Briggs & Stratton 276535, 271172, 270962, CE8069 manual Assemble Cylinder Head, Install Cylinder Head

mm) or more, replace the entire head. If plug gauge is not available, see Section 12 - Engine Specifications for the valve guide reject dimension.

3.If guides are replaced, or the original guides still meet specifications, use Finish Reamer #19066 and Reamer Guide #19191 to ensure proper sizing and to clean out the guides. Thoroughly clean all reaming debris from cylinder head.

4.Inspect valves for wear or damage. Replace if necessary.

NOTE: Valve faces can be resurfaced on a commercially available valve grinder. However, Briggs & Stratton does not recommend this practice because the quality of the resurfacing may be insufficient. Instead, valve replacement is recommended.

5.Oil the intake valve guide and intake valve stem, then insert valve into head.

6.Using Valve Lapping Tool #19258 and Lapping Compound #94150, lap valve and seat together to assure a good sealing surface. Remove valve, the repeat procedure for the exhaust valve.

67. Thoroughly clean both valves and cylinder head of all lapping compound residue.

Assemble Cylinder Head

1.Install new plastic push rod guides (A, Figure 23) into the cylinder head plate.

Figure 23

2.Using new plate gasket, install the cylinder head plate. Torque screws to values listed in Section 12 - Engine Specifications.

3.Lightly coat valve stems with Valve Guide Lubricant #93963. then insert valves into cylinder head. Do not get lubricant on valve face, valve seat, or exposed end of valve stem.

4.Oil inside diameter of new stem seal/ washer and install on intake valve stem. Slide seal down against head plate or cylinder head.

5.Support valve side of cylinder head on clean shop rags. Place valve springs and valve spring retainers over valve stems. Using thumbs, press against each retainer until it securely locks into groove in valve stem (A, Figure 24).

Figure 24

Install Cylinder Head

1.Coat threads of all cylinder head screws with Valve Guide Lubricant #93963.

2.Using a new head gasket, install cylinder head on cylinder and start screws by hand. Step-torque screws in sequence shown in Figures 25, 26, 27, and 28 until final torque value is achieved. Torque screws to value listed in Section 12 - Engine Specifications.

Figure 25

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