Big fan of the Honda 90's so any break down and repair is appreciated. Much to learn and unless you're in a shop with an "Ol' Timer" this is the next best way to pick up and share knowledge. Thanks for the vid!
Original Honda screws are not Philips Head… they are JIS (Japanese Industrial Standard). JIS screw drivers and bits are available and do not “cam out” as Philips Screw drivers were designed to do.
I just started working on a 1977 ATC90 engine. I took the left side cover off and it looked like someone JB welded the top void (narrow one that opens into the countershaft area) visible at 22:08 in your vid. I'm guessing they did this because they had a chain break and crunch the case, so they repaired it with JB. Do you know what that void is, or if filling it in will hurt anything? Thanks sir
If you take a careful look at the gasket holes and outer cover passages compared to the case passages, you’ll see the one you refer to is an additional crankcase vent passage. The main one leads down to the hole in the outer cover’s bottom edge, just behind the shift shaft. If you think about it, over time, the passage leading to the sprocket cavity will become “caked up” with dirt and grime, so yours blocked off doesn’t seem like such a bad idea.
@@middlesiderrider Your welcome… I’ve got a 1974 Trail 90 (CT90) apart and am thinking I’m going to seal up that passage leading to the sprocket cavity. That’s how I was able to reply to your concern. I’m also concerned about the potential for grit to find it’s way into the crankcase from the drive sprocket flinging debris into that passage way. On Trail 90s, the stator cavity is not sealed from the crankcase and therefore there is oil that needs to be contained by the left side cover. On the one I’ve got apart, there is trace amounts of grit laying in the very bottom of the stator cavity. I suspect it may have entered thru that vent passage leading to the sprocket cavity and so plan to eliminate that as a potential source of grit by sealing it closed like yours.
I'm not sure what the "pol-rad" is. Are you referring to the rotor? The ATC 90 and 1979-80 atc110 use the same one piece puller. The 1981 and up and other engines use the two piece puller. I don't have the diameter and thread handy. But you should be able to find it.
Big fan of the Honda 90's so any break down and repair is appreciated. Much to learn and unless you're in a shop with an "Ol' Timer" this is the next best way to pick up and share knowledge.
Thanks for the vid!
Original Honda screws are not Philips Head… they are JIS (Japanese Industrial Standard).
JIS screw drivers and bits are available and do not “cam out” as Philips Screw drivers were designed to do.
I just started working on a 1977 ATC90 engine. I took the left side cover off and it looked like someone JB welded the top void (narrow one that opens into the countershaft area) visible at 22:08 in your vid. I'm guessing they did this because they had a chain break and crunch the case, so they repaired it with JB. Do you know what that void is, or if filling it in will hurt anything? Thanks sir
If you take a careful look at the gasket holes and outer cover passages compared to the case passages, you’ll see the one you refer to is an additional crankcase vent passage. The main one leads down to the hole in the outer cover’s bottom edge, just behind the shift shaft.
If you think about it, over time, the passage leading to the sprocket cavity will become “caked up” with dirt and grime, so yours blocked off doesn’t seem like such a bad idea.
@@donsoule6411 thank you for the reply and information sir.
@@middlesiderrider Your welcome… I’ve got a 1974 Trail 90 (CT90) apart and am thinking I’m going to seal up that passage leading to the sprocket cavity. That’s how I was able to reply to your concern. I’m also concerned about the potential for grit to find it’s way into the crankcase from the drive sprocket flinging debris into that passage way. On Trail 90s, the stator cavity is not sealed from the crankcase and therefore there is oil that needs to be contained by the left side cover. On the one I’ve got apart, there is trace amounts of grit laying in the very bottom of the stator cavity. I suspect it may have entered thru that vent passage leading to the sprocket cavity and so plan to eliminate that as a potential source of grit by sealing it closed like yours.
i am working on a honda atc90 and i am wondering where you got the tool to take that nut out at 30:46 thanks in advance
I got it on ebay. Amazon probably has them too. If I remember correctly, it was under $10.
what is it called when
Hello, I'd like to know the diameter and thread from the pol-rad puller/ bolt because the Honda standard tool doesn't work.
Thanks in advance.
I'm not sure what the "pol-rad" is. Are you referring to the rotor? The ATC 90 and 1979-80 atc110 use the same one piece puller. The 1981 and up and other engines use the two piece puller. I don't have the diameter and thread handy. But you should be able to find it.
Thank you for answering. Yes I'm referring to the rotor.
use a rubber mallet, thats shocking using a metal hammer