Is your concrete cut-off saw lacking power, hard to start or perhaps seized up?
What you need to know before ordering a cylinder & piston assy. 
There are several things to inspect before ordering a cylinder and piston assembly. Trust me, I know. I deal with this situation on a daily basis. DHS Equipment is the leading source for Dolmar, Husqvarna, Makita, Speedicut, Stihl and Wacker cut-off saw piston and cylinder assemblies. Each day, we speak to contractors across the country who are overhauling their cut-off saw. Here is what we explain to our customers:
It's import to inspect your cylinder before placing an order for a cylinder and piston assembly. By first removing your cylinder, you can now better check the condition of your crankshaft bearings and connecting rod bearings where it attaches to the crankshaft. This is a very important and vital step if you want a quality rebuild when you're done. Most people, (even some repair shops), don't know to look any further than the cylinder and piston. Inspecting the crankshaft and connecting rod bearings ensures that your cylinder overhaul will continue to serve you with the greatest possible longevity and performance.
Inspecting your cut-off saw crankshaft bearings:
The simplest way to inspect your crankshaft bearings is as easy as holding your saw steady with one hand, and gripping the flywheel or clutch with your other hand. Try to move the flywheel or clutch horizontally, and then vertically. If you find the slightest amount of movement, (or "play"), this indicates that the crankshaft bearings are worn and it's time to replace them.
Inspecting your cut-off saw connecting rod bearings:
To inspect your connecting rod bearings, grip the crankshaft and hold it as still as you can. Grip the connecting rod with your opposite hand and try to move the connecting rod vertically, checking for movement, (or "play"). There will be some horizontal movement as this is typical.However, there should be no vertical movement. You're more likely to feel movement in the connecting rod, than to see it. It's important that you feel for movement and not just visually inspect the part. If you feel movement in the connecting rod, the crankshaft is worn and needs to be replaced.
In conclusion, installing a new cylinder and piston assembly when your cut-off saw has worn bearings or a worn crankshaft will only wear out the new cylinder kit at a very rapid rate, and your saw still may not run correctly. Take the time to inspect all of the engine compenents within your saw before ordering parts. You will save time and money by not having to place a second order.
If you need assistance with ordering the correct parts for your cut-off saw, call DHS Equipment toll free at 866-611-9369.
Author: David Schatz
David Schatz is the founder of DHS Equipment and a technical content expert in light construction equipment, small engines, and professional-grade replacement parts. With more than 30 years of hands-on experience servicing concrete saws, generators, water pumps, and plate compactors, he helps contractors, rental fleets, and serious DIY users keep their equipment running safely and efficiently.
Through practical, no-nonsense articles, step-by-step guides, and maintenance tips, David focuses on real-world troubleshooting, small engine repair, and clear recommendations on OEM and high-quality aftermarket replacement components that reduce downtime, extend equipment life, and improve job site productivity.