In 20 plus years of running saws for a living I don’t think I have lubed a clutch drum bearing more than 10 times and have never lost a crank, drum, or bearing. The problem with oiling the drum bearing is that oil and dust turn into valve grinding compound. Keep an eye on them though because a bad bearing can cause the drum to run off center.
So I greased the bearings on all three saws yesterday, and I seriously can’t believe that I believed my mechanic…I was noodling when the bearing failed, so the assumption was that the noodles were absorbing all the oil and that caused the failure. So I had been making sure to keep it unclogged when noodling this summer and thought I learned a lesson.
The most overlooked place that has to be greased on a Chainsaw is in a place that most people overlook mainly because they don’t know about it and where it’s at. The inner needle bearing that is on end of crank shaft that is part of the clutch assembly. To access it you have to take the clutch cover off just like you would if were going to change bar and chain, now look at the end of crank and to will see a hole, that hole is there so you can pump some grease in it so your needle bearing can be greased, you use the same grease on it that you use on the end of your bar tip, using same applicator.
how to grease chainsaw clutch Related Question:
How is a chainsaw crank lubricated?
A chainsaw engine uses gasoline and air-cooled engine oil to cool the engine. Oil-rich fuel will also lubricate the crankshaft and the piston when the gas reaches the cylinder, allowing the engine to continue running at high speeds while the oil-rich fuel lubricates the crankshaft and the piston.
Do Needle Bearings need grease?
Needle bearings are usually lubricated with grease, but oil or oil-mist lubrication is preferred for heavy-duty or high-speed applications. Many light-duty bearings never require relubrication, but high loads or speeds demand it.
Do you need to grease Stihl chainsaw bar?
The Guide Bar Grease Gun is designed for lubricating the sprocket nose bearings on guide bars that have the grease hole. Current STIHL guide bars offer maintenance free sprocket noses, some competitor’s guide bars still require additional grease.
Why is my chainsaw squealing?
Make sure you remove the clutch as running the saw with just the drum removed will take out the brake band. It is most likely the needle bearing if it squeals at idle but if it does it when revving then the clutch will be meshed to the clutch so must be the crank bearings!
How do I know if my Stihl clutch is bad?
Does the engine loose revs, or the engine keep revving and just the chain stops? If the engine is still running at normal revs, and the chain slows down, then it’s a problem with the clutch. Worn out, gummed up, jammed springs etc. If the engine looses revs under load then it’s more likely a fuel or carb problem.
What is a chainsaw sprocket?
What is the drive sprocket? The drive sprocket and the clutch drum are connected to the saw motor. The sprocket is designed to drive the proper-pitched chain around the guide bar.
How does a 2 stroke crankshaft get lubricated?
How Does A 2 Stroke Crankshaft Get Lubricated? While an engine two-stroke has the cylinder filled with air or fuel, the crankcase is filled with liquid. This allows thick oil to evaporate quickly. Your method is to mix oil into gas to lubricate the crankshaft, connecting rod, and cylinders.
How does a 2 stroke lubricate the crankshaft?
In a two-stroke engine, air is pulled down into the crankcase and pressurises. The bottom end of the engine is only lubricated by the circulation of air /fuel mixture through the crankcase. Oil is coated with a light coating by this product.
What lubes the crank in a 2 stroke?
In a two-stroke engine, on the other hand, the crankcase is serving as a pressurization chamber to force air/fuel into the cylinder, so it can’t hold a thick oil. Instead, you mix oil in with the gas to lubricate the crankshaft, connecting rod and cylinder walls.
Is Moly grease good for needle bearings?
Greases containing molybdenum disulfide shouldn’t be used in applications that see excessive amounts of water ingress as the molybdenum disulfide can have a corrosive effect of the metal surfaces, and is not suited for bearings and other components that move at a rapid pace.
What is an advantage of needle roller bearings?
A main advantage of needle roller bearings is their ability to use mating surfaces as inner or outer raceways, or both. Bearing load ratings typically are based on raceway hardness of 58 Rc or equivalent. If it is lower, the capacity of the bearing-raceway combination is reduced.
Do Oregon bars need grease?
Most Oregon and Husqvarna bars (photo above) traditionally come with a greasing hole. Most STIHL bars do not. However, STIHL bars are built with thin shims on either side of the bearing/sprocket assembly to help keep debris out.
Does STIHL make guns?
So Stihl are making pump action shotguns now …
How can you tell if a centrifugal clutch is bad?
When heat damage occurs, the clutch will never disengage and the machine will start taking off by itself as soon as you start the engine. You can see heat damage inside the clutch drum, the metal turns from black to a blue color. The clutch must be replaced if it has heat damage and won’t disengage.
Why is my chainsaw clutch slipping?
Clutch Wear Eventually, the lining becomes too thin to do its job, and the clutch begins to slip. This happens for two reasons. One is that the lining becomes so thin that the shoes don’t make complete contact with the drum, and the other is that the surfaces of the shoes become slippery.