EZGO Engine Air/Fuel Mixture Adjustment & EZGO Valve Adjustment
Posted by Joe Mutton on
Not sure which EZGO Cart you have? Our handy guide will tell you what year and model.
This guide shows how to adjust the fuel/air ration of the carburetor as well as adjust valves.
Air/Fuel mixture adjustment
2 Cycle engine: The adjustment screw is on the side of the carburetor and is parallel to the ground. You can identify it by the lock nut at the base of the screw. Loosen this and turn the screw all the way into a soft seat, then back it out one and a half (1-1/2) turns.
It is easiest to remove the drive belt first, start engine, then backing out the fuel adjustment screw while the engine is running. Once the engine is running at it’s best, the lock screw is tightened down, shut off the engine, and replace the drive belt.
4 cycle engine: This has a plastic cap limiter on the top of the carburetor, and there is a minimal amount of adjustment needed or available with this model.
Step 4: Valve Adjustment
Check and adjust the valves every 250 hours or every year To keep the engine starting and running properly.
For the 295cc or a 350cc twin-cylinder OHC engine. 1991 – Present
NOTE: THIS PROCEDURE IS DONE WITH THE ENGINE COLD
Tools required: Ratchet with 6″ extension, 10mm socket, 10mm socket wrench, flat blade screwdriver, and a feeler gauge. Note: if the screw (C) has a square head instead of a flat blade slot, this takes a tool designed just for this purpose. You can, however, get around this by taking an old pair of pliers and grinding a V-shaped groove length-wise in the jaws (< >).
Remove the valve cover bolts in the pattern shown using a 10mm socket wrench and carefully pry off the cover, retaining the six spacer sleeves and the gasket. Set these aside and inspect the rocker arm assembly. Turn the engine by hand to point the cam lobe (D) down on the first rocker you are checking.
Remove the valve cover bolts in the pattern shown using a 10mm socket wrench and carefully pry off the cover, retaining the six spacer sleeves and the gasket. Set these aside and inspect the rocker arm assembly. Turn the engine by hand to point the cam lobe (D) down on the first rocker you are checking.
Remove the valve cover bolts in the pattern shown using a 10mm socket wrench and carefully pry off the cover, retaining the six spacer sleeves and the gasket. Set these aside and inspect the rocker arm assembly. Turn the engine by hand to point the cam lobe (D) down on the first rocker you are checking.
For the Kawasaki FJ400 401cc 4-cycle Single Cylinder 1996 – Present
NOTE: THIS PROCEDURE IS DONE WITH THE ENGINE COLD
Tools required: Ratchet with 6″ extension, 10mm socket, 3mm hex wrench, feeler gauge.
Remove the four bolts (B) and carefully pry the cover (A) off, ensuring the rubber gasket does not stick and tear against the engine head. Inspect the gasket and wipe clean before putting the cover back on after the adjustment.
There will be two rocker arms to check. Turn the engine crank pulley by hand until the compression stroke is at top dead center. Insert a .004 feeler gauge (E) as shown between the tappet (D) and the valve stem. There should be a slight drag when you slide the gauge back and forth, and if the clearance is too high, you need to adjust it in. If you cannot get the gauge to slide in, then you don’t have enough clearance.
To adjust this clearance, use the 3mm hex wrench to loosen the center locking screw (C) and turn the surrounding 14mm nut with the wrench to open or close the gap. When the clearance is such that the feeler gauge begins to drag between the rocker and the valve, use the 3mm hex wrench to lock it back down while holding the 14mm nut in place with the wrench. Tighten to a torque of about 5 ft/lbs. DO NOT OVERTIGHTEN!
Using your finger or a clean rag, wipe a thin film of oil along the gasket that is inset in the cover. Replace the rocker cover and secure it back into place with the four bolts.