Stihl 028 av super electronic quickstop manual

Back home Yes, Harley, the pin was present and tight, no slop. Note: when I am holding the assembled pump in my hand out of the saw , rotating the worm gear sprocket indeed turns the piston as it should. So now I don't want to impede smooth rotation of the piston, but I believe this plug should actually plug the hole. Aug 4, I'm on the way. Tree Freak. I doubt that little plug is your problem, some of them just have a piece of foam in there to keep out the dirt. Take the oil cap off and drain the oil and look in there with a flashlight and you'll see how the oil gets to the pump, should be an oil line and filter in there.

Most of the problems I've had with the are the gears being worn out and not making good contact with each other.. Wood Doctor Edwin. Oh, and before you do anything, run the saw with the bar removed and the clutch cover off. Check to see if bar oil is making it through the oiler slot and dripping along the side. Aug 7, I think she's fixed. First, I had to understand how the pump works. And thanks to the generosity of 'atpchas', I have the service manual now.

I captured an image from the manual which is here the text box and arrows were added by me : The description of operation in the manual reads in part: "The oil pump is driven by the clutch drum via two spur gears The driven spur gear is mounted on the shaft of the single thread worm in the pump housing and drives the pump plunger at an overall reduction ratio of The suction and delivery action of the pump plunger is effected in that it performs a vertical stroke during each revolution.

This vertical stroke is brought about by a cylindrical roller in the pump housing which engages on a helical edge on the end of the pump plunger. When the plunger rotates it performs a continuous vertical stroke with a travel equal to the pitch of the helical edge. This causes oil to be drawn into the pump housing. An oil pocket at the top of the plunger collects the oil at the intake port and transfers it to the outlet port on its upward stroke, thus compressing the oil and forcing it through the outlet port and pipe to the cutting attachment.

Don't tell anyone, Allen, but I have four of these saws in my arsenal and they all run. I'll take them any day over an MS clam shell. All my s have turned into s Aug 10, Oh baby!

I've been using the heck out of this wonderful saw the past few days. I am very happy with the repair results. Plenty of oil making its way to the chain now. I had already sharpened the chain and tuned the jets, so she's been just great. My only complaint? Some amount of oil leaks down, either in front or behind the inner side plate.

The plate isn't damaged or dented, so I'm not sure whether this is SOP. I took time to write up the repair in hopes this helps someone else in the future. I took a few pix as I proceeded, but didn't include any with my description. Your email address will not be published. Skip to navigation Skip to content. Hidden label. Contact Us. Stihl Parts List Manual quantity. Stihl Parts List Diagrams.

Reviews There are no reviews yet. It is, there- on assembly stand Our special tool manual illustrates and lists the part numbers of all available machine-related tools as well as general purpose tools for all machines. The special tool manual is available in various languages and can be ordered by quoting the appropriate part number listed hereunder. Engine 15 Construction 15 15 Troubleshooting chart Exposing the cylinder 16 Disassembly of cylinder and piston 16 Assembly of piston 17 and cylinder Disassembly of crankcase - removal of crankshaft 19 Installing the Crankshaft - assembly of crankcase21 Leakage testing 23 the crankcase Pressure test 23 Vacuum test 25 Replacing the oil seals Ignition System 26 Construction 26 Operation 26 General information 26 Breaker-controlled magneto ignition 27 Checking on breakercontrolled ignition Adjustment on breakercontrolled ignition Checking on electronic ignition Magneto edge gap.

Rewind Starter Construction and operation Troubleshooting chart Disassembly Replacing the starter rope Replacing the rewind spring Tensioning the rewind spring Replacing starter rope guide bush Routine maintenance.

STIHL single cylinder, two-stroke engine with special impregnated cylinder bore 47 cm3 2. Crankpin: Needle cage Big-end bearing: Piston pin: Needle cage Small-end bearing: Pawl engagement with automatic Rewind starter: starter rope rewind mechanism 3.

All-position diaphragm carburetor with integral fuel pump Open approx. Breaker-controlled magneto ignition system Thyristor-controlled breakerless magneto ignition system 0,, Both types with corrosion resistant finish and induction hardened track Duromatic 40 and 45 cm 16 and 18 in Rollomatic 32, 37, 40 and 45 cm 13, The centrifugal clutch has three clutch shoes without linings.

The clutch drum and chain sprocket are separate components. The spur gear which drives the oil pump is a ring-gear, positively mounted to the hub of the clutch drum. The chain sprocket has two integrally cast lugs which engage in corresponding recesses on the drum hub.