does anyone know how to change a drive sprocket on a husquavarna chainsaw.?
i have a husquvarna chainsaw that needs a new drive sprocket ( no this is not the sprocket in the bar). does anyone now how to change this.
an informational website or video would really help.
THKS all.
the threads on the clutch has left hand threads to LOOSEN turn CLOCKWISE to tighten turn counterclockwise some models have a nut that holds the assembly together(reverse threads too) but on most the center of the clutch is threaded. an easy way to hold the crankshaft from turning is to take a lenght of 1/2 in soft nylon rope(double braid) say 10 inches long burn the ends so it doesnt fray but do not make a large hard end! just enough to seal it. feed this rope thru the spark plug hole and fill the cyl space above the piston(try to have piston on down stroke) now when you turn the clutch the piston will compress the rope against the top of the cyl assy. holding the crankshaft in place. many small engine/chainsaw manufactures recommend this procedure as it is safe. of course if it is frozen or stuck use proper caution. you can remove the rewind and hold the flywheel using a strap wrench(do NOT use a bar or screwdriver, etc to hold the cooling fins they WILL BREAK). Be careful even when using the strap wrench as on some models you can damage starter components. most saw manufacturers have a special holding fixtue, or a flywheel puller you can also use to hold the crankshaft from moving. I try the rope method first and unless you have a uncommonly stubborn clutch that method works great. as far as turning the clutch(if not nut style or flats on clutch for wrench) try a strapwrench here also. if you have access to a surface near the center of the clutch try using a punch or flat piece of metal stock, and use a hammer to give it a sharp blow (clockwise). this will usually break the clutch free in 1-3 hits. use caution so you dont damage clutch and do not pound on the outside weak part of clutch. you can also remove outer springs/shoes to access a safe place to tap on or place a wrench.again most saw manufactures have a 'CLUTCH ' wrench. If clutch is bad and your replacing doesnt matter. since you have clutch/sprocket/rim off saw inspect seal and thrust washer/bearings if any, replace if they look bad. always replace the sprocket/rim bearing(one that allows sprocket and rim to move freely) they are cheap and cause problems if they fail. use the above methods to tighten the clutch/nut when done. pay attention to any spacer(s) or washers. many replacement sprocket/rim/clutch assy.'s have a different look and use different parts pay attention to instructions with kit as assembly order,# of parts may be different. also make sure that the sprocket pitch is the same as old one. husqvarna has used different pitches on the same model saw(your old chain/bar may not be compatible) make sure you grease the sprocket/rim bearing regardless if new or your original. you do NOT have to crank the clutch(nut) on super tight as the reverse threads will actually try to tighten it when running. use approximately (little more)the same torque as you would for the bar retaining nuts.if your are worried give it a few taps to tighten just as you did when loosening. I have always used the low strenght lock tite, but it is not neccessary. Inspect your old chain as it may have sharp edges from running against the old sprocket(worn drive teeth) and can cause premature sprocket failure good luck hope this helps remember the THREADS ARE LEFT HANDED OR REVERSE FROM STANDARD
 |
US $6.99
Husqvarna 268 xp chainsaw cutting 10" black ash
If you understand what each of the various Homlite chainsaw parts do then you will better understand how to operate it. Also by knowing the way this parts work will also help with you taking better care of your chainsaw.
A well maintained chainsaw is not only going to last considerably longer but will also be a much safer piece of equipment to use. Below we take a look at some of the parts that you may need to replace on your chainsaw because of the amount of stress that they are being placed under.
1. Flywheel - This part is what not only helps to control the speed at which the engine is running but to help it remain cool. This part needs to be cleaned regularly to ensure that dust or debris cannot build up on it and which can lead to it becoming damaged.
2. Clutch - This is what controls the driving part of the saw and is connected to the chain sprocket and so is going to be a part that is going to be affected by dirt and dust. Again like the flywheel following each use you need to make sure that it is clean of such contaminants. If not this could lead to this part seizing.
3. Throttle and Throttle Interlock - Both of these are important parts of the chainsaw and which ensure that the saw will run at its optimum levels. If not cared for properly then the amount of fuel being allowed to get through to the motor to run the blade will be sorely affected. So if you can following every 10 hours use check that the throttle is still tight and retighten if you need to.
Want To Know More
Click here for more Information Homlite Chainsaw Parts
