Briggs & Stratton

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If you are refering to the spark plug gap, if you purchase the proper plug it comes pre gapped for you. I use to check and they were good, now unless i have reason to suspect I just eye ball it in comparison to the old one.

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A: This spark plug should have a gap set to 0.02 inches.
Check the gap with a spark plug gauge. It should be 0.03 inches (0.76 millimeters).
The gap setting is different for each vehicle but most are somewhere between 0.028″ and . 060″. Consult the owner`s manual or Champion ® catalog to find the recommended setting for the vehicle you`re working on.
As long as it is not less than 0.30mm, it will be OK. If the gap is too great, the engine may not start as easily. If the gap is too small (< 0.30mm), there is the risk that the coil and flywheel might touch as the flywheel heats up and expands when the engine is run.
Today`s spark plugs come pre-gapped, but it`s a good idea to double check this before installation. Use a gap tool and make sure the gap matches the specs for your machine.
A) For 28-32 cc engines, set the gap at 0.020″ (0.5 mm). B) For 38-55 cc engines, set the gap at 0.025″ (0.635 mm). IMPORTANT!: Always refer to the appropriate product Operator`s Manual for exact specifications and additional model specific service information when replacing spark plugs.
Champion RC12YC Spark Plug, 0.032 to 0.038 in Fill Gap, 0.551 in Thread, 5/8 in Hex, Copper, For: 4-Cycle Engines.
It is very important to maintain the contact breaker points gap at the size recommended by the manufacturer. The recommended size usually covers a small range. Most common sizes are in the range 0.012″-0.015″ but ML used 0.010″ on their Maglitas and Eisemann specified 0.020″ for their AM magnetos.
STEVE: When the point gap is lessened, the timing is advanced. Point gap varies with different engines. Changing the point gap is similar to rotating the distributor. The gap on the spark plugs needs to be within specs, as that can also change engine timing.
A) For 28-32 cc engines, set the gap at 0.020″ (0.5 mm). B) For 38-55 cc engines, set the gap at 0.025″ (0.635 mm). IMPORTANT!: Always refer to the appropriate product Operator`s Manual for exact specifications and additional model specific service information when replacing spark plugs.
One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes. If the gap is too small, the spark will likely be too weak and cause the engine to run poorly or with poor efficiency.
EITHER RC12YC or RC14YC will work. But for best results use NGK BKR5E or BKR6E. They last longer and are less prone to fouling. Helpful?
One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes. If the gap is too small, the spark will likely be too weak and cause the engine to run poorly or with poor efficiency.
EITHER RC12YC or RC14YC will work. But for best results use NGK BKR5E or BKR6E. They last longer and are less prone to fouling. Helpful?

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

How do I remove and clean air filter? – Briggs & Stratton Lawn-Boy 10640 20-Inch 6.5 HP Gas Powered Lawn Mower
ANSWER : There should be a square of plastic on the side of the engine which is opposite of the muffler. It has a small hex head with a slot cut in it. Remove this plastic cover and the air cleaner should be inside of it.

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What Gap for spark plug on 3.5 hp engine? – Briggs & Stratton Briggs Stratton Lawnmower Lawn Mower Short Block
ANSWER : .030 or 76 MM

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How many cycles is a 6.25 hp Briggs & Stratton engine ?
ANSWER : 4 cycle.

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Wshat is the valve clearence for a 24 hp briggs and stratton engine model 446677 type 0470E1 code 050405yh
ANSWER : About a mm or .004″.

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I see no vent holes om my 675 series briggs and stratton engine fuel cap
ANSWER : There are holes in it should be three or four. a rubber diaphram is covering it but they are there

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Riding mower keeps back firing and will not start
ANSWER : You have a sheared timing key it is under thefly wheel replace says the red neck

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Have a 10.5 briggs that is pushing gas and oil out the blow by pipe.what can i do
ANSWER : The oil level is to high or air filter pluged.

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17 HP Briggs & Str lawn mower engine that is smoking a lot –
ANSWER : Compression test it can either rent or buy one should be over 90psi!!!

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