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Tecumseh 4.5hp small engine timing alignment

Engine is on a Craftsmen Yard Vac.Removed base plate to replace gasket and the camshaft fell out.I see a mark on the cam gear but not on crank or crank gear.I Need to know proper alignment ,also on the bottom of the camshaft there is a plastic "banjo" shaped piece with a steel rod with ball end on it,It appears to be there to pump oil thru the camshaft,where it slides over the cam one side is tapered in,the other flat,which side goes toward the base plate? Lastly, any special alignment for the governor gear?

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  • LANDON DEAL Mar 03, 2009

    I HAVE TAKEN IT APART SEVERAL TIMES BUT I CAN'T figure OUT HOW TO ALIGN THE CAM SHAFT THE RIGHT WAY CAN ANYBODY TELL ME HOW? E-MAIL ME AT DEALLANDON@YAHOO.COM. THANKS...

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The banjo part is the pump - this should be a two piece unit - you will see a cutout in the base plate where the ball end fits into - by tipping the engine upside down while installing base plate you can manuver the ball into place - as far as the crank gear mark one tooth may look different then the rest or have a line on it . it has to be there also as far as the tapered banjo part it realy doesnt matter which way the taper faces

Posted on Oct 23, 2008

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Mulcher


Check and make sure that the engine is getting fuel. It's common when gas powered equipment sits for a while, the fuel tends to break down and gum up the internals in the carb. A little trick that I would do is to make sure that there is fresh fuel in the gas tank and using a small brass hammer, lightly tap the carb. body to see if it will free up the sticking float inside. Try not to tap on the float bowl or you may ding it up. If that doesn't work, the carb. will need to be removed and overhauled for proper engine operation. I would recommend using a gasoline stabilizer if equipment is going to be stored for some time. Hope this helps.

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1 Answer

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1 Answer

I have a rotary hoe with a Kirby Tecumseh model HK30 engine and I am trying to get it started but not having much luck. It has been sitting for about a year and I am not sure what to do next.


i have one of these motors and i got mine going by cleaning the carby changing the spark plug to a newer ngk br2-lm and putin a bit of petrol in the cylinder while the spark plug was out

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1 Answer

We just purchased a used Troy Bilt vac/chipper w/ a 5 hp tecumseh engine. Worked fine when we ''test drove'' it. Now that we have it home and are attempting to use it we noticed gas leaking out of the air...


If you go to troy-bilt.com, look at the bottom of the page. You can get owners/operators manuals online.

Sounds like a stuck float in the carb, which is a bowl shaped part more than likely right behind your air filter. That's what lets gas in when the engine is running. If you tap lightly with a screw driver on the bowl, it may remedy the situation. Would also suggest putting some carb cleaner in the fuel, probably about 2 tablespoons to a pint of gas, just to clean everything out.

Even if you cannot get the fuel to quit running out of the air filter, this is not a serious problem. If you feel secure enough, you can take a (probably) 1/2 inch wrench and carefully take the bolt off the bottom of the bowl. Unless you have a fuel shut-off in the fuel line this is going to be a messy process. Do not do it in the garage, rather in the driveway cuz you are going to get gas all over. When you get the bowl off there is going to be a "float" in there that will go up and down on the non-attached side. When you push it up that should stop the flow of gas. A little shot of carb spray cleaner around the needle may clean it up a bit and make the movement much less restricted.

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1 Answer

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It sounds like the motor is going bad. If it is electric, it may be time for a new one. If it is gas powered; It may be time for a engine rebuild.

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1 Answer

I need a skematic of a Tecumseh carburator,for a 6 hp engine,push mower,I took mine apart and I do not know how to put it back together.


You'll have to be more specific on the model and serial number. There are hundreds of them
But for a start this may help:

http://www.partstree.com/parts/?lc=tecumseh&mn=HH60-105106F&dn=EH501105106F-EN

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2 Answers

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1 Answer

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Does it have a primer bulb on the side of the engine? If so, it is probably a bad bulb, or the hoses connected to it. You can prime enough gas to start the engine and briefly run it, but the cracks in the bulb or hoses allow air to get sucked into the carburetor not gas. This is what kills the engine. You can pick up a repair kit at just about any hardware store for less than $10.

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2 Answers

Hi my craftsman lawnmower,model #944360480 is leaking gas through the air filter,muffler and I think the engine.I change the inlet needle seat,clip, also the float.Now it leaks gas in the same places after...


Hello:

If you Did Not Soak the Carburetor Overnight in Cleaner, then
>>The Following is a Basic File I Made for Cleaning Carburetors. Any Input is Appreciated. Even though the Carburetor Looks Clean, the Internal Passages May be Restricted with Varnish that Gas Causes to Build Up over Time.
>>Spray Cleaners Remove this Varnish in Layers, so Soaking is the Only Sure Way to Remove ALL this Varnish.
>>I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning.
>>You Only have to Remove the Bowl (if Applicable), Float Pin (if Applicable), Float (if Applicable), Needle Valve.
Remove Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed.
>>If you are Able to Remove and Disassemble the Carburetor and Keep the Gaskets Intact, then Usually these Gaskets can be Reused. The Only Parts you May Need to Replace is the Needle Valve.
>>The Float Needle Usually is Not Replaced Unless it is Not Operating Properly (the gas flow not shutting off and the carburetor is Flooding). Do Not Remove the Main Nozzle. This is a Pressed Fit and Removal is Not Required for Cleaning. Soaking and Blowing the Carburetor Out After Soaking will Clean the Nozzle.
>>Once Disassembled, then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts.
>>Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidental Spillage. Then Blow Out the Passages with Compressed Air.
>>***(Do Not Use High Pressure Air for the Zama Carburetors, they have Check Valves for the Primer and these are Usually Blown Out of the Carburetor if Not Careful. Allow the Zama Carburetor to Set on a Drip Pan and Dry)***.
>>****All the Carburetor Adjustments are the Same for Lawn Mower and Trimmers. There are Several Location for the Air Mixture Screws. The Idle Air Mixture Screws are Usually Located at the Top of the Carburetor Bowl and the Top of the Carburetor Body.****
>>If the Main Air and Idle Air Mixture Screws are Side by Side on the Side of the Carburetor, then the Idle Air is Nearest the Engine. The Main Jet Air Mixture Screw is Located in the Bottom of the Carburetor Bowl or Beside the Idle Air Screw on the Side of the Carburetor Body.
>>Some of the Older Model Carburetors have the Main Jet Mixture Screw Straight in from the Top of the Carburetor Body (this is Rare anymore). If you have Cleaned the Carburetor (Disassembled and Soaked Overnight in Carburetor Cleaner (I Use Gunk). Then Blow Out the Passages with Compressed Air and Install a New Kit if Required. Now Setting the Air Mixture Screws:
>>****Turn the Idle Air and Main Air Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns. Holding the Throttle Full Open, Start the Engine. Turn the Main Air Mixture Screw Clockwise Until Proper Revs are Obtained. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs. Now Allow the Engine to Idle. Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required. Now Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Reset the Engine Idle if Required.****
>>If This Carburetor has a Single Air Adjustment (Except Tank Mounted 9200 and 100900 Engine Model Carburetors), Use the Section Above that Pertains to Full Throttle RPM Air Mixture Screw and then Adjust the Screw if Required to Eliminate Any Hesitation when Throttling from Idle to Full Throttle.
>>For the 9200 Model Tank Mounted Carburetor Adjust the Air Mixture Screw Full In, then Reverse 1 1/2 Turns. Set the Throttle Lever to Full Throttle and Start the Engine.
>>Now Carefully Use 1 Finger and Open the Throttle Plate and Over Rev the Engine Slightly. If the Engine Over Revs and Does Not Struggle to Over Rev, then the Carburetor is Set. If the Engine Struggles to Over Rev, then Turn the Adjustment Screw In 1/4 Turn and Repeat the Over Rev Test.
>>If you Adjust to 1/2 Turns In and the Engine Still Struggles to Over Rev, then Return the Adjustment Screw to 1 1/2 Turns Out from Snug and Turn the Screw Out 1/4 Turn. Do the Over Rev Test. Continue this Process Until you have the Engine Over Revving without Struggle.
>>By Adjusting the Carburetor on this Style Carburetor Until the Engine Over Revs without Struggle, you have Adjusted the Air Mixture to the Best Possible Setting.
>>This file was Intended to Give you the Basic Carburetor Cleaning Instructions and May Not Reflect Your Carburetor Components.
>>If you have Questions, Please Ask. The links above Provide Good Directions on Cleaning the Carburetor. Make sure you use an Compressed Air to Blow through all the Carburetor Passages to make sure they are Clear.
>>1- http://www.repairfaq.org/samnew/lmfaq/lmclctc.htm
>>2- http://www.cpdonline.com/692509.pdf .
>>The Following is an Instruction File I Made for the Gas Contamination of the Crankcase Oil. Any Input Concerning the File is Appreciated.
>>Depending on the Engine Model, Usually the Gas in the Crankcase Oil or White/Blue Smoke is Caused by the Carburetor Float Needle Valve Not Seating Properly and Allowing the Gas to Flood the Carburetor and Engine. Then the Gas Seeps by the Rings and Enters the Crankcase and Contaminates the Crankcase Oil.
>The Smoking is Caused Not Only by the Flooded Crankcase but can be Caused by 1 of the Following; a Bad Diaphragm in the Fuel Pump, a Blown Head Gasket between the Cylinder and Push Tube Galley, the Crankcase Vent Stuck/Frozen/Broken or the Carburetor Flooding the Engine.
>>1- Clean the Carburetor and Replace the Float Needle Valve (and Seat if this Model has One). A- **Remove, Disassemble and Soak the Carburetor Overnight in Carburetor Cleaner (I Use Gunk). I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning. You Only have to Remove the Bowl (if Applicable), Float Pin (if Applicable), Float (if Applicable) and Needle Valve and Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed. Then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts. Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidental Spillage. Then Blow Out the Passages with Compressed Air. Install New Parts if Required.**
>>If the Carburetor Float Needle is Good, then; 2- Block the Outlet Port and Pull a Vacuum on the Fuel Pump. If it Holds Vacuum, then it is Good. If Not, then the Diaphragm is Busted and the Pump Requires Replacing. If the Fuel Pump is Good, then Check the Crankcase Oil for Gas Contamination.
>>If the Crankcase Oil is Contaminated, then Drain and Refill the Crankcase Oil with Fresh Oil.
3- **If the Mower has a Manual Gas Shut Off Valve: Check the Manual Cut Off Valve and Make Sure it is Cutting Off the Gas Flow to the Carburetor. A- If Not Stopping the Gas Flow, then Replace the Valve. B- If the Mower Does Not have a Manual Cut Off Valve: Install a Manual Cut Off Valve and Turn Off the Gas Flow when the Engine is Not in Use. These Carburetor Styles Tend to Allow Gas to Seep by the Rubber Tipped Needle Kit or the 2 Pc O-Ring Needle Kit. A I Believe I Said Before, I have Seen a Lot of these Problems and this is the Way I have Found to be Sure the Crankcase Oil Does Not become Contaminated with Gas Again.**
>>4- If the Valve is Good or has Been Installed, then Remove the Cylinder Head. On the OHV Engines the Head gasket will Blow Between the Cylinder and the Push Tube Galley. This Allow Oil to be Sucked Into the Cylinder from the Crankcase and the Extra Oil is Just Enough to Cause the White Smoke.
>>5- Check the Crankcase Breather and Make Sure it is Clean and Operating Properly.
>>6- If the Crankcase Breather Sticks, then Oil is Pulled from the Crankcase into the Carburetor Throat and this Causes the White Smoke.
>>7- If the Crankcase Oil is Good, then Check the Gas Tank Cap and Ensure it is Venting the Tank. If the Gas Cap is Not Venting the Tank, then Pressure Builds in the Tank and the Pressure Pushes Gas by the Carburetor Float Needle Valve and Floods the Engine and Crankcase Oil.
Please, Do Not Hesitate, If I Missed Something or 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, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

May 15, 2009 | Mulchers

1 Answer

Added new spark plug, fuel line is clear, start cable moves, new oil


Hello:

>>Here is a Basic Instruction File I am in the Process of Making. It will Might Say Mower, but a Snow Thrower/Blower is Powered by the Same Type of Engine, so the Diagnostics are Basically the Same. >>***Here are some Diagnostic Instructions to Do on the Engine to Locate the Cause/Cure for a Hard/Not Starting Engine. This Does Not Include a Problem with the Valves. If I Suspected the Valves are Involved, then a Separate File for the Valves will be in this E-mail. This is a File in the Making, so Any Input is Appreciated.
>>1- Check the Spark. If Not Firing, then Replace the Plug.
>>2- If the Plug is Firing, then First, Pour a Small Amount of Gas (1oz) Into the Carburetor Throat with the Throttle at Full. With the Throttle Still at Full, Try to Start the Engine. If the Engine Starts and Quits, then Make Sure the Gas is Free Flowing to the Carburetor. If the Gas is Free Flowing, then Remove, Disassemble and Soak the Carburetor Overnight in Carburetor Cleaner (I Use Gunk). I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning. You Only have to Remove the Bowl, Float Pin, Float and Needle Valve and Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed. Then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts. Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidental Spillage. Then Blow Out the Passages with Compressed Air. Install New Parts if Required.
>>3- If No Fire at the Plug, then Remove the Coil Shut Off Wire from the Kill Switch at the Engine Stop/Brake Bracket (where the End of the Stop/Brake Cable Attaches at the Engine). Check for Fire. If No Fire, then Remove the Blower Housing and Remove the Ground Wire from the Coil. Check for Fire. If Still No Fire, then the Coil is Bad. *On Some JD Model Mower the Engines Use an Igniter. Remove the Igniter and Coil and have your Local JD Dealer Test them for you.
>>* **On Models with Point Set, the Condenser is Bad and the Point Set and Condenser should be Replaced as a Unit. Make Sure the Point Set Plunger is Fully Extended when Setting the Point Set Gap to .020in.
>>** If there was No Response from the Engine When the Gas was Poured Into the Carburetor Throat and the Plug was Firing, then Check the Compression. If the Compression is Good, the Carburetor has Been Soaked and Cleaned and the Plug is Firing, then Check the Flywheel Key. If the Key is Damaged, then the Plug Firing is Incorrect to the Position of the Piston During the Compression (Power Stroke).
>>*** On the OHV and Some L-Head (Flat Head) Engines there is a Compression Release. The Exhaust Valve Clearance has to be Opened to .020in for the Compression Release Not to Operate; in Order to get a Correct Compression Reading.***
Please, Do Not Hesitate, 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, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

John

May 08, 2009 | Mulchers

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