What is the valve clearance?

What are valve clearances? Valve clearances on motorcycle and car engines effectively relate to the gap between the top of the valve stem and the cam that operates it. The inlet valves in the engine open to allow air and fuel into the cylinder, while the exhaust valves let the burnt gases out.

What is the valve clearance on a Briggs & Stratton?

Step 3: Check the valve clearance by placing a feeler gauge between the valve head and the rocker arm. Clearances differ for the two valves and typically range from . 002 – . 004″ to .

What is the valve clearance on a 17 HP Briggs and Stratton?

.007 inches
The clearance on the exhaust valve should be . 005-. 007 inches. If adjustment is required, loosen the allen set screw in the center of the nut on the rocker arm and adjust the nut to obtain the proper clearance.

How do you adjust valve clearance?

To adjust the valve clearances, use a spanner or a socket wrench on the crankshaft-pulley bolt. Turn the engine in its normal direction of rotation until No. 1 piston is at the top dead centre ( TDC ) of the compression stroke .

How do you adjust the valves on a Briggs and Stratton 21 horsepower engine?

How to Adjust Overhead Valves

1. Step 1: Release the brake spring.
2. Step 2: Insert a narrow screwdriver into the spark plug hole and touch the piston.
3. Step 3: Check the valve clearance by placing a feeler gauge between the valve head and the rocker arm.
4. Step 4: Adjust the clearances as required by turning the rocker screw.

How big is the intake valve on a Honda K24A?

The periodic valve clearances adjustment is needed. The base K24A1 version was produced from 2001 to 2006. It was a start line for the all K24 engine series. This power unite had the i-VTEC on the intake camshaft only. The intake valve diameter is 35 mm, exhaust valve – 30 mm; valve stem diameter is 5.5 mm.

When did the Honda K24A engine come out?

The chain-driven intake and exhaust camshafts open and close valves via roller rocker arms without hydraulic tappets. The periodic valve clearances adjustment is needed. The base K24A1 version was produced from 2001 to 2006. It was a start line for the all K24 engine series. This power unite had the i-VTEC on the intake camshaft only.

What kind of compression ratio does a Honda K24A have?

The compression ratio is 9.7:1. The engine also has a 16-valve DOHC i-VTEC head. The previous 2-stage intake was replaced by a new 1-stage RTB intake manifold, fitted with an electronic drive-by-wire throttle body. The exhaust system has a high-density catalytic converter that helps the engine meet emission standards.

How do you adjust the valve on a Briggs OHV?

The procedure for adjusting valves on Briggs OHV motors is basically the same for all models. Valve lash, or the space between the valve and rocker arm, differ slightly from engine to engine, so check the specs on yours. Valve clearance specs can be found in an owners manual or shop manual.