1) After receiving your cylinder from CT, inspect it for any freight damage, if there are any questions contact CT immediately.

2) With dish soap and hot water wash your cylinder and piston only , scrub the cylinder bore with a paper towel until the towel remains clean. Dry the parts immediately and spray the cylinder bore with a liberal amount of WD-40, use a dry paper towel to spread the oil evenly throughout the cylinder.

3) CT recommend that you install new reeds and a new wrist pin bearing at this time, don’t leave anything to chance, if a part is possibly worn out then replace it now. If you have a Suzuki LT250 or 500 always change the wrist pin thrust washers, they have a history of breaking and can do major damage to your engine.

4) Put a couple of drops of 2 stroke oil on the wrist pin and pin bearing and install the piston. The arrow on the piston crown faces the exhaust port. If there is no arrow, the ring locating pins will face the intake port. Double check that the circlips are firmly seated in their grooves. Install the piston rings with the numbers up. The numbers are located at the ring end gap, be sure the ring end gaps are aligned with their respective anti-rotation pins.

5) Assemble the cylinder with new gaskets, do not use any type of gasket sealer. Do not put any more oil on the piston or cylinder, the WD-40 left in the bore is enough lubricant. Compress the rings with one hand as you slide the cylinder down onto the piston, look through the intake window to check the alignment of the ring end gaps over the pins, adjust the rings now with a small screwdriver as necessary. If the ring end gaps are not centered over the pins you may break the rings if you force the cylinder down, take your time. Torque the base nuts to the factory specs, install the head, torque the nuts to the factory specs.

6) Install the intake and exhaust systems with new gaskets, we suggest using orange high temp silicone on the exhaust flange. Install the water hoses and fill the cooling system with glycol based coolant mixed 50/50 with distilled water.

7) Install a NGK spark plug of the exact type recommended by the factory.

8) Install a new Dura-Blue air filter for maximum engine life.

9) Richen the jetting in the carburetor, up two sizes on the main jet and one clip position on the needle.

10) CT cylinder kits are set up for 100 octane race gas, fill your tank accordingly. A mixture of 50/50- 110 octane racing gas and 92 octane pump gas will generally be fine for all CT engine kits unless other arrangements were made.