FREE SHIPPING NEE0124K- Onan 'B', BM Series Master Tune Up/Decarbon/Valve Adj WITH Oil Filter.  The Onan B43, B48, B43M, B48M, engine is commonly found in Case Ingersoll Models 226, 446, 448, 648  (Note: some extremely late model years of these tractors do NOT have points and those models would use an Onan P series Performer kit)

These engines were used in many different brands of equipment as well like John Deere, Wheel Horse, Cub Cadet, Toro, Miller, etc. 

IF YOU HAVE A  ONAN B "BG" SERIES ENGINE LIKE A B43G OR B48G SO WE HAVE A DIFFERENT LISTING    Look for our listings for  B43G OR B48G

CHOOSE- AIR CLEANER SIZE 8 inch OR 6 inch wide outside. 

CHOOSE- Carburetor You Have DD13, Nikki Early, Nikki Late LOOK at Photos. 

It is recommended and extremely important that all Onan engines get decarboned at every 250-500 hours.  Depending on engine use, oil consumption, operating engine temperature, carburetor adjustments and spark plugs, if you did not  have good hot complete combustion, burning lots of oil, or rich running condition your carbon buildup can happen much faster. Not de-carboning or adjusting valves can lead to catastrophic engine failure, lower performance, and lower fuel economy.

Onan 'B' Series Master Tune Up/Decarbon/Valve Adjustment, Ignition and Filter Kit,

Included in this KIT, high-capacity fuel filter, 2 top-quality NGK spark plugs, a high-capacity OEM Onan/Cummins/Fleetguard oil filter, high-quality air filter,  high-quality USA made to our specs, 2 intake gaskets, 3 valve cover gaskets, Carb to intake gasket, air filter housing to carb gasket, points gasket, 2 very high-quality aftermarket head gaskets. High-quality aftermarket set of points and condenser (we have tried many aftermarket points manufactures and options, and these by far we have seen the best results with and are far more economical than the expensive OEM option.  If in the budget, we recommend OEM points. Current OEM points are NO longer the superior quality "Repco" points but they are good quality, OEM points and the option is available at check out to upgrade to them.

(WE do have a small supply of REPCO points for sale listed separately, note they are no cheap and very, very hard to find but we are offer a limited amount to those who want them)

  A Carburetor gasket for the halves is include so you can clean your carb too. These years machines with "DD Style" carbs should have the DD13 from factory, but someone could have swapped a DD11 make Note if You have a DD11. DD carbs have 6 inch Air Filter.  OR if your tractor is a late model 226/4446/448 If you have a Nikki Style carb choose "early" or "late" for gasket (look at photos) Nikki use the large 8" air filter choose at check out. Look at photos.

Do not forget the gasket maker sealer HERE

SELECT BEFORE ADDING TO CART Carb Style & Air Filter Size

OPTION- Add Spark Plug Wires

OPTION- Switch to OEM Head Gaskets, Points & Condenser. 

OPTION- Add the grommet for the oil filter. It is a needed piece to keep your engine properly cooled and avoid catastrophic engine damage. It is an oil filter to tin/heat shield grommet. If you do not have one or yours is damaged it is a MUST HAVE item on your Onan.

 Accel spark plug wires have been replaced we have found a great replacement.

This kit includes what you need to do your routine seasonal maintenance, tune-ups, and major tune-up/decarbon/valve adjustments.  This is what we use in our shop.  The high-capacity oil filter helps with keeping cooler engine oil temperature, filtration, and oil contamination dilution, any time you can get more oil capacity in a small engine it is a great benefit. The spark plug heat range we select here for our kit we have found works best with today's gasoline.  The OEM oil filter brand is the number-one filter company in the world.  This kit is what you need to make your Onan "B" series run like new and stay that way.

NOTE: THERE IS AN OPTION ON AIR FILTERS TO BE DECIDED AT CHECKOUT.  Depending on the year of your machine there were different air filters used. ALL DD Carbs. (Measurements for this smaller filter are: 3 inches high; 4 5/8 inch ID; 6 inch OD)  

If you have a  Nikki carburetor on your 226, 446, 448 you will need the larger OD air filter. (Measurements for this larger air filter: 2 1/8 inches high; 6 5/8 inch ID; 8 inches OD) Most Onan-powered Case Ingersoll tractors with the plastic dashboard use the larger OD filter but to be 100% sure you are selecting the correct filter, measure the filter on your tractor before ordering.

Be sure to watch our videos on how to adjust values and decarbon Onan engines.

Video Links:

How to De-carbon & Replace Head Gaskets On A Onan or Many Small Engines. DO BEFORE ADJUSTING VALVES

How to Adjust the valves on a ONAN Small Engine

SHOP TIP: We recommend always running high octane, premium gas in ALL small engines and Case Ingersoll machines, and even better if you can get ethanol free.  We have found a noticeable difference  in performance and reliability/issues

SPARK PLUG GAP .025 - .030

Valve Adjustment Clearances:  .005-.008 on intake;  .012-.014 on exhaust are the clearances we use

POINT GAP:   .021 for BF, BM Series. BUT WE HIGHLY RECOMMEND timing the engine and setting the points with either a test light or using the timing gun method and your manual for your model.  CLICK here to get to our video on this.

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WEBSITE FOR MORE INFO ABOUT US AT caseingersolltractors . com ,  Follow us on Face Book at Case Ingersoll Garden Tractors Northeast.

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THANK YOU FOR YOUR SUPPORT OF SMALL USA BUSINESSES. REACH OUT FOR ANY QUESTIONS.


                             GENERAL DISCLAIMER/TERMS/CONDITIONS FOR NEW AND USED ITEMS

SHIPPING AND PICK UP POLICY. Almost all times we have multiple kits made up and on the shelf and ship them out within 1 business day. But we also offer for sale the kits locally at our shop and on our web site to our customers as well as we install them for customers, so we try to keep the inventory for online sales as accurate as we can. But sometimes there is an  overlap. So if the rare time a overlap happens we have to make/put the new kits together and then ship them out. Most times this takes UP TO 2 to 4 business days. We just wanted to be upfront about that. You can message us to check current inventory.


PLEASE CHECK ALL PART AND MODEL NUMBERS, INFO AND PHOTOS BEFORE BUYING AND FEEL FREE TO ASK QUESTIONS. It is up to you to make sure this fits YOUR tractor before purchasing, THANK YOU. LOOK OVER PHOTOS. What is pictured and the main item in picture (not background) is what you get, Ask If I can help you in any way.

                              


         I OR WE THE SELLER accept no responsibility or liability for the use of, misuses, abuse, resale of any item purchased. I THE SELLER shall not be responsible for failure of equipment nor complications arising from failure caused or not cause by item sold. Nor any damage or injuries caused associated with the BUYER.

       Once the product/products/ leave our possession I THE SELLER accepts zero, no responsibility or liability for the use of, misuses, abuse, resale of any item purchased. I THE SELLER shall not be responsible for failure or use of equipment nor complications arising from failure caused or not cause by items sold. Nor am held liable for any damage or injuries caused by items sold or items correctly or incorrectly installed and or used by anyone including BUYER and or installer or those associated with the BUYER or installers. BUYER accepts all this with the purchase as well as ALL AND ANY responsibility and liability as soon as they take possession of item in person or via shipment. It is solely the purchaser’s responsibility to choose qualified trained professionals for correct and safe product installation and


All items/products/goods are purchased by the BUYER are "AS IS" condition, and I THE SELLER make no representation or warranty, expressed, or implied. BUYER accepts all this with purchase as well as ALL AND ANY responsibility and liability as soon as they take possession of item. It is your duty to make sure the item will work for your needs and or fit BEFORE YOU PURCHASE.

So please feel free to ask questions if you need to and we will help to the best we can and THANK YOU. If you have any issues please reach out and contact us.

We have lots of Case Ingersoll parts and items, so let me know what you may need and If we have it we can make a listing so it can be purchased. Thank You