Question about Poulan 42-Inch Steel Deck 17.5 HP Briggs & Stratton I/C Engine With 6 Speed
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Posted on Jan 02, 2017
Can you Regulate the Engine Speed Using the Governor Arm? If Yes, then Reset the Governor. **To Reset the Governor; Loosen the Governor Arm Bolt and Turn the Governor Shaft Clockwise Until it Stops. Using the Governor Arm Hold the Carburetor to Full Throttle. Now with the Shaft Full Clockwise and the Governor Arm and Carburetor Held at Full Throttle, Tighten the Governor Arm Bolt. If the Engine Still Runs Full Throttle, then Reverse the Rotation of the Governor Shaft, but Still Hold the Carburetor at Full Throttle with the Governor Arm. If it Still Runs at Full Throttle, then Check the Internal Governor.** If you Can Not Regulate the Engine Speed Using the Governor Control Arm, then Check the Carburetor Throttle Valve. If the Throttle Control Valve (sometimes called a Flap or Plate) Mounting Screws Came Out of the Control Valve, then you will have No Control Over the Engine Speed. Send me the Model and Type or Spec Numbers Off the Engine, Please. With these I can Locate the Proper Manual and Better Assist you. **The Throttle Cable Attaches to the Throttle Control Bracket. The Cable Moves a Slide that Moves a Pivot. The Pivot has the Spring Attached to it and to the Governor Arm. The Solid Link Connects to the Governor Arm and goes to the Throttle Shaft on the Carburetor. When the Throttle Cable is Moved it Moves the Pivot and the Pivot Pulls the Spring. The Spring Pulls the Governor Arm and the Governor Arm Moves the Throttle Shaft. Usually the Spring is in the Lower Hole in the Governor Arm and the Solid Link is in the Top Hole of the Governor Arm.** If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens
Posted on Sep 24, 2008
Most all manufacturers have the Users Manuel available on line you will need the Make and Model to pick the correct one. Have you replaced the battery. It can show the correct voltage but have no cranking amps. I believe if the solenoid is trying to engage the Dead Man switches are closed. With the starter disconnected from all power sources do the teeth on the starter turn or are they locked up? If they refuse to move do you have an Auto Zone around or another parts store or electrical engine repair store that can test the starter. Make sure the mowing deck is not engaged while you are trying to start the engine. I hope these rudimentary suggestions help.
Posted on Jul 18, 2009
Remove spark plug
Remove cover from engine that covers the flywheel
Remove rockerarm cover or valve cover
Find TDC (top dead center) by rotating the flywheel by hand and your finger over the spark plug hole as you rotate the flywheel you will feel pressure against you finger at some point then stop.
This is the compression stroke it is called now find a long slim round piece of plastic or plastic ink pen to stick in the spark plug hole (If you are careful a slim screwdriver can be used ) and find the piston top, then slowly rotate flywheel again (cw) as the piston is moving up pushing the plastic up as you rotate the flywheel slowly.
a max. piston up or tdc as you turn you will feel and then the piston starts to go the other way,at that transition this is tdc (piston is on top of stroke) leave it there,,both valves should be closed at that point.
Have a feeler gauge and set the exhaust valve at a loose .002 and the intake a loose .004 be sure engine is cold when valves are adjusted
Feeler gauge goes in between the rocker arm tip and valve stem top for each valve setting.
Note the rocker adjustment at the push rod side of each valve by tightening and loosening to make adjustments,lock your adjustments in place and rotate flywheel a few times and recheck settings
Posted on Sep 20, 2009
it could be worn out piston rings letting unburnt fule past into the sump oil
Posted on Jun 20, 2010
Testimonial: "Thank you for theinformation. I did suspect it may be the Piston Rings but I always thought you would get heavy smoke from the exhaust if the rings were going??"
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