***check your primary to bearing retainer bolts ***

[**sj**]

cat had this problem and I assumed we have a different clutch so we wouldnt...but following the 108/43 ft lbs torquing procedure some have hit the crank bearing retainer bolt heads!

I will be checking mine tonight and removing the bolts looking for a button head bolt ...something with less protrusion for sure...


just wanted to give a heads up..

 

[rlbock]

Yamaha has mounted their clutch on this motor long enough to not have some clearance problem


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[rlbock]

cat had this problem and I assumed we have a different clutch so we wouldnt...but following the 108/43 ft lbs torquing procedure some have hit the crank bearing retainer bolt heads!

I will be checking mine tonight and removing the bolts looking for a button head bolt ...something with less protrusion for sure...


just wanted to give a heads up..

Are you talking about the 4 bolts that hold the bearing housing that holds the output shaft on to the splined crank?


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[jonlafon1]

I thought this was a new motor?
The torque specs sure are not the same as past

 

[**sj**]

I thought this was a new motor?
The torque specs sure are not the same as past

exactly...if the taper is the same...why is the torquing different?

 

[Shagnos]

It is a different primary.

 

[SEVS11]

Yep, I can confirm that I've seen 2 that have chew marks behind the primary from contacting the retainer bolts and the clutch sheave is now junk IMO. One also spun on the shaft and has discolored the snub a little (hence the reason for the re torque from yam). I checked mine after updated re torque with a mirror and boy it's within a hair at most before contacting. I did 50 miles or so and no contact so check yours boys and girls and let us know your findings. Cheers

 

[DMCTurbo]

Yep, I can confirm that I've seen 2 that have chew marks behind the primary from contacting the retainer bolts and the clutch sheave is now junk IMO. One also spun on the shaft and has discolored the snub a little (hence the reason for the re torque from yam). I checked mine after updated re torque with a mirror and boy it's within a hair at most before contacting. I did 50 miles or so and no contact so check yours boys and girls and let us know your findings. Cheers

I seen one last night that was hitting the bolts as well...

 

[SEVS11]

Well.....this is not good boys. I hope that they report the concern so we can all get a fix for this.

 

[snowbeast]

Yep, I can confirm that I've seen 2 that have chew marks behind the primary from contacting the retainer bolts and the clutch sheave is now junk IMO. One also spun on the shaft and has discolored the snub a little (hence the reason for the re torque from yam). I checked mine after updated re torque with a mirror and boy it's within a hair at most before contacting. I did 50 miles or so and no contact so check yours boys and girls and let us know your findings. Cheers

Can any one who knows what it is and looks like,please post a good pic with arrows so someone who does not understand what is happening,may!

 

[done dooin'_winder up]

Can any one who knows what it is and looks like,please post a good pic with arrows so someone who does not understand what is happening,may!

look behind primary with a mechanics mirror and flashlight. you will see the bolts. about 1/8' clearance.

 

[ROCKERDAN]

Checked it today.....It has near 1/8" clearance here.

Very odd that this has so much space, and some are hitting here? Wow.

Just use a mirror and light...under the drive clutch reflecting the mirror upward behind primary to see.

 

[Jafo1970]

Mines about 1/8" gap and torqued correctly.