I agree these things dont last forever.

Loosing Power
 

Just so happens it happened to me last week. Loosing power, then within a short period of time no power. Had it scheduled for service last Wednesday. Tried driving it from Hadley to Brownwood. I got to the Colony Rec Ctr. had to call Cart Aid. Thankfully I had that, it would've been $100 just for the tow. Anyway, They put the backing plates on which is why it was going in for service in the first place. $79 each. They go on the rear wheels I guess. They had been on back order, they claimed they had 150 scheduled to put on. Not sure what they do. But covered by warranty. And, they replaced the muffler. $279. Claimed it was totally clogged. The steel wool like material in the mufflers of the newer quiet tech engines becomes clogged. I know a number of people having the same issue. Not sure if the replacement muffler has the same spark arrestor. Sounds like a factory defect to me. The diagram that someone showed above, explains it.

Probably asked why he was calling if he already had a service appointment scheduled with someone else.

Lots of good suggestions here! But personally I wouldn’t ask the dealer to do it because I’m sure they’ll tell you it’ll ruin the warranty. Do it yourself or have a friend do it or show you how to do it. I usually fixed my own cart & I never had the dealer tell me something was missing or messed with. I had a 2018 Yamaha cart but never had this issue with mine. Most of the things that are mentioned here you can look at them & see if that’s the problem. Good Luck!

Golf cart
 

If it is a quiet tech it's probably the spark arrestor plugged up. Mechanic from dealer removed the one on my 2019. It's not as quiet but has all it's power

I had the same problem last year and the culprit was the secondary clutch. Had it replaced (under warranty).

I haven’t had this issue yet. However thanks to all for sharing the fix.👍🏻

Fair Way Golf Carts Mobile Service
 

We can come see you Monday afternoon....Ryan our lead technician has almost 10 years experience in the Villages 352-571-3100

It’s good that you have that service appointment. My understanding is that the Lithium Ion battery packs have a 10-year warranty. You could always rent a cart for a few days from the rental fleets at any of The Villages Golf Cart stores. The cost is quite reasonable.

If I misunderstood that you had a Li ion powered cart, disregard this message.

Yamaha cart
 

It could also be your battery. If your battery is weak, a gas Yamaha will not perform properly. It happened to me yesterday and I replaced my battery and it working fine now. The weather here is really tough on batteries. Thanks.

Hi. Believe it is your secondary clutch. That is covered by Yamaha warranty for 4 years from date of purchase. If it is the clutch it will get worse over time.

Poor power and acceleration happened to me on my 2020 that I purchased new from Villages Golf Car in Brownwood.

Pulled up into the Brownwood location after a game of golf. Diagnosed the problem on the spot, and took it in for service immediately. Got a loaner at no charge, and continued home. Picked up the cart 3 days later.

The problem was due to decomposed material in the muffler. Warranty replaced with a new muffler at no charge to me.

Wonder if the 2020's have the same issue? My wife's cart suddenly started doing it too. Would barely move. Interestingly I had just put gas in it and that is when the problem started. I purchased some fuel additive to clean the injectors and it started to run ok. Maybe bad fuel or the same muffler issue??

Call Titan Golf Cart! 3523487381 - Scott - Did Great job. Took out the spark arrestor right in our driveway!

It sounds to me like your muffer has stopped up. I had the same issue. Read your owners manual only unleaded fuel only. Thats what my 2017 manual said