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Zerc, zerk fitting for 25hp Yamaha? |
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Dziadzi 
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Joined: June-15-2018 Location: Wilkes-Barre PA Status: Offline Points: 17 |
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 Topic: Zerc, zerk fitting for 25hp Yamaha?Posted: June-23-2018 at 1:13pm |
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While using my new grease gun to infuse grease into my F25 Yamaha outboard, I somehow broke off the zerc (zerk) fitting that is attached to the tiller. i bought an "Ezee out" to remove the broken off fitting, however, I don't know if the replacement should be an SAE "1/4"--28" fitting or a "metric 6mm" fitting. Sure, I can buy one on ebay for almost $10 (including shipping), but I have dozens of both the SAE and the metric fitting that I already own. I would appreciate hearing from anyone as to which fitting I need to use.......SAE or Metric.?
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Frank
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Duane in Indy
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Posted: June-23-2018 at 4:46pm |
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To add more confusion it could be 1/16 npt.
Get the old one out and compare it to your stash. |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: June-23-2018 at 4:55pm |
Or find a Yamaha outboard web site. |
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Dziadzi
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Posted: June-23-2018 at 5:08pm |
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Both the metric and SAE look similar. I wish it were that easy. I just would like to know if Yamaha used metric or SAE fittings.
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Frank
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Duane in Indy
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Posted: June-23-2018 at 5:09pm |
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The internut says it's a metric M6x1.0
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Dziadzi
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Posted: June-23-2018 at 5:12pm |
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I have been to the Yamaha website. No information about that topic.
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Frank
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Duane in Indy
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Posted: June-23-2018 at 5:17pm |
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I think you are going to have to remove the broken one before you install the new one. Maybe you could look at it then and decide which one to use.
Yamaha site may show where it is but I think you would be lucky if they gave any info on sizes. |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Dziadzi
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Posted: June-23-2018 at 5:19pm |
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Thanks, Duane. May I ask where it says that?
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Frank
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Duane in Indy
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Posted: June-23-2018 at 5:21pm |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Dziadzi
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Posted: June-23-2018 at 5:22pm |
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The difference in the threads is indistinguishable to my eyes.
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Frank
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Duane in Indy
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Posted: June-23-2018 at 5:23pm |
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take one of the other ones out and compare it to new ones
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Duane in Indy
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Posted: June-23-2018 at 5:28pm |
If thats the case then either one will probably go in Metric is .039 pitch Sae is .036 pitch Metric .236 dia Sae .250 dia Basically take your pick and see which one screws in the best. |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Dziadzi
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Posted: June-23-2018 at 5:29pm |
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Thanks for that website, Duane..........I am going to try the metric. Good catch!
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Frank
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KENO
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Posted: June-23-2018 at 6:46pm |
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Based on a fair amount of experience with Yamaha stuff with grease fittings, it's about 99.9% sure to be 6 mm.
Just think Ya-Ma-Ha Ja-Pa-Nese metric whether it's put together in Japan or any other country that they have plants. |
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Duane in Indy wrote: