- Thread starter
- #21
The crankcase gasket may be bad.
Sent from my iPhone using IH8MUD
Sent from my iPhone using IH8MUD
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Remove the guide bar studs. You can use a pair of Vise Grips or double nut them and back them out. Remove the guide plate. Don't' loose the little black rubber block that is behind the guide plate and the slot/groove in the head of the adjuster screw. Pull the adjuster screw out of the channel it sits in. Clean the area and check for cracks.
It is not uncommon for a person to tighten down the side cover and not have the adjustment pin lined up with the adjuster pin hole in the guide bar. When the outer side cover is tightened down, this misaligned pin/hole will push the pin against the back of the channel and create a crack. The other side of that crack is the oil reservoir.
Just a thought.
Post up some pictures of where the oil is coming from and I may be able to diagnose it a little better.
Love this very informative thread, What size shoe the O ring on the pump drive shaft please, and could you let me know where I can get a service manual for the 041 AV many thanks Paul.Here is the oil pump.
The long skinny part is the drive piston.
The sequence is washer, spring, washer, spring on the drive piston.
Make sure the gear is not stripped.
View attachment 672746View attachment 672747View attachment 672748
Hi Dan,I'll find a micrometer and measure it.
Hi Paul did you ever figure which direction the bevel on end of shaft should be orientated? I'm having a problem getting the pump to fully seat and therefor cannot get the spring clip into the channel. Thanks in advance for any advice.Hi Dan,
The pump drive shaft has a bevel on the worm gear end do I slide the pump back in with the bevel facing a certain way?
Thanks for any help that you can give me,
Thanks for the quick reply. Any thoughts on why I cannot get the pump to fully seat? I'm probably 1/16" away from getting it fully seated, but that is preventing me from getting the snap ring (which retains the oil pump) into the slot.The Oil pump shaft spins. Doesn't matter which way it is pointing. The spring sets the tension.