Owning an E-Z-Go gas golf cart can be a great experience if the gas engine is maintained and serviced correctly.
These are the easy steps to perform a basic tune-up on your E-Z-Go gasoline engine using a minimum of tools and an EZGO tune up kit.
Step 1: Air filter
1976-1994 Marathon 2-Cycle
The canister air filter is accessed by raising and lifting out the cart seat, locating the cylindrically shaped airbox with a cap on the end, and unsnapping the two holding clips on each side. Remove the lid and then the filter. Installing your new air filter is the reverse of these steps.


1991-1994.5 Marathon 4-cycle
The filter for this model is rectangular and is accessed by unsnapping the spring clips and swinging the cover open. Remove the filter and inspect; If it is only lightly dust-covered, you can blow the dust off with compressed air. If oily or covered with think dirt, replace with a brand new filter.


1994 – 2005 Medalist / TXT 4-cycle 295cc / 350cc
The filter for this model is rectangular and is accessed by unsnapping the spring clips and swinging the cover open. Remove the filter and inspect; If it is only lightly dust-covered, you can blow the dust off with compressed air. If oily or covered with think dirt, replace with a brand new filter.


Now the engine can breathe better, next step is the Spark Plug.
Step2: Spark Plugs
Despite the many years of EZGO carts, there are only two sparkplugs that EZGO carts use, BPR4ES and BPR2ES; the latter for Kawasaki engined EZGO carts.

The recommended spark plugs are manufactured by NGK, number NGK BPR4ES. Locate the spark plug(s) on the top of the engine and remove the cable, exposing the top of the plug. Use a spark plug socket and ratchet to remove the spark plug and inspect the ceramic insulator.

The ceramic insulator should be ivory colored, light brown to brown would indicate the fuel mixture is too lean. If it is black in color, you might be running too rich of a fuel mixture, requiring an adjustment to the air/fuel mixture screw.

Check the gap with a spark plug gap tool (cheap or free at most parts counters) and set this gap to .028 – .030.
Replace the spark plug and screw into place using the socket and your fingers to prevent cross-threading. Lightly tighten with the ratchet…no need to strip it out by tightening too much. Push the wire connector back on to the spark plug. Inspect the connector boot and wire for any cracking or damage and replace if needed.
Step 3: Fuel

The fuel filter is located in line between the fuel tank and the fuel pump. If the housing is clear plastic, make sure that the fuel inside is not dark amber or discolored from age. To remove the filter, disconnect the hose from the fuel pump by using a pair of pliers to squeeze the clamp ends together and sliding the expanded clamp further down the line. Raise the hose up and allow any excess fuel to drain back into the fuel tank. Put the hose back in place on the pump and secure the clamp with pliers again.
Now remove the hoses from both ends of the filter, keeping a mental note of the orientation of the filter body, or take a picture with a cell phone…we don’t want to put this on backward. Tap the inlet side of the filter (the tapered end) on a paper towel-lined surface and see if any contaminants are dislodged and stain the paper towel.
Replace the used filter with your new filter by connecting the filter to the gas line and secure it with the clamps. Sometimes there is a second filter located underneath the carburetor facing the front of the cart. Check to see if you have one and make sure it is also clear of deposits.
Conclusion
All of these adjustments can be made on your EzGo Golf Cart without spending more than your time and a tune up kit.
There are three Tune Up Kits for EZGO carts:
This tune up kit with oil filter can be compatible with 1994-2005 E-Z-GO 4 cycle models.
Replaces OEM Part Number: 9190
This tune up kit with an oil filter is compatible with 1996-Present E-Z-GO 295cc and 350cc 4 cycle models.
Replaces OEM Part Number: 9306
This tune up kit is compatible with E-Z-GO TXT and RXV models with Kawasaki motors.
Replaces OEM Part Number: 2147
Do you have a Club Car you need a tuneup kit for?
Perhaps a Yamaha Golf Cart? We have tune up guides for those makes as well.
Tune Up Guide for ClubCar Golf Cart
Tune Up Guide for Yamaha Golf Cart