Summary: This blog post provides guidance on adjusting the engine’s revolutions per minute (RPM) to optimize performance. It explains how to fix and maintain proper RPM levels to ensure efficient insulation removal. This article and video shows how to make these adjustments for optimal operation.
Sometimes, not often, you may find it difficult to maintain the RPMs on your insulation vacuum engine. Gas engines have throttle cables that push and pull the throttle valve. There is a small screw/clamp that keeps the cable sheathing in place. These screws, due to vibration, can come loose and you will find that your throttling of the engine is not responsive or does not allow you to achieve maximum RPM. The fix is very simple and will take you about as much time to fix as it did for you to read this paragraph.
Tools You Need for This Fix
- Honda Engine: 8mm deep socket wrench
- Briggs/Stratton Engine: Flat head screwdriver
- Optional tool: If the cable has a black vinyl sheathing, then you will need a utility knife to cut that away.
Adjust the Cable Tension
- Locate the clamp and end of cable: Find the clamp, which will be a small screw and clamping plate.
- Move Throttle: Put throttle in the fast position.
- Loosen the locknut: Use a screwdiver or 8mm socket wrench to loosen the clamp on the adjuster.
- Tighten the cable: Pull the cable sheathing to reduce slack in the pull cable. The end of the cable sheathing should be in the clamp.
- Run the vacuum. Throttle up the vacuum to see if you can achieve the proper RPM (which usually is 3,600 RPM for most CoolVac vacuums).
- Adjust the throttle screw if necessary:
- Turn clockwise to lower the RPMs.
- Turn counterclockwise to decrease the RPMs..
