G2 cart lurches after brake is released

expo · 10-18-2017, 09:43 AM

First ask advice post.
I bought a nice G2 (cosmetically and unmolested) and after a few weeks of 8 mph top speed I finally noticed rust on the clutch sheave where the belt wasn't riding. Read some threads and found a weight had let go in the primary and cracked the dust cover. Installed a new clutch and it made a world of difference in top speed.

Now when I step on the accelerator and JUST after the brake releases the cart lurches due to the carb opening and belt engaging at the same time. Not bad if you're in a hurry but dangerous with people present.
What adjustments need to be made to smooth out the transition?

BrutalSoldier · 10-18-2017, 10:34 AM

What is the new clutch and did a new belt go with it. Two things I have done to allow my carts to idle are....
1) Put a shim in primary clutch to slow engagement.
2) Add a bit more slack in drive belt to slow engagement.

I am new to building carts so that might not be the correct answers but it works for me.

Spicyunicorn · 10-18-2017, 11:10 AM

How tight is the belt?

expo · 10-18-2017, 03:10 PM

Not a new belt. It measures 1 3/16 so I figured it was good to go. The clutch engages just above the slow idle (starter speed). With the other (broken) clutch it engaged after the brake released. If I really feather the pedal I can get it to engage without a lurch if the brake is not locked down. What needs adjusting--brake/ throttle, and how? Where would the shim be placed?

The new clutch was purchased on ebay from a cart builder. Claimed to have been taken off a new Yamaha cart for a custom build. It looked almost brand new. Priced accordingly.

cgtech · 10-18-2017, 04:46 PM

Adjust throttle cable just in front of the governor arm (just behind engine). The cable that goes from governor to carb. Adjust it till the carb doesn't begin to open before the starter starts cranking. After adjustment, confirm that throttle at carb still opens fully (does not have to touch the "stopper block" to get full throttle).

expo · 10-19-2017, 09:16 PM

Well, that throttle cable adjustment nut was a bitch to get to and rusty but I persevered and got it delayed to have the throttle open after the starter cranks. A little grease on the brake trip helped also. Thanks all for the responses esp cgtech! expo out

10-18-2017, 09:43 AM	#1
expo Not Yet Wild Join Date: Oct 2017 Location: Lodi, Ohio--Florida when it's cold Posts: 47	G2 cart lurches after brake is released First ask advice post. I bought a nice G2 (cosmetically and unmolested) and after a few weeks of 8 mph top speed I finally noticed rust on the clutch sheave where the belt wasn't riding. Read some threads and found a weight had let go in the primary and cracked the dust cover. Installed a new clutch and it made a world of difference in top speed. Now when I step on the accelerator and JUST after the brake releases the cart lurches due to the carb opening and belt engaging at the same time. Not bad if you're in a hurry but dangerous with people present. What adjustments need to be made to smooth out the transition?

10-18-2017, 10:34 AM	#2
BrutalSoldier Addictive Personality Join Date: Jun 2017 Location: Rio Linda, Ca. Posts: 1,289	Re: G2 cart lurches after brake is released What is the new clutch and did a new belt go with it. Two things I have done to allow my carts to idle are.... 1) Put a shim in primary clutch to slow engagement. 2) Add a bit more slack in drive belt to slow engagement. I am new to building carts so that might not be the correct answers but it works for me.

10-18-2017, 11:10 AM	#3
Spicyunicorn Gone Wild Join Date: Jun 2015 Location: NW Iowa Posts: 1,669	Re: G2 cart lurches after brake is released How tight is the belt?

10-18-2017, 03:10 PM	#4
expo Not Yet Wild Join Date: Oct 2017 Location: Lodi, Ohio--Florida when it's cold Posts: 47	Re: G2 cart lurches after brake is released Not a new belt. It measures 1 3/16 so I figured it was good to go. The clutch engages just above the slow idle (starter speed). With the other (broken) clutch it engaged after the brake released. If I really feather the pedal I can get it to engage without a lurch if the brake is not locked down. What needs adjusting--brake/ throttle, and how? Where would the shim be placed? The new clutch was purchased on ebay from a cart builder. Claimed to have been taken off a new Yamaha cart for a custom build. It looked almost brand new. Priced accordingly. Last edited by expo; 10-18-2017 at 03:21 PM.. Reason: Add narrative

10-18-2017, 04:46 PM	#5
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: G2 cart lurches after brake is released Adjust throttle cable just in front of the governor arm (just behind engine). The cable that goes from governor to carb. Adjust it till the carb doesn't begin to open before the starter starts cranking. After adjustment, confirm that throttle at carb still opens fully (does not have to touch the "stopper block" to get full throttle).

Today
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10-19-2017, 09:16 PM	#6
expo Not Yet Wild Join Date: Oct 2017 Location: Lodi, Ohio--Florida when it's cold Posts: 47	Re: G2 cart lurches after brake is released Well, that throttle cable adjustment nut was a bitch to get to and rusty but I persevered and got it delayed to have the throttle open after the starter cranks. A little grease on the brake trip helped also. Thanks all for the responses esp cgtech! expo out

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