Beta Riders Club Discussion Forum

by **jcarlson9** » Sat Sep 24, 2016 1:10 pm

I was just reading that about 100 hrs. the oil pump gears on the 4 strokes should be replaced. Is this really necessary ? Thanks.

by **Arctra** » Mon Sep 26, 2016 3:06 am

Your call mate...

When I changed mine they were OK, but they're a cheap part and pretty easy to replace. See my post with pics here...
http://www.thumpertalk.com/topic/112923 ... ry12656455

by **Knox Enduro** » Tue Sep 27, 2016 5:03 am

We changed one set at 100 hours and they looked fine. Just changed a set on a 400RR that has had a tough life of overheating in technical sections, and although the teeth looked fine, the interior hole on one had worn considerable allowing the gear a lot circular movement. I will add that the customer had gotten the bike hot enough at times that the clutch would slip totally, (oil pump gears run in the transmission oil) boiled clutch fluid, and broken oil sight glass in the engine cover, not to mention boiling over the radiators. Never blew a head gasket, and the motor still runs great.

Have read reports of bikes doing over 200 hours, depends on maintenance and how hard the bike is ridden.

You also have the option to put in the steel gears.

by **Marty Moose** » Tue Sep 27, 2016 6:05 am

Did mine at 100hrs easy job and cheap. Its a service item just do it like Nike

MM

by **Bandicoot** » Tue Sep 27, 2016 4:02 pm

Its not a end of the world cost to do them even if you replace with the steel ones.

Just replace and its 1 thing you dont have to worry about again

by **Nicajohn** » Tue Sep 27, 2016 6:34 pm

Did mine at 105 and looked brand new. But I had steel ones so I don't need to worry now

by **jcarlson9** » Thu Sep 29, 2016 3:23 pm

thanks. I guess i'll do it soon, but I think they use nylon for a reason. That's what i'll replace them with.

by **NJZoltan** » Thu Dec 22, 2016 2:22 pm

Marty Moose wrote:Did mine at 100hrs easy job and cheap. Its a service item just do it like Nike

MM

Did you do it your self? Any seals required along with the replacement of the gears? I'm thinking about doing it myself.

by **Arctra** » Fri Dec 23, 2016 12:30 pm

No seal replacements needed - it's a "do-able" DIY job for sure.

by **Marty Moose** » Sat Dec 24, 2016 12:19 am

Yep I did it myself easy if you have a little mechanical aptitude. You may need a side case gasket thats all.

MM

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nylon oil pump gear replacement

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