Lawnboy mower will not start

Reply

  #1  
Old 05-16-06, 08:02 AM
Member
Thread Starter
Join Date: May 2006
Posts: 7
Lawnboy mower will not start

I have a Lawnboy Silver Pro, 6.5 HP Model 10324 serial number 8900265, which cannot get started.
The exhaust is clear.
The sparkplug is new.
Have installed new carb repair kit.
Attempted to clear ports and orifices.
It is not getting fuel. Looks like the only adjustment is the float height, and not sure how to set the proper height, if that is a option.
 
Sponsored Links
  #2  
Old 05-16-06, 11:36 AM
puey61's Avatar
Member
Join Date: Apr 2004
Location: Upstate New York
Posts: 3,224
You stated you "attempted" to clear the "port". Did you actually clear it? Was it the exhaust port? While you were there, did you visually inspect the condition of the piston and cylinder? If so, what's your assessment of them? If everything you've done was done well and you still have a fuel starvation problem, I'd say you have a scored piston and cylinder whereas you will have insufficient vacuum to draw in the fuel mixture.
 
  #3  
Old 05-16-06, 01:28 PM
lexmarks567's Avatar
Banned. Rule And/Or Policy Violation
Join Date: May 2006
Location: Warren MI
Posts: 610
compression test

hes right do a compression test remove the sparkplug and install the tester some you will have to hold in the sparkplug hole others you just screw in. crank the engine a few times and see what reading you get you want at LEAST 90 PSI if its below that toss it a engine will run on low compression just not very good

Originally Posted by puey61
You stated you "attempted" to clear the "port". Did you actually clear it? Was it the exhaust port? While you were there, did you visually inspect the condition of the piston and cylinder? If so, what's your assessment of them? If everything you've done was done well and you still have a fuel starvation problem, I'd say you have a scored piston and cylinder whereas you will have insufficient vacuum to draw in the fuel mixture.
 
  #4  
Old 05-24-06, 07:31 AM
Member
Thread Starter
Join Date: May 2006
Posts: 7
Finally had a opportunity to check the compression on the Lawnboy. It is 90 psig with a hand held gauge. May be more, but at least 90 psig. Is that enough?
My though is that the float is improperly adjuster? It runs for a few rpm's with a shot of WD40 in the cylinder? It's just not geeting fuel? Help.
 
  #5  
Old 05-25-06, 01:12 PM
Member
Thread Starter
Join Date: May 2006
Posts: 7
Originally Posted by lexmarks567
hes right do a compression test remove the sparkplug and install the tester some you will have to hold in the sparkplug hole others you just screw in. crank the engine a few times and see what reading you get you want at LEAST 90 PSI if its below that toss it a engine will run on low compression just not very good

I finally ran a compression test. It is 90 psig. Could the float height be the problem? Not sure what the measurement should be?
Gene
 
  #6  
Old 05-25-06, 07:41 PM
michaeljp86's Avatar
Member
Join Date: May 2005
Location: USA
Posts: 478
I had this problem on a 2 cycle lawn boy and there was gunk blocking the ports in the carb. Some carb cleaner sprayed through fixed that. Im not familiar with that engine but I had a 12.5hp briggs and I took the float bowl off and moved float by had to make sure it was letting fuel in and stoping it. If you have the float down and no gas is running out then something is blocked.
 
  #7  
Old 05-25-06, 11:36 PM
lexmarks567's Avatar
Banned. Rule And/Or Policy Violation
Join Date: May 2006
Location: Warren MI
Posts: 610
90 PSI is good thats perfect so that means you may have a bad carb or a very dirty and jamed up one as for the float those are not adjustible they are preset by the factory.




Originally Posted by Gene1025
I finally ran a compression test. It is 90 psig. Could the float height be the problem? Not sure what the measurement should be?
Gene
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes