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I also noticed the engines is 'snatching back" a little makes we wonder about an aftermarket stator or a stator issue. Starting issue like that is definitely not typical on the 998

Wow Great looking sled...hopefully sells quick and to an appreciative new owner...all the best.

Other then an aftermarket stator you will have to stick with Yamaha OEM for your specific year.

IMO...most important thing is to always use a premium synthetic oil on the 998s and change it regularly...0W30 or 5W30....cheep oil leads to big problem$ Recently most car manufactures have been dealing with major engine failure issues...common recommended oil 0W20...ultra high mileage...

Oil Pressure switch for a 2010 Subaru Impreza....

That"s the oil I have using in my SW for many seasons now.

I have had the original design Hurricane noise reduction shaft for many years and clutch is still quiet with very little roller wear.

Sounds like a wiring harness issue. The Apexs were notorious for ground block issues so I would start there. I have heard the wiring harness that runs along the frame just above the clutches can also be a problem area.

Check the voltage right at the battery terminals when the sled is not running and ignition is on then start the sled and check the voltage again right at the battery. Engine off it should read just over 12 volts Engine on it should typically read over 13 If the voltage reading is higher when the...

I know they have changed the VR on the newer model Yamacats I suspect to help deal with greater electrical loads of EPS ect. Does anyone know the amperage of the original VRs and the updated VR amperage? I run a Earth X battery and a lithium ion battery VR from RM Stator that is 50 amps.

At 21,000 km I would think it is definately a consideration to replace the helix, pins , and rollers. On the secondary clutch I have had good luck with the OEM rollers.

I thought about doing that as well...did you build new brackets? An inch would have been all my sled needed to avoid stud contact.

That is the same track I put on my Attak a few years back...works great except the small studs were hitting the rear optional add on heat exchanger on real bumpy trails. I ended up pulling all the studs out to stop any further damage.

What track did you install on your Attak?

I agree with Knapp as well. But....If you are not the original owner of the sled then it is possible someone may have swapped tracks from a 146" 2.86" pitch driver track to a 144" which is a 2.52" pitch track? Unlikely but anything is possible. a quick measurement of the distance between the...

IMO...the 144" Apexs were just too big....too heavy...and never rode or handled real well. I have a 136" but I would stick to the 128" for sure for my wife.

We have good snow here but this cold snap of -35c/-31f cools my desire to ride.

I too would opt for a 2011+ 128" model...less maintenance issues, especially exhaust, and power steering.

Yamaha did some upgrades from model year to year gradually on the Apex from the 2006 model and frequently on the chaincase cover ect. The 2010 Apex was a relatively rare beast and was the last year prior to the major changes and upgrades like power steering and exhaust EXUP valve and one little...

I have looked at the BOP MPS as well but I have not pulled the trigger as I am concerned with loss of turning radius. I installed an easy steer kit on my 1996 Vmax 4 back in the day and was very disappointed in the turning radius reduction to the point of removing it....although the Vmax 4 never...