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View Full Version : Stihl BR-550 very hard to start?

MikeKle
06-14-2009, 11:15 AM
I recently had my BR550 at the shop for a fuel line replacement( A problem that effects all BR models is what the dealer told me) After picking it up from him, I noticed it is hard to start, about 10-15 pulls. They said it fired up fine for them??? The air filter looks brand new and the plug is fine too. Any help would be appreciated. Thanks guys.
genesis215
06-14-2009, 07:39 PM
Hmmm. That's strange to say the least. Are you priming the bulb at least 5 times to get all the air out of the fuel before starting? Also, have you had the valves adjusted?
MikeKle
06-15-2009, 11:24 AM
Yes , I do push the primer about 5 times and no valve job yet, the blower is only about 16 months old. Im taking in to the dealer again!!!
genesis215
06-15-2009, 03:47 PM
Definitely do a valve adjustment if it is 16 months old. You need to do it every year. I did it on my BR 600, and it made a profound difference. Taking alot of pulls to start is usually a sure sign of needing the valves adjusted.
kogafortwo
06-16-2009, 07:38 AM
Definitely do a valve adjustment if it is 16 months old. You need to do it every year. I did it on my BR 600, and it made a profound difference. Taking alot of pulls to start is usually a sure sign of needing the valves adjusted.

Ditto. And it's not a valve job, it's just an adjustment with a 0.10mm (0.004") feeler gage. You can do it yourself in less time than it takes to drive to the dealer.
MikeKle
06-16-2009, 08:33 AM
How do I do the vavle adjustment with the feeler gage?
genesis215
06-16-2009, 02:18 PM
I probably should have taken pics when I did it to mine. But, there is another thread going on about this, and one guy on here has posted a video on how to do it. Here is the link. Hope this helps.

http://www.lawnsite.com/showthread.php?p=3045817#post3045817
topsites
06-17-2009, 01:00 AM
Bastards never gave me the special gauge, I had to make my own out of .102 mm steel.
But it's not hard...

To determine TDC what I did after pulling the plug I carefully inserted a metal rod through that hole.
Then watching the valves and the rod as I slowly pulled the engine...
Like I say thou, careful and slow so you don't "mark" the piston with the steel dowel.

The piston doesn't actually have to be perfect TDC so long the valves are closed, but I would recommend it.