Did some more work yesterday:
- Installed a new secondary spring cup to replace the gouged one I had (no pictures of this).
- Installed some different primary weights, just slightly lighter than stock at 21 grams, the 17.5 grams were a little too light and my MPG went down by 3. We'll see how these do.
Please remember my goal is better-than-stock low end, good gas mileage for cruising, and maximum highway speed, so my goals may not match everyone else's, especially you
mudders. (no pictures of this).
- Insulated the driver side radiator hose. After extended riding, heat soak from the radiator could eventually be noticed. Keep in mind that I've blocked off the upper front wheel wells so air doesn't come in through those areas. Well I no longer get as much dust or cold air from the steering wheel or other crannies, but as a result, there's no air flow through the front cab and I suspect the tunnel area
- I don't know why the X4 got the shaft on the muffler cover since it came out before the X2, but I liked the look of it and retrofitted mine. I only bought the cover and 4 screw covers and used my own bolts and covered it with Thermotec heat/sound wrap. The cover is only $20 bucks and is part B8K-F194H-00-00 The plastic caps are part #2MB-F143A-00-00 and you'll need 4.
- Changed out my air filter. I bought a new one so I can clean the old one at my leisure. Paper filter underneath the foam still looked good so I reused it.
I put some aluminum heat tape on the top and front of the CVT air box since the radiator hose that transports the hottest coolant runs right on top of it. Figured it would help the CVT airbox stay a little cooler. I also installed my CVT drain plug mod, which is simply installing a 3/8" barb elbow which I'll attach a clear vinyl hose to and route it the rear wheel well where it will be more convenient to drain if need be.
To cut down on the heat emitted from the radiator hose I cut a piece of pool noodle to cover the metal pipe and then used hot water line insulation for the rest of the coolant line.
I was able to eliminate the zip ties since the insulation keeps everything in place. The insulation will not only reduce heat soak but it also keeps the radiator hose from touching the CVT box or the plastic panels. That other hose coming out of the CVT near the top of the primary is my CVT blow-out port.
X2 muffler cover.
Covered with Thermotec.
I supposed I could have just painted/powder coated it but it was more labor-intensive than just installing the plastic cover. Here's how it looks stock.
After a few runs on the trails it should be as dusty as the rear tailgate. I think it looks much better myself.
You would think after almost a year and with having my airbox lid swiss cheesed my original air filter would be filthy right? Wrong.
Yes that's the stock air filter element after almost one year and 3500 miles. Looks nearly brand new. I think having the airbox up high keeps most of the nasty stuff out. There weren't even any bugs, leaves, or other debris in the airbox.
The tabs for the air filter frame aren't obvious so here's a shot of the left one engaged and the right one popped out. No need to worry if they break because the main air filter box lid keeps pressure on that cap.
You can see those tabs easier with the cap removed
The oil Yamaha uses on their filters is VERY tacky. If you bought a new filter to swap out between cleanings, it's already oiled. Open the bag but don't take the filter out. Use the bag to work the filter over the air filter frame.
Slide the bag up as you work the air filter down.
Make sure you work the bottom of the filter into the lip retainer and you'll have a lip at the top as well.
Finally, reinstall the air filter cap.
