Sidewinder pops out of fwd at 100km

[Gman25]

Hey guys i writing this from the bar in hopes i can get a list of parts to order before i rip sled apart.
Was riding at 100 k and no more fwd will go into reverse no issue but once selecting fwd major grinding noise!!
Do i need a new uppere gear and reverse gear? thx in advance!

 

[Big_Phil]

You really have to open it up and see what is what. You will need a new top gear and reverse gear for sure. Shift pads will likely be gone as well.

 

[Turboflash]

Chain? 16 oz. (not 12 oz like manual calls for) of a good synthetic chain lube.

 

[GodSpeedSWE]

Imo you need a minimum of these parts:

Upper gear
Oil
Orange pads for the shiftfork (likley broken)
New lockingring for outgoing shaft.

Mods can be done to prevent this.

 

[Sledroll]

Imo you need a minimum of these parts:

Upper gear
Oil
Orange pads for the shiftfork (likley broken)
New lockingring for outgoing shaft.

Mods can be done to prevent this.

Hey guys i writing this from the bar in hopes i can get a list of parts to order before i rip sled apart.
Was riding at 100 k and no more fwd will go into reverse no issue but once selecting fwd major grinding noise!!
Do i need a new uppere gear and reverse gear? thx in advance!

I had an issue last ride of the year where my SW was not going into forward from reverse and then no forward or reverse .
Cycled it on and off a couple times , and got forward working again .
I was told to ride it but don't try to put it into reverse .Was all good for that last ride , and then took it to the dealer for warranty work on chaincase but they couldn't find a problem , and it worked fine .
Just to be safe they replaced the reverse actuator and top gear under warranty , and no further problems .

 

[YukonMP]

It has been five hours, if you are still in the bar call a cab.

 

[Gman25]

Hey fellas thx i am tearing it apart this am
I will put a yamaha order in this morning should have it by wed.
Godspeedswe mentioned some mods to prevent this
What are you guys doing? i will plan on that.
Also on reasembly what method do you guys prefer for reverse actuator install? i used the service manual technique but have read different methods for this.
I was seriously thinking of a reverse delete but this things are way too heavy and i am too old and fat to be slinging sleds around!
Thanks for replies greatly appreciated

 

[GodSpeedSWE]

I put an aditional shim behind the upper sprocket to eliminate the huge axial play. A standard shim need to be skimmed down about 0.4mm to fit. Gives better engagement and 100% straight chain. Some people also change the bushing to a SKF version.

Also spotweld both bolts on the tentioner since its a common point of faliure.

 

[Gman25]

I put an aditional shim behind the upper sprocket to eliminate the huge axial play. A standard shim need to be skimmed down about 0.4mm to fit. Gives better engagement and 100% straight chain. Some people also change the bushing to a SKF version.

Also spotweld both bolts on the tentioner since its a common point of faliure.

 

[Gman25]

Ok so you now have a stock shim behind upper gear plus the shim that has 0.4 mm removed from it?
How did you remove the 0.4 mm from this shim?

 

[Turboflash]

I put an aditional shim behind the upper sprocket to eliminate the huge axial play. A standard shim need to be skimmed down about 0.4mm to fit. Gives better engagement and 100% straight chain. Some people also change the bushing to a SKF version.

Also spotweld both bolts on the tentioner since its a common point of faliure.

What are dimensions for shim you ended up using? Obviously 1" ID. What are OD and thickness?
Thanks!

 

[GodSpeedSWE]

AC 2602-339

Says 1.00x1.562x0.062 on the bag.

EDIT: The need for thickness of the shim may vary from sled to sled. We did use a magnetic grindingtable at a machine shop. Fixates the washer with magnetic force. It can be used to skim of to very tight tolerances.

 

[Gman25]

AC 2602-339

Says 1.00x1.562x0.062 on the bag.

EDIT: The need for thickness of the shim may vary from sled to sled. We did use a magnetic grindingtable at a machine shop. Fixates the washer with magnetic force. It can be used to skim of to very tight tolerances.

 

[Gman25]

Ok so you had stock shim plus the one you modified?
How much float or freeplay was on top gear when you finished? Any or was it pretty tolight between c-clips?
Thx again

 

[GodSpeedSWE]

Ok so you had stock shim plus the one you modified?
How much float or freeplay was on top gear when you finished? Any or was it pretty tolight between c-clips?
Thx again

Correct, 1+1 the inside, 1 on the outside.

Made mine a bit to tight, could not feel any play but the locking ring did turn free and easy. So I guess it was pretty spot on and I did skim 0.3. If i did it again I would like 0.1 in play.