PRODUCT DETAILS
Honda Valve Lash Adjustment Tools (07MAA-PR70110)
Maintain optimal engine performance with the Honda Valve Lash Adjustment Tools, part number 07MAA-PR70110 and 07MAA-PR70120. Designed for Honda and Acura 4-cylinder engines, these precision tools ensure accurate valve lash adjustments, helping your engine operate smoothly and efficiently. This set includes the essential tappet lock nut wrench and tappet adjuster, and the tools are available both individually or as a complete kit to suit your maintenance needs.
Manufactured to Honda’s exact specifications, these valve lash tools provide a precise fit on the tappet lock nuts and adjusters, reducing the risk of damage during service. Durable and easy to use, they are ideal for DIY enthusiasts and professional technicians looking to maintain proper valve clearance, improve engine efficiency, and extend the life of your Honda or Acura 4-cylinder engine.
How to Perform a Valve Lash Adjustment on Honda/Acura 4-Cylinders:
- Ensure the engine is slightly warm before beginning the adjustment to get accurate measurements.
- Remove the valve cover to access the rocker arms and tappets.
- Use the tappet lock nut wrench to loosen the lock nut on the tappet you intend to adjust.
- Insert the tappet adjuster into the tappet and turn to achieve the correct valve lash specification for your specific engine.
- Once the proper clearance is achieved, hold the adjuster in place and tighten the lock nut securely using the tappet lock nut wrench.
- Double-check all clearances and repeat for each cylinder as specified in the service manual.
- Reinstall the valve cover and start the engine to verify smooth operation.
Proper valve lash adjustment improves engine performance, reduces valve train noise, and helps prevent premature wear on critical components. Whether performing routine maintenance or fine-tuning your high-performance Honda or Acura 4-cylinder engine, the Honda Valve Lash Adjustment Tools 07MAA-PR70110 provide the precision and reliability you need.
Key Features:
- OEM Honda/Acura valve lash adjustment tools
- Includes tappet lock nut wrench and tappet adjuster
- Tools sold individually or as a complete kit
- Precision fit for accurate valve clearance adjustments
- Durable construction for long-lasting use
- Essential for Honda and Acura 4-cylinder engines
What the Job Involves
Valve lash adjustment is an intermediate-level maintenance procedure. You don't need specialized equipment beyond these tools and a feeler gauge set, but you do need your engine-specific clearance specs from the Honda or Acura service manual before you start.
Tools You'll Need
- 07MAA-PR70110 tappet adjuster driver (included)
- 07MAA-PR70120 tappet lock nut wrench (included)
- Feeler gauge set
- Socket set and ratchet for valve cover removal
- New valve cover gasket (recommended any time the cover comes off)
- Service manual for your specific Honda or Acura engine
Steps
- Warm the engine slightly, then shut it off and let it cool to the temperature your service manual specifies for adjustment. Don't do this on a fully cold or fully hot engine.
- Remove the valve cover. Have a new gasket ready so you're not hunting for one after the fact.
- Rotate the crankshaft to bring cylinder one to TDC on the compression stroke. Your service manual will tell you how to confirm this position.
- Check valve clearance on the applicable valves using your feeler gauge. Record what you find.
- If a valve is out of spec, insert the tappet adjuster driver and loosen the lock nut with the tappet lock nut wrench.
- Turn the adjuster driver to bring the clearance into spec, then hold it firmly in position while you torque the lock nut with the wrench. This two-tool hold is exactly why the OEM kit exists. If the adjuster rotates during lock nut torque, your clearance number is wrong.
- Re-check clearance after torquing. If it shifted, back off and repeat.
- Rotate to the next cylinder per your firing order sequence and repeat for every valve.
- Reinstall the valve cover with the new gasket. Start the engine and listen for any remaining ticking, which would indicate a valve still out of spec.
Time estimate varies depending on engine access and how many valves need adjustment, but plan for two to three hours if this is your first time through the procedure.
What This Tool Does
The Honda 07MAA-PR70110 valve adjustment tool kit gives you the two things you actually need to set valve lash correctly on Honda and Acura four-cylinder engines: a tappet lock nut wrench and a tappet adjuster driver. These are the OEM tools Honda engineers spec'd for this job. Using the right tools here matters because holding the adjuster position while torquing the lock nut is where most DIY valve jobs go wrong. A generic wrench and screwdriver combo lets the adjuster rotate as you tighten, and your clearance shifts. These tools work together to hold position and torque simultaneously.
What Procedure This Supports
Valve lash adjustment on Honda and Acura four-cylinder engines is a straightforward maintenance item, but it requires the engine to be at the correct temperature before you measure. You remove the valve cover, rotate the crank to bring each cylinder to TDC on the compression stroke, check clearance with a feeler gauge, then use the adjuster driver to dial in the correct spec while the lock nut wrench holds everything in place during final torque. This kit covers that entire process. Always confirm the correct intake and exhaust clearance specifications in the service manual for your specific engine, since they vary across Honda and Acura applications.
Part Numbers in This Kit
The complete kit includes two separate tools: part number 07MAA-PR70110 (tappet adjuster driver) and part number 07MAA-PR70120 (tappet lock nut wrench). Honda also sells these individually if you already own one piece and only need the other.
Fits
Honda and Acura four-cylinder engines that use mechanical valve adjustment with tappet-style adjusters. Check your service manual or confirm with your dealer that your specific engine uses this style of adjuster before ordering.
- (1) Tappet Adjuster Driver (07MAA-PR70110)
- (1) Tappet Lock Nut Wrench (07MAA-PR70120)
Both tools are included when you purchase the complete kit. Each tool is also available for individual purchase if you only need one piece.