Chainsaw

Chainsaws are generally reasonably easy to troubleshoot and repair. Most chainsaws use two stroke engines due to their simplicity, light weight and high power. Common problems with chainsaws are generally fuel related. Either a leak in the fuel supply hose or a clog in the fuel tank filter can cause a fuel supply problem. Chainsaws are usually stored with gas left in them. The diaphragm carburetors will have problems with the supply fuel needle sticking, diaphragms drying out or tearing and build up of old varnished gas, filling up the low and high speed fuel jets. The jets can usually be cleaned by using a small strand of wire and carefully passing it through the hole. The jets are soft metal so don’t force something hard through them such as a drill bit or you will damage them. Primer bulbs may also collapse, they will need to be replaced same as dried out gaskets or damaged diaphragms. Compression on a chainsaw should be around 120 psi. Many chainsaws call for large amounts of oil to be mixed with the gasoline. Such ratios ensure that the piston is not damaged due to the severe beatings that chainsaws will endure. The extra oil also helps to keep the piston lubricated when the chainsaw runs out of fuel.