Chaincase Lube Level

Blue Dave

Blue Dave

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'17 Sidewinder LTX DX
I have always wondered why the reverse equipped sleds have a lower mark on the chaincase lube dipstick than the non reverese model. The manual states that the capacity of the chaincase is 8.5 oz without indicating any distiction between the models.

If they both use the same quantity of lube why would the reverse model have a lower mark on the dipstick? It would seem to me that if anything it would actually be higher because the reverse mechanism displaces additional volume in the chaincase which would result in a higher lube level if the same quantity of lube is added.

Anyone care to offer an explanation or theory?
 
I believe it's because the reverse gear is larger. The chaincase covers are also different displacement. Different parts but they share the dipstick.
 
ecopter said:
Chaincase on reverse models is wider?
Click to expand...

That would certainly make sense. If the reverse model uses a larger (deeper) cover that would increase the chaincase displacement. Can anyone confirm this?
 
My dealer told me a few years back that they all get filled to the standard side of the dipstick if you have reverse or not. Supposedly they fill them all like this that come in for service. I have been doing it with mine for years and have had no problems. Mike
 
Blue Dave said:
I have always wondered why the reverse equipped sleds have a lower mark on the chaincase lube dipstick than the non reverese model. The manual states that the capacity of the chaincase is 8.5 oz without indicating any distiction between the models.

If they both use the same quantity of lube why would the reverse model have a lower mark on the dipstick? It would seem to me that if anything it would actually be higher because the reverse mechanism displaces additional volume in the chaincase which would result in a higher lube level if the same quantity of lube is added.

Anyone care to offer an explanation or theory?
Click to expand...

I have wondered this about a few other Yamaha situations, namely the oil/filter capacity when changing them.
Oil only is obviously different than a filter too but the capacities don't match what's written in the book or what the "Exact Total" really is?

I have added 8oz's to mine since I purchased it and haven't had a issue.
(Just going by the info I have read here)
 
I was told by the dealer to put in no more than 250mL back in 06 when I bought my sled. It was due to the fact that they had chaincase seal failures due pressure building up in the chaincase when running high speed. Alot of guys wrecked their chaincases.
 
Mikedom said:
My dealer told me a few years back that they all get filled to the standard side of the dipstick if you have reverse or not. Supposedly they fill them all like this that come in for service. I have been doing it with mine for years and have had no problems. Mike
Click to expand...

That makes sense because when I put 8.5 oz of lube in mine the level is at the std mark on the dipstick.
 
Yea...I went threw all this too, I have 07 apex rtx-er (has reverse) and on all sleds located on the clutch cover (guard) it specs 8.50 oz in chaincase for fill. That takes it to the "standard" mark on my dipstick. I was told all sleds get 8.50 oz. No problems to date and have had my chaincase open and looks new.
 
Blue Dave said:
Mikedom said:
My dealer told me a few years back that they all get filled to the standard side of the dipstick if you have reverse or not. Supposedly they fill them all like this that come in for service. I have been doing it with mine for years and have had no problems. Mike
Click to expand...

That makes sense because when I put 8.5 oz of lube in mine the level is at the std mark on the dipstick.
Click to expand...

That's what I figured out a few years back after talking to the dealer. I put 8.5 oz in and it was up to the standard mark. I have been doing it ever since. ;)!
 
I just changed the chaincase gear lube on my buddy's Viper with reverse and also on his Viper without reverse and it was the same situation with the recommended amount of lube filling the chaincase to the std mark on both sled's dipsticks.

Apparently the additional interior volume created by the larger reverse chaincase cover must be exactly offset by the additional volume that is displaced by the reverse components resulting in the same actual available interior volume.

I am sort of anal about this kind of stuff so I really wonder why Yamaha put the rev markings on the dipsticks if the recommended 8.5 oz of lube results in the same fluid level on both the std & rev models. Things that make you go Mmmm........??????
 
Bump. Seems this unanswered question comes back every year. Strange that no ones from Yamaha has a clear answer.

Sure sure we can put 8 oz and call it a day which is what everyone seems to be doing. Even dealers and straight from factory. But it would be nice to know the through about the dip stick reverse lines! Is it a myth or have we all be putting a bit to much oil.

3 oz seems low. Anyone has been running the reverse line as per dipstick all these years?
http://www.ty4stroke.com/threads/2005-vector-er-chaincase-oil-amount.130269/page-2

Even when the Apex came out no one could tell why, 4 pages later.
http://www.ty4stroke.com/threads/chaincase-oil-level-confusion.34854/page-4
 
I called Port Yamaha, my dealer, Ulmer, and posted this same question a year ago. I never found a good explanation. Some say to fill it ip to STD mark, others say only to REV. I concluded that anything between 3 and 8.5 oz is fine.
 
Metallicat said:
I called Port Yamaha, my dealer, Ulmer, and posted this same question a year ago. I never found a good explanation.
Click to expand...

Correct and you posted your findings here which is why I linked it above. Good read.

You would think after what, 12 years (starting with the RX-1), someone from Yamaha would enlighten us.
 
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