•Universal application for on-car operation.
•Easy to compress valve spring on straight and V-shape engines.
•Special design helps compress valve spring regardless of firewall barrier.
•Provided with camshaft plates, holding camshaft without needing to adjust valve timing. Can connect to shop air, which can keep cylinder head pressurized, thus valves will not fall into cylinder head.
•Tool body mounted onto a sliding rail can compress valve springs one by one, fast and smooth. Patented on push road compressor arm.
•Instruction:---
•Step 1: Install the parts onto the cylinder head. The instruction manual provided shows the steps for installation in detail. The finished installation should be as teh image on the right.
•Step 2: Choose a suitable-sized valve spring adapter and connect the adapter securely onto the tool’s rocker arm.
•Step 3: Before compressing the valve spring, connect shop air to the air connector with  spark plug adapter. This can keep cylinder head pressurized, preventing valve falling into the cylinder head.
•Step 4: Use a 3/8” drive ratchet wrench to turn clockwise for compressing valve spring.
•Step 5: If need to compress other valve springs, simply move the rocker arm on the sliding rail to the suiable location.

•Universal application for on-car operation.
•Easy to compress valve spring on straight and V-shape engines.
•Special design helps compress valve spring regardless of firewall barrier.
•Provided with camshaft plates, holding camshaft without needing to adjust valve timing. Can connect to shop air, which can keep cylinder head pressurized, thus valves will not fall into cylinder head.
•Tool body mounted onto a sliding rail can compress valve springs one by one, fast and smooth. Patented on push road compressor arm.
•    Instruction:---    
•Step 1: Install the parts onto the cylinder head. The instruction manual provided shows the steps for installation in detail. The finished installation should be as teh image on the right.
•Step 2: Choose a suitable-sized valve spring adapter and connect the adapter securely onto the tool’s rocker arm.
•Step 3: Before compressing the valve spring, connect shop air to the air connector with spark plug adapter. This can keep cylinder head pressurized, preventing valve falling into the cylinder head.
•Step 4: Use a 3/8” drive ratchet wrench to turn clockwise for compressing valve spring.
•Step 5: If need to compress other valve springs, simply move the rocker arm on the sliding rail to the suiable location.