What is the gap between the tip of the valve and the rocker?

Valve lash is the gap between the tip of the valve and the rocker arm when the lifter is positioned on the base circle of the camshaft.

What do you need to know about valve spring pocket clearance?

Valve spring pocket clearance is the gap between the inside diameter of the valve spring pocket (or cup, if used) and the outside diameter of the valve spring. Too much clearance will result in the spring ” dancing ” around in the head, which ” beats up ” the spring mounting surface and the spring itself.

How big does valve spring retainer need to be?

Valve Spring Retainer to Valve Seal Clearance. The distance between the innermost step on the valve spring retainer and the valve guide must be 0.090″ larger than the maximum valve lift of the camshaft. Measure the distance between the top of the valve seal to the bottom of the valve spring retainer.

What kind of Rockers should I use for spring pressures?

These give a slight advantage in horsepower that would otherwise be consumed in the valvetrain, and they extend the wear life of the valve stems. “The best choice for spring pressures up to 800 lbs. and more are stainless steel roller rockers.

Valve lash is the gap between the tip of the valve and the rocker arm when the lifter is positioned on the base circle of the camshaft.

What are the symptoms of a valve gap on a lawn mower?

As an engine wears, this valve lash (gap) gets larger and needs to be checked and adjusted. Symptoms include: Starter cord hard to pull. Hard starting. Lack of power. Rough running. Oil leaks. Noisy engine.

Do you need to replace the exhaust valve spring?

Replace either valve spring if it is bent. Note: The exhaust valve spring may use thicker wire than the intake valve spring. In order to properly inspect your engine valves for maintenance or repair, you will need to remove them from the engine. Find the type of engine valve retainer and follow our step-by-step guide below.

How do you adjust the air gap on a Honda gx160?

IGNITION COIL AIR GAP Adjustment is required only when the ignition coil or the flywheel has been removed. ①. Loosen the ignition coil bolts. ②. Insert a long feeler gauge of the proper thickness between the ignition coil and the flywheel. Both gaps should be adjusted simultaneously. ③.