* Clean and remove all preserve and immerse lifters in WD-40 or other cleanser. Then soak lifters in engine oil for 30 minutes. .

* Remove all burrs on engine block bore ensure the lifters are freely rotated in bore by hand. Excessive clearance or over tight can cause damage to cam.

* Apply engine oil on lifter crown and push rod seats before installation.

* Always use new push rods and ensure the end ball diameter is 5/16" or less. Over sized end ball will damage to the lifters. New push rod should be 0.030" longer for pre-load purpose.

* Make sure to pre-load lifter from 0.02-0.04" range. Excessive pre-load will cause rough idle and low vacuum. Insufficient pre-load will generate valve train noise.

* Make sure the push rod is properly seated on lifter during installation process. Take one by one steps.

* Install one push rod at a time and make sure push rod has no obstruction from guide plate and cylinder head.

* Make sure a proper valve lash has been adjusted according to cam specification.

* Hand crank engine to ensure lifters are properly operating and crown center is contacting with cam lobe.

* Apply plenty of cam lube on lobes, distributor gear, and fuel pump for engine break-in.

TECH SUPPORT
CAT POWER ENGINE PARTS, INC.