bsdubois
ArboristSite Lurker
Does anyone know the correct torque value (Nm/inch pounds etc) for the flywheel nut on the Stihl MS-180? I made some major mistakes (my Dad used to say costly learning) with this saw. I decided to disassemble it to replace the oil line on the bottom of the saw (no shop manual and I did not find this forum until now). First dumbass move. I purchased the Stihl cylinder stop (special tool) for my Dad's 030, 020 and my 015 years ago. I used it on the Ms180 and bent the top of the soda can thin piston and left a small hole in the top of the damn piston. The saw set unassembled for about 2 or 3 years. I found on OEM piston on eBay, purchased it and reassembled the saw. I found 99% of the parts and purchased the missing part for less than $10.00 at my local dealer. I thought I had the nut tightened enough on the flywheel. I started the saw several times and it ran better than new. The last time I stopped the saw I hear the sickening sound of the flywheel breaking loose. It wiped out the chicken **** cast aluminum key. I suppose it would have cost Stihl too much to have cut a keyway in the flywheel and inserted a small, replaceable, key. I know you can'/t fix stupidity... and, at 60+, I should know better than to pull a stupid move.
Final questions: Is it ok to attempt to hold the flywheel with a rubber strap wrench while I torque the nut to the proper value? I know better than to use the spark plug stop that was designed when Stihl actually made decently built saws and not the plastic junk they currently sell. I don't want to use the rope in the cylinder technique after seeing photos of bent connecting rods. I don't want to use an impact because of the warning mentioned by various Stihl dealers/users on this forum. My goal is to reassemble the saw without any further stupid mistakes.
Please overlook the length of my first post. I will attempt to be more succinct in the future (assuming you don't kick me off for my first post). I hope I posted this to the correct thread. Please move and advise if I made a mistake.
Thank you for allowing me to join this group. I look forward to your replies and suggestions.
Sincerely,
Brían S. Du Bois
Evansville, IN
Final questions: Is it ok to attempt to hold the flywheel with a rubber strap wrench while I torque the nut to the proper value? I know better than to use the spark plug stop that was designed when Stihl actually made decently built saws and not the plastic junk they currently sell. I don't want to use the rope in the cylinder technique after seeing photos of bent connecting rods. I don't want to use an impact because of the warning mentioned by various Stihl dealers/users on this forum. My goal is to reassemble the saw without any further stupid mistakes.
Please overlook the length of my first post. I will attempt to be more succinct in the future (assuming you don't kick me off for my first post). I hope I posted this to the correct thread. Please move and advise if I made a mistake.
Thank you for allowing me to join this group. I look forward to your replies and suggestions.
Sincerely,
Brían S. Du Bois
Evansville, IN