Small Engines (Lawn Mowers, etc.): tecumseh vm-80 8hp lawnmower engine, gasket kit, long periods of time


Question
i replaced all of the gasket son this ebgine changed the oil an dit wont start
but it also didnt start before i did this
i go tthe mower from a friemd and it was sitting in his garage for a long while
the engine is not getting gas and the carb is
i can push the realse vavle on the bowl of the carb and gas comes pooring out but when i look at the inside od the carb i see no trace of gas
can you help me?
-----Answer-----
 Hello Chase:

 From your Description I Suggest the Carburetor be Removed and Disassembled. Soak the Carburetor Overnight in Gunk Carburetor Cleaner and then Blow Out the Passages with Compressed Air. Install New Kit. When an Engine Sits for Long Periods of Time the Gas Turns to Varnish and Restricts or Blocks the Gas Flow Through the Jets Inside the Carburetor. Send me All the Model Numbers Off of the Engine, Please. With these Numbers I can Locate a Breakdown/IPL for you to View Online and for Reference if you Require more Assistance. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John



Hello john
i have alreday cleaned it and put a new gasket kit/rebuild kit for the carb but it still dosn't work im not sure what the clutch and choke settings should be at (closed open half) and im not sure how far each adjustment screw should be in it?

thank you
for your help
chase
-----Answer-----
 Hello Chase:

 If you Didn't Soak the Carburetor it is Most likely Not Clean. If it Set for a Long Time, the Gas Turned to Varnish and the Jets are Still Clogged. Spray Cleaning will Not Work. The Settings of the Air/Gas Mixture Screws are: Both Turn in to Seat. **DO NOT JAM SNUG ONLY** Now Turn Both Air Mixture Screws Out 1 1/2 Turns. Start Engine. With Throttle at Full, Set the High Mixture Screw for Proper Operation. *Use your Hand and Manually Move the Governor Arm to Increase Engine Speed to Set the High Air Mixture Screw or when you Put the Engine Under a Load (Cutting Heavy Grass) you May have to Adjust the Screw In. Once the High Mixture Screw is Set, then Set the Low Air Mixture Screw so there is No Hesitation when going from Idle to Full Throttle. Then Set the Idle if Required. You can View a Breakdown/IPL of the Engine at this Addy  http://www.outdoordistributors.com/ and Click the T. Then Select Tecumseh. Then Select Don't have Part Numbers. Then Enter the Model Numbers VM80. Then Select your Model Engine. This will Download a Breakdown/IPL of the Engine for you to View Online. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John




Thanks for your help john
i am going to go do that pretty soon but i have another question?
my front tires wer flat so i took of one of them off the rimm and then put it back on
i want to the good oll aircompresor and tried to fill it up but it didnt work. but the one that i didnt take off of the rim did fill up it has been a couple of weeks scince i took it off and it dosnt appear to be streatched in any place at all and it dosnt have a whole in the tire. so is there a mecnism or somthing that i can ot to clog the sides so i am sure no air can get out?


thnk you for your help

i realy appreciate it
scincerly
chase
-----Answer-----
 Hello Chase:

 If you are Trying to Inflate the Tire and the Gap between the Tire and Rim is too Large for the Tire to Seat to the Rim, then Take a Small Rope and Make a Strap Wrench. Put the Rope in the Center of the Tire Tread and Tighten the Rope. It will Force the Sidewalls Out and Connect with the Rim Until the Tire will Seal to the Rim. Loosen the Rope as you Inflate the Tire. If the Tire is Leaking Air Between the Rim and Tire over a Few Hours or Days, then Run a Bead of Silicone Around the Seat of the Tire. Inflate the Tire and then Remove the Excess Silicone. The Silicone Seals the Small Pits that May be in the Rim or the Tire. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John




Hi john
i got it to wrok bu ti didnt get your email umtil after wards. for the tire i put some fix a flat in it then pumped it up with the good oll air compressor. i soaed the carb one more time and found some dirt cloggong a whole. i need a new new gaske set for the carb the one i got was no good. so if you coudl help me on that and when i put the trans in first it was moving fine then in second same then in third same but i was in third for a bout 3 min when it stopped so i started it up again put it in first and it will move evry time the engine revs but it makes the soud liek your grindindg gears evern though im not and it is in gears also the engine dies still if i dont slowly move it to full throttle over a period odf liek 10 min and if i move it straight ther eit still dies
i ned some hel
and thanks for the help getting it running.
thank yuo very much
respectfully chase
-----Answer-----
 Hello Chase:

 Good the Tire is Fixed. Now for the Carburetor. You can Purchase a Rebuild Kit from your Local Small Engine Parts Supplier. Once the Carburetor has been Cleaned and rebuilt, you May Not have the Revving Problem. If you Do, then you need to Turn the High Air Mixture Screw Out 1/4 Turn. Send me the Model Numbers Off of the Tractor, Please. With these Numbers I can Locate a Breakdown/IPL of the Tractor and Better Assist you. Thanks.

 Respectfully

 John







Hey i already have the breakedoen ipl buti still ned an answer for may trans
? i stated in my last QUation. and how tight do you think i should have my head gasket on?
thank you for your help
i greatly apprectaite it
chase
-----Answer-----
 Hello Chase:

 I need the Model Numbers So I can SEE the Equipment in Question. Remove the Transaxle Drive Belt from the Transaxle Pulley. Turn the Pulley by Hand. Can you Feel any Grinding or Binding. The Pulley should Rotate Smoothly. If Not, then the Problem is Most Likely Inside the Transaxle. The Model Numbers will Assist me in Giving a Better Opinion. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John






Hey
my transaxles model number is 642
hope this helps
and how tight shuld my head gasket be
-----Answer-----
 Hello Chase:

 The Torque for the Head Bolts is 40ft Pds. Who is the Manufacturer of the Transaxle, Please. Is it a Peerless, Dana, ect.? Thanks.

 Respectfully

 John









perrless thanks
-----Answer-----
 Hello Chase:

 Remove the Belt from the Transaxle Drive Pulley. Turn the Transaxle Drive Pulley by Hand. Does the Pulley Turn Smoothly of can you Feel a Binding? You can View a Breakdown/IPL of this Transaxle at this Addy http://www.outdoordistributors.com/ and Click P. Then Select Peerless. Then Select Don't have Part Numbers. Then Select the Series 600. Then Select 600-648 File to Download. If All the Idler Pulleys are in Good Shape and are Not causing  the Grinding, Then you will have to Remove and Disassemble the Transaxle and Locate the Bad Bearing/Gear that is Bad. Be Sure to Inspect the Pulley on the Engine for Being in 1 Piece and has Not Worn into 2 Pieces.Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John







ok i fixed that but now when i start it and i try to move the clutch to full lor the throttel to full i shuttdown the engine what should i do ?
-----Answer-----
 Hello Chase:

 Is the Engine Shutting Off Like the it is Starving for Gas or like the Switch has been Turned Off? Check the Safety Switches. Open the High Air Mixture Screw 1/4 Turn. If the Engine is Starving for Gas the Air Mixture Screws May be Out of Adjustment. Set Both Air Mixture Screws 1 1/2 Turn Out from Seat. Then Run Engine at Full Throttle and Adjust the High Air Mixture so the Engine Runs Smoothly and Doesn't Bog Down Under a Load. Then Set the Low Air Mixture Screw so there is No Hesitation when Throttling from Idle to High. Then Set the Idle. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John








hey witch screw is the high mixture screw and which is the low? when i get it started which usaully takes a while and i leave it running on the throttle and clutch i left it on for about 2 min it shtts off like there is not enough gas getting to it fast enogh
-----Answer-----
 Hello Chase:

 If the Carburetor has a High Mixture Screw it is Usually Located in the Bottom of the Bowl. It has a Spring Around the Screw and Goes Up into the Middle of the Carburetor Bowl. The Low Air Mixture Screw is on the Side of the Carburetor Near the Idle Set Screw. If this Carburetor Doesn't have this Mixture Screw, then Clean and Rebuild the Carburetor. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John


hey
how many rpms do you think my 8 hp tecumseh can run at top speed?
-----Answer-----
 Hello Again Chase:

 The Red Line is 4000 RPM's. Some People Run Higher, but The Engines Don't Last Long. My Sons Go-Cart Runs at 3800 to 4000 RPM's and is 3yrs Old. No Problems as of Yet other than He's a Little Wild. Either in the Ditch or He Makes it All the Way to the Woods. LOL. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks. Be Safe.

 Best Wishes and Good Luck

 Respectfully

 John

 PS: Happy Thanksgiving and Merry Christmas (:-))





hi john
so if ai am building a racing cart frame say 100 pounds with a 52 tooth sproket on the engine and a 19 one the transmission and i have 7 inch tires so the toatal cart should way around 150 i sould be going areound 30mph right?
-----Answer-----
 Hello Again Chase:

 It's been a While, but I believe you to be Fairly Close. You will Find a Variation of Approx 5mph Either Way. Altitude, Terrain, Humidity and the Driver will All Effect the Outcome. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John



so on the road my gokart will go 5 mph
-----Answer-----
 Hello Chase:

 LOL  No. It should Travel between 20mph and 30mph. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John

 PS:  Happy Thanksgiving and Merry Christmas (:-))






any way to get it going faster?
-----Answer-----
 Hello Chase:

 If you Really Want More Speed and have the Tools to Do it. I will Tell you a Secret. It will Take some Work, but i have Seen it Done and Man did they Fly. Locate an Old 10 Speed Bicycle. Remove the 2 Gear Clusters and the Shift Assemblies. McGuyver them to the Engine and Axle. It can be Done. Now you can Really go. I'm Not Sure of All the Specifications on the Gear Clusters that were Used on the One I Saw at the Track. I do know that there are Several Different Ones. But he Shifted it Up and Down and Really Seemed to Enjoy the Ride. This was About 20 years ago. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks. Be Safe.

 Good Luck

 Respectfully

 John





hi john
i dont think th twill work
i am using a lawnmower transmission becase i a have a vertical shaft engine
-----Answer-----
 Hello Chase:

 Reduce the Size of the Sprocket on the Engine and this will Increase the RPM's of the Transmission Input Shaft. Rule of Thumb. The Closer the Two Sprockets are to the Same Number of Teeth the Higher the RPM' of the Smaller Sprocket. Remember Also that at a Certain Point you Will Lose Torque for Dead Starting. Dead Starting is Starting from a Dead Stop. When you Locate the Power Curve, you can Change the Engine Sprocket to Suite the Situtation you are going to be Using the Go-Kart for. Some People have 2 or 3 Different Engine Sprockets to Use Depending on the Track they will be Running at. Hope this Helps. I am here if you Require more Assistance. Let me know What Happens, Please. Thanks. Be Safe.

 Good Luck

 Respectfully

 John

 PS: Hope you had a Nice and Happy Thanksgiving. Best Wishes from Me and Mine to You  and Yours. John




hey john
well if i am goint to use i liek sproket spindel rigth
to take the chain from the bottom of the cart to this pulley shaft hingy then to the top of the pulley shaft thingy and to the trnsmision
you migth not og got th but if yuo did i owuld go big on the engine then smal on the bottom of the sprocket spinle thigy then big on the top of it then small again on the sprocket righ?


Answer
 Hello Chase:

 What kind of Rear End are you Using and What Kind of Transmission? If I Understand you, you are using a Transmission and the Go-Kart Rear End.  I was Thinking you were Using a Transaxle. If I Understand Correctly, you have the Vertical Shaft Mower Engine Connected to the Offset Transmission and the Offset Transmission Connected to the Go-Kart Rear End. Thanks.

 Respectfully

 John