Yamaha Raptor 90 Full System 09-14 Installation Instructions

Removal

1. Make sure the machine is on level ground and completely cooled down.

2. Loosen the stock Clamp that holds the Silencer and Head Pipe together.

3. Loosen the Silencer Mounting Bolts.

4. Brace the back of the Silencer with one hand and take the Bolts the rest of the way out.

5. Pull back and twist until the Silencer is removed.

6. Loosen the Bolts from the Exhaust Port.  Once loosened, support the pipe with one hand and remove.

Installation

1. Position the HMF Head Pipe in place of the original.

2. Slide the T-Bolt Clamp over the end of the HMF Silencer.  Then, slide the Silencer onto the Head Pipe.  Some pushing and twisting may be necessary.

3. Mount the Silencer with the Stock Bolts or the supplied hardware and tighten.

4. Tighten the T-Bolt Clamp to secure the Silencer to the Head Pipe.(See Figure #1)

5. With most applications, re-jetting/remapping is a necessity.