problem
Post by: Adirondackstihl on October 11, 2013, 08:55:20 am
I would look towards an air leak.

+1
Title: Re: help nooby 72 cc husqy high rev problem
Post by: 660magnum on October 11, 2013, 09:00:20 am
Do you have a 272 or a 372?
Title: Re: help nooby 72 cc husqy high rev problem
Post by: frenchi on October 11, 2013, 09:25:15 am
all I can find on it is a professional,it also has a metal safety chain stop I mean old with a push down button on it to unlock ,when you say a air leak where from ,it was working fine and sounds great once you start it but it revs strait up when it starts it tries to rev but just revs right up is there a number or a way to tell what it is incase it needs a carb kit
Title: Re: help nooby 72 cc husqy high rev problem
Post by: 660magnum on October 11, 2013, 09:29:31 am
Sounds more like a 272?

There's still an air leak between the carburetor and the cylinder body
Title: Re: help nooby 72 cc husqy high rev problem
Post by: frenchi on October 11, 2013, 09:38:32 am
is this a gasket or instant gasket there is two long bolts that run through carb into head ,do I look here for trouble,
Title: Re: help nooby 72 cc husqy high rev problem
Post by: Cut4fun . on October 11, 2013, 09:45:33 am
What makes you think 71cc or 72cc chainsaw?   Could it be a 268  266 61 66 etc?

Look like this?   

husqvarna 272 IPL   http://www.jonsered.ws/272.pdf
Title: Re: help nooby 72 cc husqy high rev problem
Post by: Cut4fun . on October 11, 2013, 09:48:26 am
268 272 thread with pics to compare   http://chainsawrepair.createaforum.com/husqvarna/husqvarna-268/
Title: Re: help nooby 72 cc husqy high rev problem
Post by: frenchi on October 11, 2013, 02:12:21 pm
hope some one can say what machine this is i.e husqy what.also how to fix the problem off as you start saw,it then revs as high as it can with no control ,thanks fellers
Title: Re: help nooby 72 cc husqy high rev problem
Post by: SawTroll on October 11, 2013, 02:28:02 pm
Looks like a 266 (67cc) to me - but the most likely cause still is an air leak!
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: frenchi on October 11, 2013, 02:46:24 pm
will strip down and try tomorrow many thanks  :)
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: jmester on October 11, 2013, 06:38:39 pm
I am not that familiar with that model husky. Check carb connection,impulse line,fuel line. Cylinder bolts, last oil seals that seal around the crankshaft. Do you have the tools to vaccum/pressure check the crankcase? If not there are some guys on here that have some cheap and clever ways to get the tools you need. Hope this gives you a place to start.
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: frenchi on October 12, 2013, 02:11:49 am
thanks for that now I know where to start
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: frenchi on October 12, 2013, 07:09:53 am
yep yep yep ,,,running great there was loose bolts between carb and head ,now runs and starts revs great,,,thanks fellers
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: jmester on October 12, 2013, 07:40:07 am
Good to hear. Have a great weekend.
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: 660magnum on October 12, 2013, 08:03:34 pm
+1
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: brokenbudget on October 12, 2013, 08:18:15 pm
yep yep yep ,,,running great there was loose bolts between carb and head ,now runs and starts revs great,,,thanks fellers

don't get all happy and let your guard down yet. you should go back in there and put some new gaskets in there. it may be sealed back up for now, but they will start leaking again. ;)
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: jmester on October 12, 2013, 08:31:06 pm
Well said. +1
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: SawTroll on October 12, 2013, 09:13:36 pm
yep yep yep ,,,running great there was loose bolts between carb and head ,now runs and starts revs great,,,thanks fellers

Check the case bolts as well, just to make sure!
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: frenchi on October 13, 2013, 04:09:38 am
to be on the safe side can someone tell me what model this is or what gasket set to order ,,thanks again
Title: Re: What is it? help nooby 72 cc husqy high rev problem
Post by: KilliansRedLeo on October 13, 2013, 08:52:20 am
Looks like a 266 to me also. Intake gaskets are part numbers 501 25 09-02 and 501 51 19-02. The complete gasket set is part number 501 52 26-08.