ryans4022
ArboristSite Operative
Hello all, Im working on a stihl fs 45 trimmer. 120-130psi compression, new carb, fuel line and filter, great spark, good gas. Will pop on occasion while on choke. Its doing the same thing my fs55 did awhile back, it had alot of hours so i replaced the powerhead problem solved but this one has good everything. I dont see any scoring on the piston or cylinder. Im turning blue trying to start it!! Thanks in advance for the help! Ryan