Lawnmower power loss

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  #1  
Old 04-20-08, 11:41 AM
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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?
 
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  #2  
Old 04-20-08, 01:55 PM
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Can you post the Toro model number along with the engine model type and code numbers so we can see what you have ?
 
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Old 04-20-08, 02:57 PM
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Toro SR4 Super Recycler Personal Pace Self Propel 21" Model 20055; Briggs & Stratton Model Series 120000 (190cc)
 
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Old 04-20-08, 04:05 PM
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OK, Question time.

What color was the smoke ?

Have you checked the oil level and is it over full/possibly smells like fuel ?
 
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Old 04-20-08, 05:47 PM
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grey/white smoke; oil is overfull and may smell like fuel
 
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Old 04-20-08, 06:44 PM
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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
 
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Old 04-20-08, 08:19 PM
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Thanks for the advice. There is a primer bulb for cold starts.
 
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Old 04-20-08, 08:29 PM
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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
 
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