Tsumara bars issue

huskyboy · Oct 14, 2019

RI Chevy said:
I wonder why they didn't just make an exact copy of the OEM bars?

To *f-word with us

... who knows?

Philbert · Oct 14, 2019

Jimmy in NC said:
Well the results are in. . . . Laying the Tsumara on top of the Stihl the issues glare at you. The Tsumara is shorter and has a narrower tail profile.

It's clearly an issue for someone expecting a direct replacement.

It would be interesting to hear from Tsumura to learn if these were intentional differences; if they think there are performance advantages; if they designed the bar for another saw and just made a STIHL version; etc. Of course, they could have still made a different profile bar, and tweaked it to take the common size chain loop.

Philbert

Jimmy in NC · Oct 14, 2019

At first I thought for an 8 pin rim ....but to do that the tail should be wider to accommodate better.

I think the tips are better than OEM. I think the rails are better than OEM. For this use though it isn't worth the hassle.

LogSawyer74 · Oct 1, 2021

Just ran into this. I'm trying to put a 32" Tsumura Light and Tough on a Stihl 461. The bar is almost adjusted out as far as it will go. When just spinning the chain by hand in the same direction the engine would spin it, it wants to climb out of the bar grove on the top of the bar. I'm guessing because of the distance between the rim sprocket and the bar, but I don't know..... Pretty disappoint for a bar that cost $140 bucks

RI Chevy · Oct 1, 2021

Take out a couple of links??? Does the bar drive link match up to your chain?

jmester · Oct 1, 2021

I have had a few tsumura bars do the same thing. Groove might be a little tight or the clear coat gets down in the rail and keeps the chain up a little out of the groove. Usually a few good piss revs will seat it. Then tension the chain again.

Maybe that is not what's happening to you.

RI Chevy · Oct 1, 2021

Maybe I misunderstood?

Wonkydonkey · Oct 2, 2021

LogSawyer74 said:
Just ran into this. I'm trying to put a 32" Tsumura Light and Tough on a Stihl 461. The bar is almost adjusted out as far as it will go. When just spinning the chain by hand in the same direction the engine would spin it, it wants to climb out of the bar grove on the top of the bar. I'm guessing because of the distance between the rim sprocket and the bar, but I don't know..... Pretty disappoint for a bar that cost $140 bucks

How many dl on your chain, is it a new chain ?
It seems a bit odd that it’s adjusted almost fully out.
Pics help as well

00wyk · Oct 2, 2021

LogSawyer74 said:
Just ran into this. I'm trying to put a 32" Tsumura Light and Tough on a Stihl 461. The bar is almost adjusted out as far as it will go. When just spinning the chain by hand in the same direction the engine would spin it, it wants to climb out of the bar grove on the top of the bar. I'm guessing because of the distance between the rim sprocket and the bar, but I don't know..... Pretty disappoint for a bar that cost $140 bucks

As stated previously by others, you are running in to a chain fitment problem, not a bar problem. You need to remove at least one drive link, if not two. My Tsumura stated clearly 102E vs the 105 many other 32's use.

https://opeforum.com/threads/tsumara-bars-issue.17906/page-4#post-941151

Tsumara bars issue

huskyboy

Sorta a husqvarna guy...

Philbert

Chainsaw Enthusiast

Jimmy in NC

Pinnacle OPE Member

LogSawyer74

Well-Known OPE Member

RI Chevy

Mastermind Approved!

jmester

Pinnacle OPE Member

RI Chevy

Mastermind Approved!

Wonkydonkey

Plastic member

00wyk

Here For The Long Haul!

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