0%

 

Component / Tool list:

  • Billet Head Cover
  • Domes
  • Base Gasket
  • O-ring Cylinder Gaskets

 

IMPORTANT - Read the entire instructions before proceeding. If any of it does not make sense or is not in your skillset, please have an experienced technician perform the install.

 

  1. Drain the coolant by removing one of the lower coolant hoses from the motor. Be sure to use a few drain pans under the sled to catch the pilling coolant. A Mity-Vac style suction drain works great to remove coolant without spilling.

  2. Remove the rear coolant hose and the smaller coolant hose near the oil tank. Remove the spark plug wires and remove the spark plugs from the head. Unplug the coolant temp sensor out of the center of the factory head. Remove temp sensor.

  3. Loosen the bolt to the knock sensor and remove it from the head as well.

  4. You can now start loosening and removing the head bolts. Remove head from the engine.

  5. You reuse the base gasket and O-ring cylinder gaskets or purchase new ones from your local dealer if you choose to do so. If your sled has ever overheated, it is best to replace the gaskets then.

  6. Install the O-rings in your kit over the spark plug openings of the domes. Install the domes into the billet headcover. The direction of the domes does not matter. You are now ready to install the BMP Billet head on the engine.

  7. Lightly grease the factory O-rings in the grove of the cylinders. Place the BMP headcover on the engine. A trick is to put a set of spark plugs into the domes as it makes it easier to set the head on without the domes falling out. Make sure the O-rings are still in place and did not move or get pinched.  You can use a tiny bit of “The right stuff” grey sealer on the bottom of each head bolt. Install and hand tighten bolts. Using a calibrated torque wrench, torque the head bolts in cress–cross pattern to 25ft-lbs.

  8. Reconnect the coolant hose in the rear of the head and the smaller hose on the right side of the head near the oil tank. Screw-in and tighten the coolant temp sensor as well as the knock sensor and torque that to 168in-lbs. Tighten new BPR9ES spark plugs into the head domes 18-22ft-lbs.

Disclaimer

As defined by the Magnuson-Moss Warranty Act. Do not install any performance parts or services unless you have the technical ability to properly set up the entire machine to compensate for the installation of those parts. References in most of our literature to “bolt-on-parts” only indicate the parts are removable from the machine. It is not meant to imply that the parts can be installed without additional modifications. The necessary work and expertise needed to install different product varies. Instructions, where provided, are given to assist in installation only; they are not a substitute for mechanical experience in setting up racing vehicles. References to performance gains, reliability, ease of installation, etc. are bases on our and outside customer’s experiences. This is not a guarantee of similar performance in every installation. While we sell proven products, in the end, it’s up to the individual to make the most of the product. Bikeman Performance Plus is not responsible for any personal or property damages caused by this product.

Tags: polaris patriot 850 install head kit engine