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. :help:
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.
Hmmm, driven shaft on my engine looks like pic in manual with the cork looking donut thing removed. Anybody use the cork spacer?
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.
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.
Cool! :metal: :righteous:
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. :bang:
Use Yamaha factory manual only. Others will lead you off into confusion and/or misinformation.
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?
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?
You can still buy plunger shims in different sizes from Yamaha. .03 , .05 , and .10
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!
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.
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
I made some out of an old feeler gauge, its not very hard to do.
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.
Measure at q, the top?
.007-.008 thou is stock. It is measured at the very top of the pump stroke. Measure in between the fender washer and the spool wheel.
With modern 2 stroke oils should be fine.
I do run more than that on my all out performance ported engines and is up to .012 to .015 on them.
They are in the 60hp range at wide open throttle on street with pump gas *93
or 40:1 premix.
Chuck
Quote from: Greaser Greg on 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?
This figure explanation has the colors right, but not the sides. The grey wire goes to the point on the right hand side of the plate, orange on left.