What type of oil does the yamaha golf buggy use ?

Question edited for clarity.
Question moved to golf.

Solenoid. (electro-magnetically operated switch)

What are the symptoms of a bad solenoid in a golf cart? On an electric golf cart, the most common symptom is the solenoid is not delivering electricity to the controller when the vehicle's ignition is turned on. In normal operating conditions, the solenoid clicks on and off with the ignition switch. A failing solenoid will generally not click.
https://www.google.com/search?q=patterson+golf+buggy+solenoid

If it clicks, it is more likely to be the accelerator potentiometer, basically the variable gas pedal. Great resource in the link for Golf Cart woes.

https://www.golfcartsforsale.com/blog/5-common-electric-golf-cart-problems-solve/

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• Hillman Pro Hawk GT Sport Single Seat Golf Buggy
• Lithium (Li-Ion) & Lead Acid Battery Options Available
• Delivered Fully Assembled & Tested
• Modular Design Fits in Most Cars
• Steering Wheel & Foot Accelerator System
• 24V DC 1000 Watt Motor
• Can be Purchased Without Batteries
• Balloon Tyres
• Speed 0 - 12.5 kmph
• New Model for 2019
• 12 Month Warranty for Buggy

take a sample to a suspension shop

Make sure lights are off before starting.

Your Trusted Source for Golf Cart Parts Accessories

The first three digits of the serial number are the model identification the remaining digits the unit production number
On my buggy there is a lable behind the drivers seat (lift the seat)indicating the model and year of manufacture

my ezgo golf buggy back fires, how can I fix this?

Hello,
Just a thought, Have you looked for the solenoid or similar at a motorcycle wreckers/breakers? as they are all very similar and really doesn't have to be Yamaha.
Good Luck!
Please remember to rate my effort,
Paul 'W'
Onyer~EDson(:0) {#><U.K.