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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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08-23-2021, 12:59 PM | #1 |
Not Yet Wild
Join Date: Apr 2021
Location: IA
Posts: 9
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Yamaha G1 only goes 2mph.... Clutch Issues???
Just finished rebuilding G1 engine. Replaced starter generator. Replaced Brake pads. Engine runs great but I know nothing about clutch drive system. cart only goes one speed, about 2mph max...
Last edited by hamatronics; 08-23-2021 at 01:29 PM.. Reason: more info in the title |
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08-23-2021, 03:32 PM | #2 | |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
Quote:
Secondary clutch spring and ramps are the most important. Check at the bottom of my post for a link to the service manual |
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08-23-2021, 03:58 PM | #3 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,441
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
Are you sure the engine is running? If you take your belts off, does the engine rev up really high and sound like a snowmobile or dirt bike? Do you see smoke coming from the exhaust? Is the muffler getting hot?
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08-23-2021, 04:31 PM | #4 |
Not Yet Wild
Join Date: Apr 2021
Location: IA
Posts: 9
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
The engine is definitely running, muffler is hot after one trip around the house
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08-23-2021, 04:48 PM | #5 |
Not Yet Wild
Join Date: Apr 2021
Location: IA
Posts: 9
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
Pics of the clutch
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08-23-2021, 04:51 PM | #6 |
Not Yet Wild
Join Date: Apr 2021
Location: IA
Posts: 9
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
A little more history. I pulled this thing out of the weeds on a farm. The engine was half dissasembled and in a big box. No clue how long it was sitting.
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08-23-2021, 05:11 PM | #7 |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
Get those plastic air shrouds on the engine they direct air flow from the fan on the stator across the cylinder and heading for cooling
2 mph sounds like starter cranking speed |
08-23-2021, 05:17 PM | #8 |
Not Yet Wild
Join Date: Apr 2021
Location: IA
Posts: 9
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
I don't have the shrouds. The starter is brand new and so is the battery which is fully charged.
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08-23-2021, 05:33 PM | #9 |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
That’s a Yamaha clutch so you’ll need the puller if it is indeed what your area of attack is going to be. Jack the jack up in the air and see if it actually starts and take fuel.
You going to want air shrouds on that engine or it’ll over heat and melt down. I do have shroud sets. Do you have the shrouding/guard over the flywheel? |
08-24-2021, 05:45 AM | #10 |
maintaining a low profile
Join Date: Oct 2009
Location: SW Virginia USA
Posts: 6,316
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Re: Yamaha G1 only goes 2mph.... Clutch Issues???
The belt and sliding secondary sheave are worn beyond practical use...
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