Drive sprocket spacer

Greaser Greg · October 26, 2019, 12:07:33 PM

How important is it? What does it do?
I don't have one. Anybody know where to get one? The pic in manual looks like cork, pic in eBay add is metal.

What will happen if I run without it? Bike didn't come with one so should I look for something that may be damaged from it not being used by p.o.?
I already put the sprocket on. Didn't see anything worn on the case. May not have ever been run without it; I bought it as an abandoned project.

Greaser Greg · October 26, 2019, 09:54:22 PM

Hmmm, driven shaft on my engine looks like pic in manual with the cork looking donut thing removed. Anybody use the cork spacer?

RDFL · October 26, 2019, 10:25:28 PM

There is a rubber seal and metal collar you must have looked up the collar, the thing in his hand is rubber seal. Don't know why it has that cork appearance maybe greased.

SUPERTUNE · October 26, 2019, 10:31:32 PM

What the crap is that? Never seen a cork gasket /spacer ever on a RD.

I've taken at least a 100 apart in 39 years...
Mis-print.

Greaser Greg · October 27, 2019, 12:49:36 AM

Cool!

Thanks guys! Looks like I'm all good there. No greasy corks for me, ick. 8)
Maybe I got confused reading the multi-model manual.

SoCal250 · October 27, 2019, 02:09:22 AM

Use Yamaha factory manual only. Others will lead you off into confusion and/or misinformation.

Greaser Greg · October 27, 2019, 10:39:46 AM

I have a '71. Are the R5C's that much different? So far everything else has been right, except for some wire colors.
What do you guys use for shims in the oil pump?

quocle603 · October 27, 2019, 10:48:29 AM

I just use whatever shim (washer) they gave as a stock one. Not sure if they are all the same. Are you looking for the dimensions?

202wagon · October 27, 2019, 01:14:02 PM

You can still buy plunger shims in different sizes from Yamaha. .03 , .05 , and .10

Greaser Greg · October 27, 2019, 01:38:20 PM

Quote from: 202wagon on October 27, 2019, 01:14:02 PM
You can still buy plunger shims in different sizes from Yamaha. .03 , .05 , and .10

Perfect. Thanks a lot!

m in sc · October 27, 2019, 04:36:26 PM

thats weird. maybe they were planning on a felt washer there to keep the crap off the seal but never made it to production? ive never seen that either.

SUPERTUNE · October 28, 2019, 07:22:16 AM

Quote from: Greaser Greg on October 27, 2019, 01:38:20 PM
Quote from: 202wagon on October 27, 2019, 01:14:02 PM
You can still buy plunger shims in different sizes from Yamaha. .03 , .05 , and .10
Perfect. Thanks a lot!

Don't buy the .03 and .05 shims they're useless...buy like 5 or 10 of the .10's. I think there almost $3 each?
. Shim (T=1.0) U.R.
137-13137-00-10

Chuck

klaird · October 28, 2019, 09:54:51 PM

I made some out of an old feeler gauge, its not very hard to do.

Greaser Greg · October 28, 2019, 10:28:57 PM

Do you measure the minimum clearance at the top, with the plunger out or in? Mine has the .20 mm gap at the top, plunger in. Spark plugs are very wet, and lots of smoke, engine misses. One of many things I'm looking at on a fresh assembly.

Greaser Greg · October 28, 2019, 10:33:44 PM

Measure at q, the top?

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Drive sprocket spacer