Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

Lawnmower power loss


rickandlisa99's Avatar
Member

Join Date: Apr 2008
Posts: 4
MO

04-20-08, 11:41 AM   #1  
Lawnmower power loss

Toro SR4 with Briggs & Stratton engine; during last use, started smoking and lost much of its power; starts fine and continues to run with very low power. What are the likely required repairs?

 
Sponsored Links
31YTech's Avatar
Member

Join Date: Feb 2008
Posts: 1,263
FL

04-20-08, 01:55 PM   #2  
Can you post the Toro model number along with the engine model type and code numbers so we can see what you have ?

 
rickandlisa99's Avatar
Member

Join Date: Apr 2008
Posts: 4
MO

04-20-08, 02:57 PM   #3  
Toro SR4 Super Recycler Personal Pace Self Propel 21" Model 20055; Briggs & Stratton Model Series 120000 (190cc)

 
31YTech's Avatar
Member

Join Date: Feb 2008
Posts: 1,263
FL

04-20-08, 04:05 PM   #4  
OK, Question time.

What color was the smoke ?

Have you checked the oil level and is it over full/possibly smells like fuel ?

 
rickandlisa99's Avatar
Member

Join Date: Apr 2008
Posts: 4
MO

04-20-08, 05:47 PM   #5  
grey/white smoke; oil is overfull and may smell like fuel

 
31YTech's Avatar
Member

Join Date: Feb 2008
Posts: 1,263
FL

04-20-08, 06:44 PM   #6  
Alright, It sounds like a piece of trash got under the float needle valve and caused fuel to flood through the cylinder then into the crankcase.

You will need to clean the carb, Take the carb. off then tear it down, Spray carb. & choke cleaner with the straw through ALL ports, passages and jets then blow it out with compressed air if available then re-assemble, Clean the fuel tank and flush/replace the fuel hose. Also don't forget to change the oil.

If you need more help doing this look on the front of the metal engine cover just above the spark plug (may have to pull the plastic cover up a little to see) there will be a model/type and code number stamped there. Would also need to know if this engine has a primer bulb for cold starting.

Good Luck

 
rickandlisa99's Avatar
Member

Join Date: Apr 2008
Posts: 4
MO

04-20-08, 08:19 PM   #7  
Thanks for the advice. There is a primer bulb for cold starts.

 
31YTech's Avatar
Member

Join Date: Feb 2008
Posts: 1,263
FL

04-20-08, 08:29 PM   #8  
With the primer bulb system you will need to pick up a new air filter base gasket, These are a little difficult with some age to get a good seal with a new gasket let alone a used one. Also don't over tighten these base screws.

You should be able to reuse the float bowl gasket/seal if you are careful when removing the bowl.

Good Luck

 
Search this Thread