Full System Exhaust Instructions

Removal

!!! WARNING !!! Before working on your machine, make sure it is parked on a level surface with the transmission in park and/or the parking brake engaged.
Do not work on any machine with a hot engine or exhaust.  Allow time for all parts to cool to reduce the risk of burns.
Blackout Exhausts: Take care not to get grease or oils on the exhaust.  Cleaning our Blackout exhaust with harsh solvents, abrasives, or pressure washers will remove the coating and is not covered under warranty.

1. Remove the (2) nuts securing the headpipe to the cylinder head.  Save these nuts, they will be reused to install the HMF exhaust.

2. Remove the support bolt in front of the silencer.

3. While bracing the silencer remove the bolt securing it to the frame, then carefully maneuver and remove the stock exhaust from the machine.

4. Inspect the gasket in the exhaust port (it may also stick to the headpipe).  If worn, damaged, or crushed replace with a new, stock gasket.

Installation

1. Ensure the sealing gasket is placed in the exhaust port of the cylinder head.

2. Position the HMF headpipe, and loosely secure it to the cylinder head using the original (2) nuts.  Do not tighten.(See Figure #1)

3. Slide the silencer over the headpipe and secure it to the original mounting position using the provided (1) M8-1.25x20 Hex Bolt, (2) 3/8” Flat Washers, and (1) M8-1.25 Nylock Nut.

4. Install the provided (1) Long Spring between the headpipe and silencer.

5. Check for proper clearance and alignment of the exhaust system, adjust as needed, then tighten the silencer mounting bolt followed by the (2) nuts holding the headpipe to the cylinder head.

Notes:
- Wipe off any fingerprints or markings using a soft cloth and mild detergent such as soap and water or glass cleaner without ammonia.  Once the exhaust heat cycles any oils left on the exhaust may permanently imprint.
- If you received a stainless steel exhaust without the Blackout coating it is normal for the pipes to change color as they heat cycle.
- The HMF Blackout exhaust will smoke and put out an odor for the first full heat cycle as the coating goes through its final curing process.  It is recommended to allow this process to happen in a well ventilated area.
- All systems will produce a smoke out the end cap after a short initial heat cycle, this is the packing material bedding in and is completely normal.
- Until the exhaust has been heat cycled a few times small exhaust leaks may be noted at any of the connection points or from the rivets on the silencer.  This is normal and usually goes away after a few hours of run time.(See Figure #2)