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How to replace a welch plug behind the cambelt


Also known as core plugs.
Usually you would just tap them out with a screwdriver/hammer. Or if need be, puncture it with a small chisel and then prise it out.

To refit one: Clean the housing, smear some sealant around the hole. Place the plug into position and give it a good tap in the centre with a hammer. This 'spreads' the plug and makes it fit tightly.
welch plug Google Search

Feb 17, 2016 | Cars & Trucks

1 Answer

How do I get my Tecumesh Model H35-45430M lawn mower motor running. Have cleaned, soaked it in solvent that would take the hair off a mouse as well as trying with the choke full on which does not wet


You can over soak it and if you soak it in any strong solvent that does not affect gasoline solvent you have wasted your time. You should never need to remove welch plugs. With more information someone might be able to better advise you. Pull the plug and with an oil can or the like squirt a small amount of fuel into the cylinder and then screw the plug back in and see if it will start and run.

Nov 24, 2014 | Garden

1 Answer

Car is overheating but the hose to the radiator is not sucking in the coolant and the temp gage is on H. They say that the Welch plug is leaking should I purchase one or two. How many welch plugs are...


We call them freeze plugs in the US. It has at least 3 on each side.
But the bigger question is why the engine is running hot.
Low coolant level ? Faulty water pump or thermostat ?

Aug 07, 2013 | Nissan Maxima Cars & Trucks

1 Answer

What wrong with a stihl carb when it start but want at high rpm


It may not be your carb thats preventing it from accelerating to high rpms, it may be a clogged exhaust screen found in the end of the muffler. If this is clean, then you have to replace the diaphrams inside the carb. Also stihl has a recall on some of their carbs because of the welch plug inside the carb falling out. check to see if there is white sealant on the welch plug inside the carb or red. if it's white stihl will replace carb under warranty through a repair shop.

Nov 27, 2010 | Garden

1 Answer

LEAKING FLUIDS FROM PASSANGEGER SIDE OF THE MOTOR 3.8 SUPERCHARGE WE HAVE REPLACED THE WATER PUMP AND THE THERMOSTAT I HAVE M=NO IDEA WHAT IT COULD BE NOW


If the water seems to be coming out of the engine block itself it would be the welch plugs. To actually see them you either need detachable eyes or a flashlight and a small mirror. Welch plugs are brass plugs inserted into holes in the engine block. These holes were put there during manufacturing in order to clear the sand used in the casting process from the water channels. They do tend to rust through and replacing them can be a serious headache due to the diffyculty in accessing these plugs. Basically you would have to strip everything(ancilliary components, inlet, exhaust manifold) off the engine to replace one. It can be removed by hammering a screwdriver through one and wedging it out. Replacement entails using a circular drift to hammer it back in (after the hole has been cleared of rust)
Also bear in mind that if one is rusted through, then the others are not far behind. depending on the engine it could have any number from 4 to 10 of these in the sides of the block alone.
The picture shows a welch plug (circled) on a 26 year old Nissan without aircon, power steering or fuel injection and it is still the only one visible on the engine without removing components.ae1b161.jpg

Aug 23, 2010 | Pontiac Grand Prix Cars & Trucks

2 Answers

My Stihl leaf blower starts fine but wants to cut off when I pull the trigger. This problem started out of the blue and gave no prior indication that anything was wrong. I cleaned the air filter and...


first thing is to throw out that ngk plug and install a bosch wsr6f the ngk plug works fine in rev-limit engines,

on to the bogging issue, im assuming its a bg 85 or therebouts? with a zama carb, if so then depending on when it was purchased it might be a warranty due to faulty welch plugs inside the carb.

if the welch plugs have fallen out you might as well replace the carb, in my 20 years exp servicing stihl equipment i have never been able to reinstall the welch plugs with any success.

the fuel to oil ratio is 50:1 or 3.2oz of oil per gallon......dave i wish u the best of luck hope this steers you down the right path.

Nov 21, 2009 | Garden

1 Answer

Ryobi 720r weedeater. Starts, stalls, won't start.


When you rebuilt the carb did you remove and replace the welch plugs. If you did not, then that is probably where your problem is. Debris, varnish and corrosion can build up under the welch plugs and the unit will not pass fuel.

Sep 06, 2009 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

1 Answer

Welch Allyn error codes


hi
I have a error code E038 spot welch allyn
thank you
Dixon
my email dixon@coqui.net

Apr 09, 2009 | Welch Allyn Spot Vital Signs Monitor

1 Answer

Welch Allyn vital sign monitor turns off when we push the start button.


There is not enough current in the battery to start the pump. Even when plugged in these will not work properly if the battery is going bad. These are not technically user replaceable but with a screwdriver and a new battery you can take care of it. I can help more if you like. info@mesasales.com

Feb 20, 2009 | Welch Allyn Atlas Monitor W/Ecg, Nellcor...

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