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MCB Performance FAQ
If for any reason you are not happy with your purchase after receiving your item, you may return the item(s) within 7 days of receiving your order or a refund of your costs as long as the merchandise is in fully resalable condition (no damage, no stains, no wear and tear)
All returns must have its original packaging with freight prepaid and insured. All returns will be assessed the industry standard 15 % restocking fee. Returns must be made within 15 days of "Return Authorization" date.
Any returns must be noted with a full description on the front of the manifest or bill of lading in order to be recognized as valid. Prior to any returns, customer must contact MCB Performance at 810-395-7162.
"In-Stock" items usually process in 24-48 hrs and shipping times vary based on your choice of service and location.
Occasionally, items shown to be in stock or available get pre-sold, in this case, you will be sent a email notification that your item is on backorder. You have the option to continue to wait for that item, cancel your order for a full refund, or select a different item to order.
If you are ordering an Item that has a core required BEFORE shipping the order you may be notified of this need first.
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DUE TO THE INHERENT USE OF HIGH-PERFORMANCE PRODUCTS, MCB PRODUCTS AND EACH PART THEREOF, ARE SOLD “AS IS” AND WITH ALL FAULTS, TO THE FULLEST EXTENT ALLOWED BY LAW, MCB MAKES NO WRITTEN, ORAL, EXPRESSED, OR IMPLIED STATEMENT OF WARRANTY OR GUARANTEE ON ANY PRODUCT OR PART SOLD. MCB WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES, INCLUDING, BUT NOT LIMITED TO DAMAGE, INJURY, LOSS OF LIFE, LOSS OF PROPERTY OR EQUIPMENT, LOSS OF PROFITS OR REVENUE, OR CLAIMS FROM ANY INDIVIDUAL OR ENTITY ARISING FROM THE USE OF ANY MCB PRODUCT.
Proper break in of a 2-Stroke Engine. This a VERY common question and can be summed up with one sentence: Increased Load over Decreasing Time. What that implies is the engine needs LOAD for proper marrying & seating of components and the load should be increased over a reduced schedule.
How this would normally work:
1 - ALWAYS start with 100% NEW fuel and a PROPERLY LEAK TESTED engine per factory guidelines. Carb(s) / Injectors MUST be clean, filters replaced and hopefully if there was a failure you have isolated and corrected the root cause before simply replacing parts.
2 - Heat cycle #1 - Start the engine and bring it to just UNDER operating temp and then let it cool COMPLETELY (i.e. overnight) Ensure it is oiling! Revving the engine BRIEFLY and not over 1/3 throttle once or twice is fine.
3 - Heat cycle #2 - Check for leaks. Pull spark plugs and verify relatively dry cylinders. Start engine and bring to full operating temp and note cooling system burping and top off as needed. Let engine cool COMPLETELY again.
4 - First ride should be SHORT (15-20 min). This is where you will be putting the first load to the engine by applying short / brief bursts of throttle up to 1/2 throttle and slowly rolling into and off the throttle varying the LOAD. Again let cool completely and check bores/plugs , cooling system, and ensure oiling. After this you may ride as much as you wish but NO LONG WOT for the first tank and varying throttle and loads for the next tank full.
Snowmobile specific info:
1 - With most later Ski Doo Etec's you MUST have the ECU put in break-in mode (anyone with a professional BUDS interface can do this). DO NOT add premix to any Direct Injection (ETEC) engine.
2 - Carbureted engines CAN use premix during break-in however no more than 100-1 and the oil MUST be premix-compatible.
3 - Any cable actuated oil pump (Earlier Cat, Polaris, Skidoo, etc) you may find it beneficial to shorten that cable adjustment to allow more initial oiling just remember that it does NOTHING additional at WOT. On the Polaris 800's this adjustment can be left for the life of the engine as Polaris ran these engine VERY oil-lean.
4 - Its ALWAYS a good idea to measure/monitor and CALCULATE YOUR OIL RATIO being used! Fill both tanks then after usage measure the top off amount of each (gallons to ounces) and calculate. This will give you piece of mind that all components are operating properly