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01-14-2010, 06:04 PM
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#1 |
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Not Yet Wild
Join Date: Jan 2010
Posts: 2
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Oil pump adjustment?
Does the oil pump on a G1 have an adjustment to limit or increase oil flow to the carburetor? Thanks for any help. Jrtoter
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01-14-2010, 07:02 PM
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#2 |
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Gone Wild
Join Date: Jun 2009
Location: Heluvabump,VT
Posts: 623
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Re: Oil pump adjustment?
Oil volume is regulated by a pressure-sensing pod on top of the pump with a rubber hose going to the muffler. Low pressure= low engine load/RPM= lower oil output. High pressure=high engine load/RPM= higher oil output. According to the Yamaha manual,gas/oil ratio will vary between 150:1 and 300:1. There is no external mechanical adjustment to change the oil output.
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01-14-2010, 07:20 PM
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#3 |
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Not Yet Wild
Join Date: Jan 2010
Posts: 2
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Re: Oil pump adjustment?
Thanks for the quick reply GMB74. So I take from what you say, there is no mechanical adjustment on the oil pump.
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06-28-2021, 08:23 AM
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#4 |
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Not Yet Wild
Join Date: Mar 2008
Location: Horsey country in Mich.
Posts: 48
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Re: Oil pump adjustment?
Some/all? have an clicker type fine output adjust. It's the hew plastic surrounding the screw.
cliff |
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07-01-2021, 05:51 AM
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#5 | |
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Searching for The Way
 Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: Oil pump adjustment?
Quote:
 Back from the dead. Just razzing you. Your posts seem to be on point, are you a mechanic? |
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07-01-2021, 09:30 AM
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#6 |
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Not Yet Wild
Join Date: Mar 2008
Location: Horsey country in Mich.
Posts: 48
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Re: Oil pump adjustment?
Engine engineer.
Yes I know it's old but good info needs updating with new/different finds. I still wrench 73 H1 Kaw 74 H1 Kaw 79 Suburban Sachs 13 RZR800 Polaris 78 G1 Yam Keeps me off the streets so to speak cliff |
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07-02-2021, 09:48 PM
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#7 | |
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Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,436
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Re: Oil pump adjustment?
Quote:
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