Found the article here: Last edited by keystart; 06-21-12 at 04:06 PM. Intek™ V-Twin OHV: Intake push rods are aluminum. Install a new cylinder head gasket on the cylinder, insert the bolts in the cylinder and position the cylinder head on the cylinder.
If there are no signs of damage or valves wearing out after inspection, you can tune up the valves and seats so that the valves seal effectively (also known as "lapping the valves"). Step 7: Install the push rods through the push rod guides and into the tappets. Step 2: Insert a narrow screwdriver into the spark plug hole and touch the piston. Ratings and Reviews. Step 4: Remove the rocker arm bolts with a socket wrench or nut driver. Briggs & Stratton 262848 Compression Release Spring - Farm Parts Store. The valve guide may also be worn, but these are only servicable in some of our L-Head engines. The Intek does not require the use of a valve spring compressor, making valve removal and installation simple. Consult your Operator's Manual for final torque specifications. Then, remove the valve cover, breather valve assembly (if equipped) and any gaskets. Model Series 28N700, 28Q700, 28U700, 28W700, 287707, 310700, 312700, 313700 exhaust push rod has a red band of paint for identification and is steel. Tighten the jaws to compress the spring. Then, turn the flywheel to close both valves. Step 2: Slip the upper jaw of the valve spring compressor over the top of the valve chamber and the lower jaw between the spring and retainer.
Step 1: Remove the spark plug and secure spark plug lead away from the spark plug. Step 7: Remove the push rod guide bolts and push rod guide. Use the pliers to remove the retainer from the valve chamber. Step 2: Place the push rod guide on the cylinder head and attach the mounting bolts, using a torque wrench. In order to reach your engine valves, you will need to reach the valve chamber. Refer to Repair Manuals for valve clearances for older engine models. Step 5: Coat the threads of the cylinder head bolts with valve guide lubricant. Repeat this step for the other valve. Step 1: Check the valve face for an irregular seating pattern. Judging by the fact that it has been stated there is a different air filter and exhaust installed, one could assume it is being raced, and not mowing lawn. Note: Consult your Authorized Briggs & Stratton Dealer for the proper torque settings for the mounting bolts and studs. Briggs and stratton compression release parts http. Follow the steps below to check for the most likely sources of engine valve problems. Then, repeat the procedure for the other valve.
Step 2: After removing the spark plug and securing the spark plug lead away from the spark plug, adjust the jaws of the valve spring compressor (part number 19063) until they touch the top and bottom of the valve chamber. Questions related to this product. Then, turn the crankshaft past top dead center until the piston is 1/4" down from the top of the cylinder. Step 5: Check that both valve springs are straight. NOTE: Always wear safety eyewear when removing and installing valves. Type of Push Rod Based on Engine: - Single Cylinder OHV: Model Series 260700, 261700 upper push rod (exhaust) is hollow. If necessary, loosen the cylinder head by striking it with a nylon-faced hammer. Briggs and stratton compression release parts www. It there are stubborn deposits, clean the valve with a wire brush and solvent, soaking the parts for several hours if necessary, to loosen hardened grit. Step 3: Check the valve clearance by placing a feeler gauge between the valve head and the rocker arm. Step 2: Remove the muffler, crankcase breather and any other components that block access to the valve chamber. Step 1: Valves with keyhole retainers do not require an additional retainer. Remove bolts from other engine components to reach the valve chamber. There are no reviews yet.
Step 4: Once the individual valve parts have been thoroughly cleaned, lubricate the valve stems and guides, using valve guide lubricant. Lap the valve just enough to create a consistent and even pattern around the valve face. Step 1: Place the valve spring into the valve spring compressor and rotate the tool's handle until the spring is fully compressed. Use both thumbs to compress the spring until the valve stem extends through the large end of the keyhole slot.
When you adjusted the valves, Did you position the piston 1/4" down past top dead center compression stroke? Step 6: Tighten the cylinder head bolts in increments, using a torque wrench. Vanguard™ V-Twin: All models (except 540000, 610000) exhaust valve push rods are aluminum. If automotive-type retainers are used, place the retainers in the valve stem groove. Step 3: Lubricate the inside diameter of each valve stem seal (if equipped) with engine oil and install the seals on the valve stems. Label the bolts if necessary, to ensure proper installation later, since they may be of different lengths. Step 4: Install a valve spring and retainer over each stem. Step 5: Install the valve cover, using new gaskets, as required, and make sure the cover is secure.
Add review for this product. Step 3: Clean the surface frequently and check your progress. Valves With Pins Or Automotive-Type Retainers. Remember that the retainer's key-shaped slot will help you slip the retainer off the valve stem, even when the retainer is hidden from your view by the valve spring compressor. Step 5: Lower the spring until the retainer fits around the pin or automotive-type retainer. Then, pull out the valve spring compressor. Since lapping valves removes a small amount of material from the surfaces of the valve face and valve seat, you may need to adjust the tappet clearances - the spacing between the valve stem and the tappet - after lapping and reinstalling the valves. Step 8: Remove the cylinder head bolts and remove the cylinder head by rocking it with your hands. There are literally hundreds of Briggs singles being raced across the country that have increased compression, reground cams and the like, all with no release, that are able to start...
Quick Links: Before trying to repair your valves, look them over carefully. Step 4: Insert the valve stem through the large slot in the retainer. Note: This procedure must be performed for each cylinder on V-Twin engines. You can smooth out minor scoring and pitting of the valve face and seat to restore a valve's ability to seal the combustion chamber by lapping the valves. While lapping valves, make sure to check your progress often because it's easy to remove the carbon building as well as the metal, further damaging the valve or seat. Note: The exhaust valve spring may use thicker wire than the intake valve spring. Step 2: Brush the valve stem with valve stem lubricant.