Craftsman Rotary Lawn Mower Wont Start 7.0 HP Power Propelled 21

[reddragon]

http://www.hammerwall.com/Download_Manual/5384/ enter the scrambled letters and them click download.......i trying to find the gap specs......how did you find no spark....you pulled the plug and grounded the threads or?

 

[jeff]

I always use an old business card to set the gap. Works fine. If the flywheel nut was not tight enough, you may have sheared the key again.

 

[2011cb]

replaced magneto with new one and gapped with card included....still wont start....checked flywheel and key is good....starting fluid doesnt help....only getting a puff or two of white smoke....regapped spark plug to .020 like manual said....

 

[2011cb]

ok I might be brain damaged...I looked over the carb and noticed moving the throttle actually doesnt change anythig on the carb...

 

[2011cb]

Hey hey....Its running BUT
ok so here is part of the deal.....this is a no adjust carb.....and the blade has a blade adapter peice on it....took out the air rachet and cranked that on!
now it is starting but runing like a bat out of hell and the choke spring and armiture dont seem to be doing anything....
almost there though
I did replace the fuel line with some older fuel line that higher a slightly higher diameter....could that effect anything....

ok just mowed for a few minutes ....IT is a 7hp and maybe it is running
as should but it does have a throttle control which isnt doing anything and I have a new cable on it.....
as you can see this has been a mission for me
But when I let off the handle and kill it ...it wont restart for say 10 minutes or until it cools down...

 

[reddragon]

ive had these magnetos die when they get hot....in fact ive replaced 3 of them this year...when it dies it has no spark?

 

[2011cb]

well it is strange I can run it for 1 or 2 min and stop..then it wont start but I also noticed the blade is coming loose every single time...going to go get a new bolt and lock washer...the one on there is
worn to a curve almost....Probably needs the real blade too instead of the adapter peice...

 

[reddragon]

and use a couple drops of locktite :smile:

 

[walter mullen]

Model 917-378770
I am helping a friend repair this mower. They said it wouldnt start. When you pull start it puffs white/grey smoke and eventually throws a hard kick back but wont start.
I rebuilt the carb with a factory Craftsman rebuild kit...new gas.....but it still wont start and
throws a hard kick back...if it were a car I would say the timing was off?
By kicking I should clarify it feels like it is trying to start backwards or something as it pulls rope back hard.

i would say by the sounds of things is timuing or air filter plugged fly key may be damaged top likely

 

[walter mullen]

Hey hey....Its running BUT
ok so here is part of the deal.....this is a no adjust carb.....and the blade has a blade adapter peice on it....took out the air rachet and cranked that on!
now it is starting but runing like a bat out of hell and the choke spring and armiture dont seem to be doing anything....
almost there though
I did replace the fuel line with some older fuel line that higher a slightly higher diameter....could that effect anything....

ok just mowed for a few minutes ....IT is a 7hp and maybe it is running
as should but it does have a throttle control which isnt doing anything and I have a new cable on it.....
as you can see this has been a mission for me
But when I let off the handle and kill it ...it wont restart for say 10 minutes or until it cools down...

running to fast check rpms 32 hundred