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I have a B&S model 40777 mower with low

I have a B&S model 40777 mower motor with low compression in 1 piston. Do I need to split the block to replace the ring?

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Yes you need to take the sump off but make sure the valves aren't leaking first of the head gasket may also be leaking and causing the same problem.

Posted on Aug 09, 2009

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How do I remove the horizontal shaft


the motor you are working on has a split block and you have to take the motor off and remove the bolts holding the two halves of the block apart. this motor doesn't have a separate removable head. it is cast as two pieces and in my opinion makes more work for some repairs. hope this helps

Oct 13, 2015 | Briggs AND Stratton Intek Briggs &...

1 Answer

I have a 92 Integra with a b18a1. And it's stock but it's rebuilt. My question is it possible that they put low compression pistons in the stock block? All compression is at 75


It is possible but unless you have wild cams and the test was done at the top of mount everest I doubt it. In a stock motor 75 psi would be less than 6:1 compression ratio. Was the testing done at wide open throttle.

Apr 20, 2015 | Cars & Trucks

2 Answers

How to fix my ford ganger 2001 v6 3 o l I have low comprecion cylinder number 2


Well, there are a few causes for low compression....bent valve, broken rings, worn cylinder, broken/ chipped valve, blown head gasket, cracked head, cracked block/ cylinder, broken/ cracked piston......as you can tell, none of which are good and always means going into the engine to repair. A lot of times it is quicker, cheaper, and easier to exchange the engine for either a remanufactured or good salvage yard engine.

Sep 26, 2014 | Cars & Trucks

2 Answers

1998 neon hard start runs rough low vaccum


Low Vacuum --measured where & how?

Low intake manifold vacuum ?

Do a Cylinder Leak Down Test--pretty much indicates
the motor is worn out ,or you have a valve issues

Check the timing belt & look at MAF , Fuel Trim & O2 Data

Do a cylinder balance or cylinder contribution test before
the leak down

Jul 28, 2014 | 1998 Dodge Neon

1 Answer

I have a Briggs & stration 40777-268E1 While its is runing it will die down then pick up again. when it does this it puts out alot of black smoke.


It is hunting. This occurs due to the carburetor being dirty and a hole is at lease partially blocked. You will have to remove the carburetor and thoroughly clean it. Take a picture of the linkages so that there is no doubt as to where they go when reinstalling the carburetor.

I hope this helps.

Aug 18, 2011 | Garden

1 Answer

My Craftsman 7&1/4 inch 12 amp Circular Saw(Model 315.108330) slips while cutting. The motor keeps spinning but the saw stops rotating. Can I Fix it?


Most circular 7-1/4 saws have a bolt and a compression washer that acts as a brake shoe that holds the blade secure but under dire circumstances will allow the blade to slip some rather than hold the motor shaft and allow burn out. The compression washer under your bolt has become worn and doesn't grip the blade securely. You can find a split washer that will fit under the blade and give you some more friction, or go to sears and order another compression washer for your saw.In the Sears Parts List found at: http://www.searspartsdirect.com/partsdirect/part-model/Craftsman-Parts/Saw-Parts/Model-32018780/0247/0744410/50035950/00001?blt=06&prst=&shdMod=

see part no. 44

Feb 23, 2011 | Craftsman Evolv 12 Amp 7-in Circular Saw -...

2 Answers

The starter turns the motor over very slowly, but motor will not start.


If the engine is turning over too slow, the engine will not start. Try either charging the battery first or attach a charger while starting. If it is still turning slow, the starter may be drawing too many amps and need to be replaced.

Feb 15, 2011 | Parks Optical 13.5hp Briggs And Stratton...

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2000 NEON NOT FIRING ON THE #1 CILENDER


#1 cylinder not firing, check spark plug, spark plug wire, remove spark plug and use a compression tester, and check the compression of that cylinder. should have at least 65 pounds of compression per cylinder. If the compression is low, you may try shooting a little oil in to that cylinder, replace spark plug, and try running motor again. if the compression is low on said cylinder, could be due to bad piston rings. requiring a motor rebuild.

Nov 08, 2010 | 2000 Dodge Neon

1 Answer

Push mower won't start. Oil coming out of muffler


Your motor is pooched. Oil is not supposed to come out the exhaust. It indicates a worn out motor or something broken inside like a piston or compression rings. Or possibly someone has put half a gallon of oil in it instead of half a quart and it's well overfilled?

Aug 31, 2009 | Garden

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