QuestionQUESTION: Hi John,
Thanks in advance for answering my question.
I have a Stihl FS66 weed eater which is very hard to start when cold. I've checked and set the gap for the spark plug. The electrodes look fine, dry and have a whitish tint to them. The trick I've come up with to get it started is to prime the engine by pouring a little gas into the spark plug hole. Once it starts and warms up I can restart it effortlessly. However if I shut it off and let it sit for say 5 minutes I have difficulty starting it again. The choke lever has to be in the up position for the engine to start and keep running. There are no markings to indicate it the choke is ON or OFF in this position. Starting from a cold condition, I have to play the throttle to keep it going. Once it warm up it idles OK.
I hope the above information is enough to solve my problem.
tony
ANSWER: Hello Tony:
From your Description it Sounds like the Carbuetor Metering Needle Valve is Set Incorrectly or the Mixture Screws Require Adjusting. I Require the OEM (Walbro, Zama, ect) and the Model Numbers Off the Carburetor. With these I can Locate a Breakdown of the Carburetor and Better Assist you. Thnaks.
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: The only markings I found on the carburetor are the following:
Behind the air filter assembly:
M410
M4
On top of the carburetor:
Sthil
On the bottom of the carburetor:
83
These are the only visible markings. I searched the internet to find out which carburetor type was used for the FS66, but to no avail. Hope the above information gives you a clue.
AnswerHello Again Tony:
You can View a Breakdown/IPL of the Carburetor and Get Technical Information on Zama Carburetors at this Site Addy; http://www.zamacarb.com/tips.html and Select the Technical Guide. This Guide Might Assist you in Correcting the Problem with this Carburetor. All Trimmer/Chain Saw Carburetors are Basically the Same. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
