[Topspinmo]

Originally Posted by biker1

According to Yamaha, up to 10% ethanol is fine. The problem with ethanol is that it absorbs water so a fuel stabilizer would be good if the cart sits for long periods of time. If you are using the cart regularly, it isn't clear that a fuel stabilizer will make any difference. I have 11,000 miles with regular gas with 10% ethanol and no issues.

Regarding oil changes, I change the oil every 50-75 hours of running time (roughly every 1000 miles). This is in line with the Yamaha owner's manual (1250 mile oil changes). Without a used oil analysis, it is impossible to know whether this is too frequent or not. It only takes a quart so erroring on the conservative side is really not an issue. Mobil 1 from Walmart ($24 for 5 quarts) is a cost effective synthetic. The air filter should be good for about 10K miles. The differential oil (1.8 quarts) should also be changed periodically. The Villages Golf Cart store has the OEM differential oil with the friction modifiers for a very good price. A shot of grease for the clutch if it has a zerk fitting is probably a good idea also.

I found two grease zerks on the drive line. One on the centrifugal clutch (as you mention) and one on the transaxle pulley ujoint to the transaxle.