Never Easy

[Scattergun2570]

So I have one of these really inexpensive Shimano FX 1000FB spinners. Great value in my opinion..but I never saw one of these torn apart by anyone,,soooooo.....yep took it apart. So it's real simple inside when no IAR is involved,but somehow I always have an issue reassembling. Something I have not seen up to this point is the shape of the oscillation gear.,it's not round. When I buttoned it back up,the handle could barely get the gears turning. Only thing I can guess is the oscillation slider,and the oscillation gear have to be installed at a particular point. There are marks"arrows "on the oscillation gear,but I am not sure if that's what they are for,and if they are,I have no idea where it is supposed to be lined up with.

Am I even close to being right,or am I missing something else?

[exp2000]

See attached.

I call this the square cog design. I think that Shimano calls it "variwrap oscillation"?

It is designed to vary the spool oscillation speed to improve line wrap.

If you do not align the arrow marks on the gears, the reel will bind up and you may even cause damage.

~

[Scattergun2570]

See attached.

I call this the square cog design. I think that Shimano calls it "variwrap oscillation"?

It is designed to vary the spool oscillation speed to improve line wrap.

If you do not align the arrow marks on the gears, the reel will bind up and you may even cause damage.

~

Well at least my thinking was correct,,but I still can't seem to get it correct,,is this the way it should be? Can you explain exactly how it should be put in?

[exp2000]

The arrows should line up with the centers of the two cogs.

I find a 15 cm long piece of pink or yellow braid useful as an alignment tool.

The pin on the oscillating gear is also an arrow for this purpose.

First align the oscillating gear with the maingear center.

Then install the maingear whist making sure the arrows on it align with the oscillating gear center.

If the arrows do not align, remove the maingear and try again.

Ultimately you should have four arrows in straight alignment with the centers: Four arrows along the red line.
~

[Scattergun2570]

The arrows should line up with the centers of the two cogs.

I find a 15 cm long piece of pink or yellow braid useful as an alignment tool.

The pin on the oscillating gear is also an arrow for this purpose.

First align the oscillating gear with the maingear center.

Then install the maingear whist making sure the arrows on it align with the oscillating gear center.

If the arrows do not align, remove the maingear and try again.

Ultimately you should have four arrows in straight alignment with the centers: Four arrows along the red line.
~

Still not sure I have it right is this the way the arrows should be?  When I turn the pinion gear with  The side cover off it rotates smoothly but once I put the cover on and screws back in it gets messed up again and I tried less and more torque on the screws,still no good.

[Scattergun2570]

The arrows should line up with the centers of the two cogs.

I find a 15 cm long piece of pink or yellow braid useful as an alignment tool.

The pin on the oscillating gear is also an arrow for this purpose.

First align the oscillating gear with the maingear center.

Then install the maingear whist making sure the arrows on it align with the oscillating gear center.

If the arrows do not align, remove the maingear and try again.

I don't think I am understanding what the cogs are.

Ultimately you should have four arrows in straight alignment with the centers: Four arrows along the red line.
~

[Scattergun2570]

See attached.

I call this the square cog design. I think that Shimano calls it "variwrap oscillation"?

It is designed to vary the spool oscillation speed to improve line wrap.

If you do not align the arrow marks on the gears, the reel will bind up and you may even cause damage.

~

Not sure what the cogs are

[exp2000]

Still not sure I have it right is this the way the arrows should be?  When I turn the pinion gear with  The side cover off it rotates smoothly but once I put the cover on and screws back in it gets messed up again and I tried less and more torque on the screws,still no good.

Yep, looks good to me.

If it is tight, try removing a shim on the maingear.

But if you have applied force to the handle without the cogs having been first aligned, damage may have occurred to the oscillating gear or drive gear teeth.
~

[Scattergun2570]

Still not sure I have it right is this the way the arrows should be?  When I turn the pinion gear with  The side cover off it rotates smoothly but once I put the cover on and screws back in it gets messed up again and I tried less and more torque on the screws,still no good.

Yep, looks good to me.

If it is tight, try removing a shim on the maingear.

But if you have applied force to the handle without the cogs having been first aligned, damage may have occurred to the oscillating gear or drive gear teeth.
~

Well I think I must have gotten it correct,,it's running smoothly,minus one main gear shim. It feels better than before,no "Geary" feeling anymore. I guess after 15yrs it needed some new grease, but I have to hand it to Shimano,this $20.00 reel lays line terrific...

[foakes]

Good teamwork, guys!

Best,

Fred

[boon]

A future caution for anyone servicing Shimano spinners with these oval/square oscillation gears, a single rotation of the handle with the gears misaligned (depending on the extent of the misalignment) can damage either the gears or the body of the reel.

[foakes]

A future caution for anyone servicing Shimano spinners with these oval/square oscillation gears, a single rotation of the handle with the gears misaligned (depending on the extent of the misalignment) can damage either the gears or the body of the reel.

Yep...

Best,

Fred

[philaroman]

if you ever do an Okuma -- same principle...  get Okuma's generic instructions for "eliptical oscillation" & pay attention (photo) when you take it apart

[Scattergun2570]

A future caution for anyone servicing Shimano spinners with these oval/square oscillation gears, a single rotation of the handle with the gears misaligned (depending on the extent of the misalignment) can damage either the gears or the body of the reel.

Well I did spin it a few times misaligned ,hopefully it didn't damage it,,but the reel feels very good,"fluid" no slop anymore,so maybe I got lucky.

[boon]

A future caution for anyone servicing Shimano spinners with these oval/square oscillation gears, a single rotation of the handle with the gears misaligned (depending on the extent of the misalignment) can damage either the gears or the body of the reel.

Well I did spin it a few times misaligned ,hopefully it didn't damage it,,but the reel feels very good,"fluid" no slop anymore,so maybe I got lucky.

Lucky Ironically as they get more expensive and the tolerances get smaller and the rigidity of the parts higher there's more chance of damaging something.