Returns- Returns must be communicated by customers within 7 days of delivery and sent back within 30 days to receive a refund. No returns without authorization will be accepted. All returns must be accompanied by a copy of the receipt and a note. All items must be returned complete and in new condition. 

All returns are subjected to 20% processing and restocking charge after the product has been inspected. The shipping cost will not be refunded. 

Refunds will be made back to the same method of payment when ordering those parts. We will not refund a different method of payment. 

Non-returnable Items Include- Close Outs and Clearance Items, Special Orders, Custom Orders, Used Parts, and Cut to Length Items. (Other items may apply)

Shipping: All orders are shipped UPS Ground, UPS Surepost or USPS Priority when ordering online. Shipping charges are calculated based on weight, size, and quantity of boxes in addition to processing and handling including insurance. All shipping charges are the customer's responsibility (even if charges online are not the same as emailed or phone orders).

All standard shipping orders will be shipped within a day or two on weekdays. Orders placed on the weekend (Fri-Sun) will be shipped Monday or Tuesday or the first weekday after a holiday. Custom or Handbuilt Products may require more time to be built before shipping. For any reason, an order may be delayed or prevented you will be contacted through phone and/or email. 

Express/2nd Day/Next Day Shipments:  Express orders must be made by phone orders only! Orders placed after 12:00 p.m. CST. will be processed the Next Business Day. UPS will only guarantee next day shipment. If you choose 2nd-day shipments expecting it before the weekend, UPS does not guarantee its arrival 

Additional Fees: Double Check that the address you gave is correct. You may be charged additional fees to redirect your package to the correct address. 

PO Boxes: We can ship to PO Boxes using USPS. However, UPS will only accept shipments to a valid street address. They do not deliver to P.O. Boxes. 

International Shipping: International buyers are responsible for paying duties, taxes, and applicable customs brokerage fees separate from the merchandise cost. Buyers will generally pay these fees upon receipt of your shipment. Buyers may be charged additional fees once they receive the package. Read our international policy here. 

Paypal: All orders paid by a verified PayPal account will be shipped to the address on the Paypal account to comply with Paypal's policy. No Exceptions.

UPS Estimated Shipping Lead Times

USPS Estimated Shipping Lead Times 

1501 Rocker Arms Instructions

WARNING!

Due to the decades of mass production, updates, and revisions, Briggs & Stratton Cylinder Heads are inconsistent. A professional engine builder must install these rockers with machine shop capabilities to address variations. They cannot be installed with a lack of experience or negligence.

One notable example, most Briggs heads use metric thread, but they also made versions with standard or SAE threads. The Rockers are packaged with a rocker stand and M6 metric bolts. If you have the standard threads, you will need to purchase the correct hardware. 

There are also two additional holes in the rocker stand. They are for those that choose to modify the cylinder head for extra support. Again, a trained professional must drill, tap and install hardware for this. We do not include additional hardware.

Check Clearances and Installation

After installing rockers, you will need to check your pushrod length to sweep the rocker across the valve tip properly. 

Once you have the proper pushrods and rockers installed, you will need to check your valve spring clearance. Check for coil bind on the inner and outer valve spring. You need a minimum of .030" before the coil bind of either spring.

Next, you need to check your clearance between the bottom of the valve retainer to the top of the valve guide. You need a minimum of .050" clearance.

Next, you need to check your clearance between the retainer and the rocker arm. DO NOT FOR ANY REASON GRIND OR CUT ON THE ROCKER ARM.

Once you have done all your dry fitting of your valve train, make sure you use a high-quality assembly lube to lubricate the trunnion shaft, rocker arm bore, and roller tip. We recommend Maxima Racing Oil Assembly Lube or Grease for all of your engine building needs. 

After assembly or when your engine has sat for a few days, pour oil over the rockers. The rockers are the last part of the engine to get lubrication during start-up. Make sure they are entirely covered. You can't put too much oil on the rockers.

Disclaimer

These are still air-cooled lawnmower/power equipment engines not engineered beyond the manufacturer's recommended applications. As such, THERE ARE NO WARRANTIES OF ANY KIND ON THESE ROCKERS OR ANY ENGINE COMPONENT. That said, EC Carburetor nor Briggs & Stratton are responsible for damages to your machine or persons as a result of using these products.