QuestionThe muffler is ok. I'm not sure about the valves. The Model is 110908, Type is 030901, and the Code is 80102104. It's a standard vertical shaft 4hp motor with a PulsaJet carb that came on a Snapper 21" HiVac mower.
Matthew
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Followup To
Question -
Thanks for your prompt reply. HOwever, the engine in question has a PulsaJet carb. There is no float. Therefore, I would appreciate a follow up to my original question about the carb flooding, etc.
I'll try a torch on the pulley. Thanks for that suggestion.
Matthew
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Followup To
Question -
I have a Snapper 21" HiVac (21400P) with a B&S 3.5HP engine (110908).
I have been trying for some time to get this engine operating properly. I rebuilt the carb several times (resetting the choke position to full open before I tightened the carb screws), and I even acquired another used carb to test on it, because I suspected I might have had a warped tank.
However, same thing continues to happen in all cases - I get a very rich mixture and repeated flooding. I can restart the engine after a little effort by manually holding the choke plate open and spinning the starter. It runs rough and, when I attempt to put the air filter back on, it always floods out.
When I look into the throat of the carb while it is running (looking down through the air intake tube), I can see an uneven stream of gas coming up from and through the carb fuel supply nozzle. Usually, a few large drops of fuel will bubble up and choke out and stop the engine.
Could this be some problem with the way I installed the carb linkage? After much study, I can only see one way to do this. Is it possible its a timing issue?
Also, one other question - Any tricks to removing very tight set screw on a pully (the one under the mower above the blade)? As tight as it seems to be now, I am sure I'll break the allen key in it.
Answer -
Hello Matthew:
1- From your Description, I Suggest you Check the Carburator Float Level. It Sounds like the Float or the Float Needle isnt Working Properly. Either the Float is Set to High, Allowing the Carburator to Flood or the Float Needle Isnt Seating Properly and Allowing the Carburator to Flood. 2- To Remove the Set Screw in the Lower Crankshaft Pulley, you will Need a Torch. Heat the Pulley Around the Allen Set Screw and Once it is Hot Enough the Set Screw will Release and Come Out of the Pulley. Polish the Shaft with Emorey Cloth Before Trying to Remove the Pulley from the Shaft. Hope this Helps. Let me know what Happens, Please. Thanks.
Good Luck
Respectfully
John
Answer -
Hello Matthew:
1- Check the Valve Lash. 2- Check the Muffler and Exhaust Port for Blockage. 3- Send me the Type Numbers Off of the Engine, Please. The Model and Type are required for me to View a Breakdow of this Engine and Carburator. Thanks.
Respectfully
John
Answer Hello Matthew:
Check the Gas Tank Cap and Ensure it is Venting the Tank Properly. From the Diagram I see this is the Tank Mounted Carburator. With this Style Carburator, the Cap, a Hole in the Diaphram or the Valve Clearance needing to be Set are the Only things that will cause the Problem you Described. You can go to this Addy http://shop.briggsandstratton.com/BShopProductListingPage.asp?rsvp=0&PARENTID=0& and Enter the Model Number 110908 and Type Numbers 0309. On the Next Page Scroll Down to the 2nd Listing and Click View PDF. This will Download a Breakdown of the Complete Engine for you to View Online. Hope this Helps. Let me know what Happens, Please. I really like knowing the Outcome. Thanks.
Good Luck
Respectfully
John
