My stihl fs45 is not starting.Has new spark plug.but apears to have weak spark.Colr of spark is not purple,it's a silver color.I think coil needs replacement .

Paul Evans

• 50 Answers
• Posted on Feb 14, 2009

SOURCE: Stihl FS85 Weedeater

I suspect carb. trouble. Is the compression OK? Look at the spark plug after trying to start it. If it is wet, you are getting too much fuel. The white smoke indicates that. You may need to overhaul the carb.
Go on the Stihl site and customer service for information.

SOURCE: stihl fs45/weedeater it starts then dies /it ran

you need to reset the carb. a and b screws

SOURCE: starts then dies stihl fs45/weedeater

I sounds like it sucked up some debris in the bottom of the fuel tank and obstructed fuel flow somewhere. Start by blowing out the in-tank fuel filter (You will have to fish it out with something), then load the line with carb cleaner (wear safety glasses) put fuel filter back in line and crank it a few times to pull the carb cleaner into the carb. This may dislodge the obstruction. If this doesn't work, you will have to remove and cleant he carburator. Hope this helps.

SOURCE: STIHL FS110R weedeater won't start, does not hit

my son flooded out my stihl weedeater, I took it had a new filter put in and it started right up. he went to use it again and now it wont start! It sat overnight and i still can start it! Any suggestions please

SOURCE: Stihl FS45 will not run at full throttle

possibly spark arrestor in muffler.screw out check gause for carbon build up,clean and refit